RaceTrainer is an open source running coach that uses state-of-the-art frontier models to create a race plan for your goals and your real life—whether you are training for your first 5K or chasing a new PR.
RaceTrainer AI Engine
Workout executed faster than planned with stable HR. AI reduces Friday intensity and raises long-run confidence.
Model input
42
recent workout signals
Plan change
-12%
fatigue-risk load
Why RaceTrainer
A good plan is not just mileage and paces. It needs to understand your history, your response to workouts, your schedule, your missed days, and the training theory behind every choice.
RaceTrainer reads your actual training signals: recent mileage, pace trends, workout execution, heart-rate context, recovery hints, and race timeline. The plan starts where you are, not where a generic template says you should be.
We build and train models around tens of thousands of users and workouts, so RaceTrainer can reason about how athletes actually respond to load, intensity, fatigue, missed runs, and breakthroughs.
We sourced the top 1,000 training documents so the model is not improvising. It combines proven endurance principles with LLM reasoning and your day-to-day data.
The AI engine
RaceTrainer uses state-of-the-art LLMs as a flexible training intelligence layer. It brings together your workouts, goals, schedule, and established training principles to create a plan that can respond as your training evolves.
Your foundation
Start with your race, current fitness, availability, training history, and preferences.
RaceTrainer way
Your workout history + model reasoning + training corpus + recovery context = plan changes with explanations.
Plan
Creates periodized blocks matched to your goal and timeline.
Read
Interprets your workouts instead of only checking boxes.
Adapt
Updates load, intensity, and recovery as your fitness changes.
Works with your training stack
RaceTrainer complements the platforms runners already enjoy. Bring in completed activities, build a personalized race plan, and send structured sessions where you need them.
Your services
RaceTrainer
How it works
01
Sync Garmin and Strava so RaceTrainer sees your actual training history.
02
Tell the AI your race, schedule, constraints, preferences, and target outcome.
03
Get a periodized plan grounded in training science and personalized to your current fitness.
04
Every workout gives the model more context to update your next block.
Managed beta
Use the hosted RaceTrainer service to create your race plan, connect Garmin and Strava, and publish workouts to Garmin. One approachable price for runners at every level.
Start for $5/monthOpen source
Run the whole platform on your own server. Keep workouts, plans, routes, and personal information in infrastructure you control.
FAQ
No. RaceTrainer is designed as a feedback loop. Your workouts sync back into the system so the model can reason about what happened and adjust what comes next.
Anyone with a race in mind. RaceTrainer can meet a casual, first-time runner where they are while giving serious athletes the structure and workout detail they expect.
Yes. RaceTrainer is MIT licensed and open source. You can self-host, export data, delete data, and choose which models power your plan.
Start now
Create your account to start with the managed service, or self-host today if you want full control from day one.
Create your account Prefer to self-host? Get the GitHub repo.