By Tom Clifford | Without Limits
Let’s start with something you probably didn’t expect to read on a coaching website: I used AI to help write this blog post.
I know. Stay with me.
Because here’s the thing, AI is genuinely useful. It can research, organize, draft, and produce content faster than any human. I’m not here to tell you technology is bad. I coach athletes for a living. I know that tools matter.
But there’s a difference between a tool and a coach. And right now, a lot of runners and triathletes are confusing the two, and paying for it on race day.
The App Told Me to Run 8 Miles. So I Did.
Your AI training plan doesn’t know that your left knee has been talking to you for three weeks. It doesn’t know you had a terrible night’s sleep because your kid was sick. It doesn’t know the humidity hit 90% this morning and your “easy 8 miles” just became a survival march.
It just said 8 miles. So you ran 8 miles. And now your knee is angry.
I’ve been running for 32 years. I’ve seen this pattern hundreds of times. The athlete who follows the plan perfectly, and breaks down because the plan didn’t know them.
An algorithm can build a plan. It cannot read your face when you show up to group training at 5:30am looking like you haven’t slept in three days. I can. And I will absolutely modify your morning around that, because I know the difference between an athlete who needs to be pushed and an athlete who needs to be managed.
That’s not something a language model learns from your heart rate data.
What 32 Years in the Sport Gives You
I ran my first race in 1993. I’ve trained through heat, snow, woke up at 5am in 2 degree temps, hurricanes, injuries, bad seasons, great seasons, and one memorable 50K.
In those 32 years, I’ve learned things that don’t exist in any database. I know what a runner looks like when they’re about to hit a wall three miles before they think they will. I know when an athlete says “I feel fine” and means it, versus when they say “I feel fine” and are lying to themselves. I know which athletes train great alone but fall apart in race environments — and how to fix that.
You cannot compress 32 years of real experience into a training plan prompt. You can’t ask ChatGPT “what does a runner look like six weeks before they quit?” and get an answer that’s worth anything.
Experience isn’t data. It’s pattern recognition built from being there, in person, in conditions, in the real world — over and over and over again.
The Group Is the Secret Weapon
Here’s what no app is giving you: the energy of 30-60 people showing up at 5:30am.
When you train alone with a plan on your phone, motivation is entirely on you. Some days that works. Most days, if we’re being honest, it doesn’t. You negotiate with yourself. You shorten the run. You skip the tempo intervals.
In a group, something different happens. The person next to you is going. So you go. The pace picks up. You find something you didn’t know you had. You finish a workout you would have quit at mile 2 if you were alone on a treadmill.
That dynamic is not replicated by any app, any algorithm, or any AI. It is a human thing. It requires human beings in the same space, at the same time, suffering and succeeding together.
Motivation delivered through a push notification is not motivation. Motivation is your training partner refusing to let you slow down with 400 meters left.
I’ve watched athletes nail every workout in their training plan and then fall completely apart in a real race environment. You want to know why?
Because they trained in a controlled environment and expected race day to be controlled.
It isn’t.
Race day is humidity and headwinds and a porta-potty line that cost you four minutes and a nutrition strategy that stopped working at mile 9. Race day is the athlete who goes out too fast in the first mile and blows up by mile 6, because no one ever taught them what controlled effort actually feels like in a crowded race start.
When I coach athletes onsite, I teach them to train in the real world, in real conditions, with real obstacles, with real people around them. We run the hills that hurt. We do brick workouts in heat when it would be easier to reschedule. We practice start-line strategy because the start line is where bad decisions are made most often.
A training plan tells you what to do. A coach teaches you how.
The Collaboration Nobody Talks About
Here’s the part that gets left out of every “AI vs. human” conversation:
The best coaching relationships are collaborations.
When I build a plan for an athlete, I’m not handing down commandments. I’m starting a conversation. How did that feel? What’s your body telling you? What happened at work this week? Are we being realistic about this timeline?
That back-and-forth, the athlete’s honest self-reporting, my experience interpreting it, and the ongoing adjustment of the plan, that is where results come from. Not from the plan itself. From the process of building it together, in real time, with a human being who gives a damn whether you make it to the finish line.
So Where Does AI Fit?
I’ll be straight with you: I use AI tools to make my coaching better. I use them to organize, to research, to communicate faster with athletes, to help produce content like this. Technology makes me more efficient.
But efficiency is not coaching. Efficiency is infrastructure.
The coaching is me, on the track at 5:30am, watching how you’re moving, adjusting your effort, pushing you past what you thought was your limit, and celebrating with you when you cross a finish line you weren’t sure you could reach.
Thirty-two years of that. No app included.
The Bottom Line
Use the apps. Track your data. Listen to the podcasts. Read the blogs. I’m not against any of it.
But if you’re serious about your running or triathlon, if you have a real goal and a real timeline and you actually want to get there, hire a coach. A real one. One who’s been where you are, has seen what you’re going through, and will be standing there at the track when the plan says easy day but your body says otherwise.
Success in endurance sports doesn’t come from the perfect algorithm. It comes from collaboration between an athlete who shows up and a coach who knows what to do with them when they do.
The work is still the work.
Do the work.
— Tom
Tom Clifford is the CEO of Without Limits Endurance and a USATF Level 2 and USA Triathlon certified coach with 32 years of running experience. He coaches runners and triathletes of all levels across the Carolinas — in person, in groups, in the real world.
Ready to stop training alone? Learn more about coaching programs at Without Limits.
The 4-Week Rule: What to Do Right Now If You’re Racing This Spring
By Tom Clifford | Without Limits
Four weeks out. That’s where a lot of athletes either lock in, or start to panic.
I’ve been coaching runners and triathletes for years, and I can tell you: the athletes who race well in May aren’t the ones who train the hardest in April. They’re the ones who train the smartest in April.
Here’s what I tell my athletes when we’re a month out from a goal race.
Stop Adding. Start Sharpening.
The biggest mistake I see this time of year is athletes trying to cram in more volume. They look at their training log, see a gap, and decide to fill it with extra miles, extra intervals, extra time in the pool.
Don’t do it.
Your fitness is already built. The work you put in over January, February, and March is in your legs right now. Adding a big training block 4 weeks out doesn’t add fitness — it adds fatigue. And you’ll carry that into race day.
What you should be doing is sharpening what you already have. Shorter, faster, cleaner efforts. Your workouts should feel sharp. If they feel heavy and labored, that’s a signal — not a green light to push harder.
Race-Specific Work Only
Four weeks out, every key workout should simulate what race day is going to demand.
If you’re running a half marathon, your long runs should include miles at goal race pace. Not full race effort — controlled, sustainable, confident.
If you’re racing a half iron-distance triathlon, your brick workouts matter right now more than anything. Get off the bike and run. Teach your legs how that transition feels. Do it repeatedly. Your body needs to know what it feels like to shift gears.
I always say: workouts are supposed to be in workout mode, not race mode. But at 4 weeks out, you want your workouts to feel like a taste of what’s coming.
Recovery Is Training
This is the part most athletes skip over — or feel guilty about.
Your easy days need to be easy. Zone 2, conversational pace, nothing heroic. The purpose of easy days is to let your body absorb the work you’ve done. If you’re grinding through your easy days, you’re not recovering. You’re just accumulating more fatigue.
Sleep. Eat well. Hydrate like it’s your job. These aren’t soft suggestions — they’re performance variables. The athletes I’ve coached who sleep 7-8 hours and eat consistently race better than the ones who train more but sleep less.
Mental Preparation Counts
Four weeks out, the mental side of racing starts to matter. And I don’t mean visualization routines or elaborate rituals. I mean knowing your plan.
Know your race pace. Know your nutrition strategy. Know what you’re going to do when things get hard in mile 10 — because they will get hard. Plan for it now so you don’t have to figure it out on race day.
The athletes who struggle in races are usually the ones who didn’t have a plan and started making decisions with tired legs. The athletes who thrive are the ones who ran their race, not someone else’s.
The Taper Is Not the Enemy
About 10 days out, you’re going to feel flat. Sluggish. Like your fitness disappeared overnight.
It didn’t.
That’s your body consolidating everything you’ve built. The legs that feel heavy on Tuesday before a race-week workout are the same legs that feel sharp and ready on Saturday morning at the start line. Trust it.
I’ve seen more athletes mess up a good training cycle by panicking during the taper than I can count. They start adding runs back in. They decide to “test their fitness” one more time. Don’t do it. Respect the process.
Get Your Gear Sorted Now
Four weeks out is also the time to audit your kit. Not race week. Now.
- Are your shoes still good? If you’re 400+ miles in, it might be time.
- Have you tested your nutrition plan in training? Race day is not the day to try something new.
- If you’re racing triathlon, have you ridden your race wheels? Swum in your wetsuit this season?
Logistics issues on race morning — a flat, a broken buckle, a wetsuit that doesn’t fit — are all things you can solve in the next four weeks. You can’t solve them at 5am in transition.
The Bottom Line
Four weeks is enough time to sharpen everything you’ve built. It’s not enough time to build something from scratch — and that’s okay.
If you’ve been putting in the work, trust it. If you feel like you haven’t done enough, the answer isn’t more panic miles. The answer is focused, specific preparation from here to race day.
Do the work. Then race.
Tom Clifford is the CEO of Without Limits and a USATF Level 2 and USA Triathlon certified coach based in Wilmington, NC. He coaches runners and triathletes from beginner to Olympic Trials Qualifiers and Ironman Finishers. Ready to stop guessing and start training with a plan built around your race? Get in touch here.
Why Running in the Wilmington Heat Feels So Hard (And Why It’s Actually a Good Thing)
By Coach Tom Clifford
Every summer, I get the same questions from runners:
“Why do I feel so slow?”
“Why is every run a grind?”
“Am I losing fitness?”
Trust me, you’re not alone. We’re deep into the Wilmington summer heat and humidity, and it’s brutal. Every mile feels harder than it should. You’re sweating buckets before you even hit mile one, and the paces you were running in May feel completely out of reach.
Here’s what you need to know: this is normal.
Heat + Humidity = Slower Paces, Higher Effort
When the dew point climbs above 65–70, your body struggles to cool itself. Heart rate goes up. Perceived effort skyrockets. Your system is working overtime just to keep from overheating.
Humidity traps heat around your body, like running in a warm, wet blanket. In fact, humidity affects performance in a similar way to altitude. It limits oxygen availability, slows your system down, and makes every stride feel like you’re carrying a weighted vest.
So no, your fitness didn’t vanish overnight. The conditions changed. And how you respond depends a lot on your body type and how well you manage heat.
Summer Training Is the Dirty Work That Pays Off Later
Running in this weather is tough, but it’s building you up. You’re training your body to become more efficient. You’re developing mental toughness, sharpening your cardiovascular engine, and showing up when it’s uncomfortable.
You might not see the gains now, but they’re coming.
Come October, when the air cools and the humidity breaks, your body will feel 10 pounds lighter. Your legs will come alive. You’ll run the same routes you’re struggling with now and hit splits that feel smooth again. That’s not magic, that’s the result of grinding through summer.
Stay Consistent. Trust the Process.
Don’t chase splits. Train by effort. Hydrate like it’s your job. Take your easy days easy and your hard days smart.
When you have a good run, write it down. When you have a tough one — check the basics: Did you sleep enough? Hydrate? Fuel properly? Overtrain the day before? Learn from it.
You’re not falling behind just because you feel off, but you will fall behind if you let the heat beat you mentally. Don’t give in. Keep showing up and doing your best in these conditions.
This Is Where the Growth Happens
Every year we forget how tough summer running gets, and every year it humbles us. We’ll always keep adjusting workouts to give you a better shot at success, but some days we still have to grind it out.
Living in your comfort zone won’t get you very far. Progress happens outside of it. That’s why not everyone sticks with this sport.
But you’re not everyone. You’re out there in the thick of it.
Keep showing up. Fall fitness is earned in the summer sweat.
Most runners have experienced it. That feeling, deep down in the gut, that signals bad news if you are midrun or ridrace. It means you must slow down or stop and
(hopefully) find a bush, a tree, or a porta john and take care of business or risk the unfortunate and embarrassing mess of not making it!
If you are one of the lucky runners who has never experienced this, read no further. This article is a summary of the possible causes of runner’s diarrhea and how you can
prevent it while running.
1. Eating a high fiber or high fat diet, especially in the 1-2 days prior to a big run or race can contribute to having a larger load of **** and the need to eliminate said load.
Prevention here involves eating low fiber carbohydrate foods for at least 1 day prior to your event paired with lean protein and generally avoiding fibrous veggies, beans, and salads. An
example might be meals of chicken or fish served with white rice or white pasta or white potatoes and/or white or sourdough bread. Low fiber and low fat breakfast items such as instant oatmeal, plain bagel, banana, and a favorite sports drink are recommended 2-3 hours prior to race start, to allow time for full elimination.
2. Lack of hydration and electrolytes in the days leading up to your race or during a run can lead to gut distress.
Prevention: Losing 4% of body weight in sweat during a run or race increases your risk of bowel movements while running. Drink about ½ of your body weight each day in fluid ounces to maintain hydration. Try drinking a diluted carbohydrate drink with electrolytes before, during, & after running to maintain electrolyte balance and optimal performance.
3. Eating or drinking foods or products containing lactose, fructose, or agave syrup for certain individuals will increase likelihood of gut issues while running.
Prevention: Many runners have some degree of Lactose intolerance and dairy products can cause increased gas, bloating and bowel movements in those individuals. Women have a harder time digesting and processing fructose than men and this can lead to more gut issues with any sports drinks and energy gummies/gels that are high in fructose!! i. Try to use drinks and chews or gels that do not contain fructose: Skratch, Huma, Tailwind, Clif, UCan are some brands to try
4. Lack of regular eating habits and a strong routine around nutrition for training
Prevention: Our bodies like to create and maintain a state of balance… changing routines can have a HUGE impact on how we feel and perform. Avoid introducing new foods and or
drinks on or near race day. Start introducing any new fluid replenishers, gels, bars, race breakfast, etc. weeks or even months prior to race day and during training days to get your
body used to them. Plan and practice eating and drinking for your race day routine around a similar time you would for race day so your body is more likely to be optimally prepared.
Keep a journal of foods you try and your bowel movements so you know what works best.
5. Relying on bowel prep and anti-diarrhea medications can be risky.
Prevention: Using drugs such as chemical laxatives, enemas, bowel preps, and colonic irrigations to purge their intestines can cause altered electrolyte levels and have side effects such as nausea and cramping. Avoid taking ibuprofen before a race as it can aggravate GI bleeding and potentially cause leaky gut which could interfere with fluid balance and cause dehydration, as well as potentially interfere with recovery. INSTEAD… try eating a few mint TUMS roughly 20 minutes before higher intensity workouts and long runs. This can help slow down GI issues. ALSO…consider taking a prebiotic/probiotic product each morning oftaper week to help improve gut integrity which can help when the gut is stressed due to increased body heat and lower oxygen levels in circulation during exercise.
6. Lack of food intake and nutrition/hydration in the days leading up to the race
Prevention: DON’T STOP EATING!!! The last thing you want to do is stop eating during the build up to your event and long training runs – your body needs that fuel! It can take anywhere from 24-72 hours for food to travel through our digestive system (and this tends to be faster with runners) so continuing to consume food throughout training and up until ~ 3 hours before the race will help maintain the natural cycle of food absorption and digestion. If worried about bowel movements during long runs or race day, start keeping a journal of foods you consume and how your body reacts to them (positive or negative) so you know what you want to eat during training and pre-race.
Have you noticed feeling fatigue, tired or heavy legs during running, difficulty completing workouts, or not recovering well before the next session?
You may have low iron stores (as measured by low serum ferritin). In fact, many athletes experience some form of nutrition related fatigue that is related to one of the following:
- Under fueling in general, not eating enough energy (calories) to support training.
- Not taking in enough carbohydrate during the time just before, during or after training.
- Eating inadequate iron to support the demands of running and suffering from lower production of hemoglobin and red blood cells – that carry oxygen to working muscles.
Low levels of hemoglobin in the blood, or low levels of the iron storage protein ferritin, can have a profoundly negative impact on your ability to have successful workouts and races.
Low ferritin levels can cause poor performance, even when hemoglobin levels are normal.
Research with high school cross country runners has shown about 3% of boys and 40% of girls were iron deficient at the beginning of the season and even higher numbers were seen by the end of the season.
There are 3 primary sons for why female runners are at greater risk for iron deficiency:
- dietary intake of iron tends to be very poor.
- menstrual cycles cause a substantial loss of blood. This increases the body’s demand for iron.
- running training itself causes an additional loss of iron – this happens primarily through gastrointestinal blood loss.
Distance runners can suffer from impaired performance even at iron levels at the low end of the “normal” reference range. (12 – 200 ng/ml for women; 12 – 500 ng/ml for men)
Athletes with ferritin levels at the low end of “normal” for the general population were found by researchers to exhibit many of the same symptoms as athletes with clinically low iron (<12 ng/mL).
Runners should aim for ferritin levels above 40 ng/mL to avoid fatigue and impaired performance from iron deficiency.
The best and easiest way to fix iron deficiency is the most obvious one: increase the iron sources you consume. This can involve increasing your dietary intake, taking an iron supplement, or, preferably, both.
Meat, especially red meat is rich in heme-iron, the form of iron that is readily absorbed and least impacted by factors that impair the absorption of non-heme iron (found in grains, beans, and vegetables). In fact, eating varied meals that contain both heme- and non-heme iron improves absorption of the plant-based sources. Meat, poultry and fish all share this ability to improve absorption of non-heme iron foods.
There is a significant benefit of iron supplementation in iron deficient athletes, both when it comes to increasing serum ferritin levels and to increasing aerobic performance.
Runners Essentials Daily Vitamin Formula by Without Limits is designed to support the endurance athlete’s needs for key nutrients including iron. The form – Ferrous Fumarate is less likely to cause GI problems (constipation), and the dosage – 22 mg (or 122% of Daily Value) is intended to prevent diminishing iron stores. It is recommended that you take the 2 capsules with a Vitamin C rich juice to increase absorption, apart from meals, antiacids, tea, or Calcium supplements which can inhibit iron availability for absorption, or at bedtime for better GI tolerance.
By Diana Davis RDN LDN
It’s that time of year again – hot, humid, muggy! We know it’s what we get every summer in the South, but we still want/need to train to maintain fitness or get ready for our Fall races. The most important detail of your run or bike plans over summer is hydration.
Why: Better hydration (specifically using a sports electrolyte drink) promotes better cooling of the body, better endurance, less muscle damage, less cortisol release, faster recovery and a better workout the next time you go out.
What to drink: This is a very individual choice. If your run or ride is 1 hour or less, water is an appropriate choice. For all runs/rides that are over 60 minutes, I recommend a sports drink – the one that tastes so good that you want to drink it! Your sports drink choice should contain carbohydrates from dextrose, sucrose, and/or maltodextrin and relatively less fructose. Sweat contains the electrolytes sodium, chloride, potassium, and magnesium so your electrolyte replacement drink should ideally contain all of these.
How much to drink: The most accurate way to determine this is to calculate your sweat rate, but if you have not done this, a good rule of thumb is to drink 16-32 ounces of your favorite sports drink for each hour of running.
When to drink: Pre-hydrate well the day before and day of training or racing. Once you are ready to head out, drink early and often, taking sips before you start and continue to take sips while you run or ride. This means that you need to carry or wear your preferred sports drink and have replenishments stashed along your route or circle back to your house, car or other source to refill.
#diana.davis.rd
