Custom marathon coaching · Built on your data
The race isn't lost at mile 20. It's lost in the 16 weeks before it.
Hyper-personalized marathon coaching: a coach supercharged by AI, reading signals in your data most coaches never see. Chasing a BQ, a sub-4, a sub-3 — or lacing up for the first time — the plan is yours alone.
No call required. Send your watch data, get a real analysis — whether you sign up or not.
100%custom — zero templates
30+signals analyzed, every week
AIpowered analysis, coach judgment
1:1a coach, not a subscription app
Mile 04 · The method
How it works
Step 01 — The audit
We read your data first
Send your Garmin or Strava history. Get a written analysis of where your training leaks time. Free, no call.
Step 02 — The build
Your plan, from your numbers
Zones from your real threshold. Structured workouts synced to your watch — every interval and fueling cue beeps at the right moment.
Step 03 — The loop
Rebuilt every week
Every run gets analyzed. Next week is written from what actually happened. Questions answered within a day.
The edge
An AI-powered pipeline reads 30+ signals in your training — HR drift, decoupling, ground-contact balance, durability across long runs — and applies current peer-reviewed research. A human coach makes every call. Most coaches have one or the other. You get both.
Mile 09 · The free audit
What you get before paying anything
Sample audit · Long run
— illustrative data
Finding 1 · Intensity
Your easy runs average 12 bpm too high. That's where your recovery is leaking.
Finding 2 · Durability
HR drifts 8–11% late in every long run. Classic under-fueling: you take ~20g of carbs/hour, your goal needs 60–75g.
Finding 3 · The fix
Estimated recoverable time at your current fitness: 6–9 minutes.
Mile 11 · The coach
Built by a runner who hit the wall
Mile20 Lab exists because of a bad race. Your coach's first marathon ended the way too many do: a blowup at mile 20 — at the end of a training block that included an injury, a coach who didn't always answer, never really read the data, and prescribed the same plan he gave everyone else.
The fix wasn't a better template. It was reading the data properly. Self-taught through peer-reviewed research, lab testing on his own body — gait analysis, ergospirometry, gut-training protocols — and an AI pipeline built to see what a human eye misses, he rebuilt his own running from that wall. Then he started doing it for other runners.
He still lives on the start line: training at 8,600 ft in the Andes, chasing his own sub-3 project. Every protocol you get has been tested on the coach first.
Mile 12 · Starting from zero
Start from zero →
Never run before? That's a valid starting line.
You don't need a watch full of data or a race on the calendar. Your first block starts with a walk-run assessment and builds from exactly where you are — same coach, same data-driven method, gentler ramp. We take a small number of true beginners each season.
Mile 13 · Founding athletes · 5 spots
We're new. Our results aren't.
We're opening our first US roster. The first five athletes train at half price for three months, in exchange for one thing: an honest review at the end.
Claim my founding spot — $50/moNot sure yet? Start with the free audit
$100/mo
$50
per month, first 3 months
5 of 5 spots open
Mile 14 · Start coaching
Claim your spot
Two minutes: who you are, what you're chasing, where your training stands. A coach reads every application and replies within a day — chasing a BQ or lacing up for the very first time.
Mile 16 · Start here
Request your free training audit
Your email, your goal, and two clicks on Strava. Your audit lands in your inbox within minutes.
Mile 18 · Questions
The fine print, in plain English
Who is this for?
Two kinds of runners. Most of our athletes are adults training for a marathon or half with a concrete time goal — a BQ, a sub-4, a sub-3:30. And we take a small number of true beginners: same data-driven method, a gentler build, and a plan that meets you at zero. Either way, it starts with the application above.
Who's actually coaching me?
An endurance athlete who lives and trains at 8,600 ft in the Andes — marathons, mountain ultras up to 85K, an Ironman 70.3 — running an AI-powered analysis pipeline most coaches don't have. He built Mile20 Lab after his own mile-20 blowup under a coach who never read his data. The system reads every signal; the coach makes every decision, and tests every protocol on himself first. We let the work speak — that's why the audit comes first.
What do I need?
Any GPS watch with heart rate (Garmin, Coros, Apple Watch, Polar). We deliver your training through TrainingPeaks — the free athlete account is enough — and structured workouts sync to your watch automatically.
How do we communicate?
Asynchronously and fast: comments on your workouts plus direct messages, answered within 24 hours. No mandatory video calls. If you want a call, we can schedule one — but your plan never waits for a meeting.
What happens after the audit if I sign up?
Week one is an assessment block: we set your training zones from your real data, you run a short field test, and every session lands on your watch as a structured workout. From then on: every run you complete is reviewed within 24 hours, and your next week is built each Sunday from what actually happened — not from a template's schedule.
Can I cancel?
Month to month, cancel anytime. Marathons are a long game — we'd rather earn the months than lock you into them.
Is this medical or nutrition advice?
No. We coach training and race fueling for healthy adults. We're not physicians or dietitians, and we'll tell you to see one when your data or symptoms say you should.
Mile 20 · Decision point
Stop guessing. Start training on your data.
Founding athletes train at $50/mo for the first three months — half price — in exchange for an honest review. When the five spots are gone, it's $100/mo.
Claim my founding spot → Want proof first? Get the free audit — it takes two clicks.