Your AI running coach,
trained on your runs.
Runcaster connects to Garmin Connect™ to read your activity history and build a personalized training plan that adapts week to week. Talk to your coach after every run, set goals, and get the plan adjusted to fit your life.
No credit card required. iOS + Android apps coming soon.
Meet your coach
A coach that already knows your runs
Once Garmin Connect is linked, the coach reads your recent activity — pace, heart rate, cadence, elevation — and uses it to build a plan that fits your level and schedule. It learns your goals, injuries, and constraints across conversations.
Coach chat
Talks like a coach, not a chatbot
Greets you on first open with a summary of your recent runs and asks what you're working toward. Remembers goals, injuries, and constraints across conversations.
Plan tab
A 2-week plan you can actually follow
Day-by-day workouts with structured steps (warmup, intervals, cooldown) and pace or heart-rate targets. Training targets pinned at the top — race dates, pace goals, weekly volume.
How it works
Three steps to your first plan
Sign up
Start your 14-day free trial with email or Google. No credit card required.
Link your Garmin
Authorize Garmin Connect™ access so the coach can read your running activity data.
Meet your coach
Chat about your goals, get a personalized 2-week plan, and run it. After each workout the coach checks in and adjusts.
Privacy-first
Your data, your control
Your Garmin data powers your coach and is never sold. Coach memories and training plans are under your control — view, edit, or delete from inside the app.
Read the privacy policyPurpose limitation
Data stays scoped to coaching and plans.
User control
Disconnect Garmin, edit memories, or delete data at any time.
Secure by default
TLS in transit and access-controlled storage.
No training on your data
OpenAI for AI inference; your data isn't used to train models.
Ready to meet your coach?
Start 14-day free trial