Train for your time.
Set a goal from 5K to marathon, connect Strava, and get a finish-time prediction that's honest about whether you'll hit it, updated with every run you actually do.
Race prediction
Your goal
1:45:00
Predicted finish
1:44:30
Range
1:43 – 1:46
Your prediction, week by week
Long-run consistency trending up
Tempo paces ahead of target
Illustrative example. Your numbers come from your own logged training.
The evidence
It reads your running, not your mood.
Connect Strava (read-only) and RacePacer pulls each week's runs as you do them, with the distance, pace, and the bit other apps miss: the pace of the fast reps inside your intervals. Your prediction is built on what you actually ran.
Strava · this week
| Day | Run | km | Pace | Work |
|---|---|---|---|---|
| Mon | Tempo Tuesday | 7.6 | 5:11 | 4:40 |
| Wed | Easy 6k | 6.0 | 6:30 | – |
| Sat | Long run | 15.1 | 6:05 | – |
Illustrative example. Work pace is recovered from your laps. See Help.
Built around your goal
Tell us your race and your target time. Every session is reverse-engineered from the pace you actually need.
Adapts every week
Check in weekly and preview suggested changes before anything moves. Apply what fits, skip what doesn’t, and lock the sessions you’re keeping.
Honest about your time
A finish time computed from your real efforts with published race-equivalency maths, shown as a range with a confidence level, with a straight answer on whether you’re on track.
How it works
Set your goal
Pick your race, your date, and the time you’re chasing.
Get your plan
An AI-built plan, tuned to your goal pace, mapped week by week to race day.
Run, it keeps up
Connect Strava and your week syncs as you run it, with an honest mid-week read on how it’s going. No Strava? A 30-second check-in does the job.
Watch the prediction
Every logged week updates your predicted finish. Watch it move towards your goal, or get told early that it isn’t.
Predicted finish · week by week
Illustrative example.
The honest part
Watch your prediction move.
Most plans hand you a schedule and hope. RacePacer plots your predicted finish against your goal, week by week, with a range and a confidence level, so you always know whether you're on track, behind, or off the pace, and what to do about it.
Your plan, your call
A plan that bends without breaking.
Tell it what happened (a niggle, a holiday, a breakthrough) and preview exactly what it wants to change before anything does. Apply it week by week, lock the sessions that aren't up for discussion, and roll back any version. The AI proposes. You decide.
Week 5 · preview
Intervals
6×800m at 4:40/km → 5×800m at 4:40/km
Long run
18km → 16km
“keep it conversational, protect the calf”
Illustrative example.
Build one plan. RacePacer paces it to every runner.
Coach mode is built in. Write a session once and RacePacer re-paces the speed work to each runner's personal bests automatically, while easy days stay easy for everyone. A whole team trains off one plan, without you working out everyone's paces by hand.
One plan, many runners
Duplicate it, then re-pace to each runner’s PBs in a tap.
Invite by link
Runners join from a link and keep their own login.
See every week
Track who logged what, and how it’s going, from one roster.
We're bringing coaches into the beta in their own wave and building the coach tools around them. Join the coach waitlist and we'll get you in early.
From your first 5K to your fastest marathon
Whatever number you’re chasing, RacePacer builds the plan to catch it.
Founding pricing
Lock your founding rate.
RacePacer is free during the private beta and no card is needed. These are the founding-launch prices we are planning. Reserve your tier now and you lock the founding rate when paid plans go live. We will never charge you without asking first.
Founding 100: the first 100 reservations lock a founding-member rate.
Free
Train for your time, on the house.
Free forever
- One adaptive AI plan, 5K to marathon
- Weekly check-in and manual logging
- Your current finish-time prediction
- A few AI plan edits each month
Pro
The full honest picture, updated every run.
Planned, indicative
- Everything in Free
- Strava sync with lap-level work paces
- Unlimited AI plan edits and rewrites
- Full prediction-history graph
- Plan versions and restore
Coach
One plan, paced to all your runners.
Planned, indicative · Minimum 2 runners
- Everything in Pro, for every runner
- Build one plan, auto re-paced per runner
- Your roster: who logged what, at a glance
- Invite runners by link
Reserving Pro at £4.99/mo.
No charge now. Reserving locks a founding-member rate when paid plans launch. We will never charge you without asking first.
Why trust the number
Your finish-time prediction isn't AI guesswork. It starts from your real efforts (your races, your benchmarks, and your Strava runs down to the fast reps inside your intervals) and applies the same published race-equivalency maths that Garmin, Runner's World, and Jack Daniels' tables use, restated as a range with a confidence level every week. For the marathon we correct for the known tendency of short-race speed to predict too fast, using your training volume. The summary is written by AI, but the number is computed, and we show our working. When the data is thin, it says so.
I started building RacePacer after one too many training plans that told me what to run, but never whether it would actually get me to my goal time. I wanted something built around my own numbers. My times, my target, the way I train week to week. And I wanted it to adapt when real life got in the way, backing off for a niggle or a flat week, and letting me push when fitness came good.
As you log each week, the plan updates and shows you honestly where you stand against your goal, so race day holds no surprises.
It's early days, and your feedback shapes what comes next. To be clear though: RacePacer is a training tool, not a replacement for a coach, physio, or doctor. If something hurts, trust your body over the plan.
Sean
Founder, RacePacer
Questions
Do you connect to Strava, Garmin or Apple Health?
Strava, yes, and it’s read-only. RacePacer pulls your runs’ distance and paces (including lap-level work paces from interval sessions) to power your week and your prediction. You always review before a week is saved. No Strava is fine too: your prediction then comes from your benchmark times and weekly check-ins, just a wider range and lower confidence until you log efforts closer to race day. Garmin and Apple Health are on the roadmap.
Will the AI change my plan without asking?
Never. Changes are previewed as a diff first, so you apply them week by week or skip them, you can lock sessions against edits entirely, and every change saves a version you can restore.
How does the prediction work?
We do not guess. We use established race-equivalency maths, the same kind of model behind Garmin, Runner’s World, and Jack Daniels’ tables, to turn your real efforts (your races, your benchmarks, and your Strava runs down to the work paces inside your intervals) into a time at your race distance. We blend them rather than lean on one, so it sharpens as you log more, and we show a range that widens when we are extrapolating far, like a marathon from a 5K. For the marathon we also weigh your training volume and longest run, because short-race speed alone tends to predict a marathon 10 to 20 minutes too fast. The summary is written by AI, but the number is calculated, not invented, and you can see exactly which efforts went in. Sometimes the honest answer is still "not yet".
Which races does it cover?
Everything from a 5K to a marathon, plus the 10Ks and halves in between.
Is it free?
Yes, free during the private beta, and no card is needed. Further up the page you can see the founding-launch prices we are planning, and reserve the tier you would want so you lock a founding-member rate when paid plans go live. That is a reservation, not a charge, and we will never bill you without asking first. There will always be a free tier.
Is my data safe?
Your training data is stored in the EU, never sold, and you can export any plan or delete your account whenever you want.
Is this a coach, or medical advice?
No. RacePacer is a planning tool, not a substitute for a qualified coach, physio, or doctor. Train within your limits.
Find out if you're on pace for your time.
We’re onboarding runners in waves. Get your spot.