Train smarter, not harder
Your historical pace, HR, and RPE inform each session's intensity and volume.
Personalised plans
Run smarter, not harder
Adaptive training that fits your week.
Garmin Connect sync
Your data, used properly
Workouts shaped by what you actually did.
Built for busy people
Consistency wins
Simple guidance you'll actually follow.
Adaptive AI training plans that change as you do
Train smarter with plans that automatically adjust to your fitness, recovery, and missed runs.Built for runners chasing 5K to marathon goals - without spreadsheets or guesswork.
Your plan adapts automatically
Miss a run or improve faster than expected? Your plan updates instantly - no manual changes.
Fits your real schedule
Workouts are ready in your Garmin Connect ready for you to schedule and execute.
Built by AI, guided by your data
Your training evolves based on performance trends, not static formulas.
You're Not Doing It Wrong
Running shouldn't feel this hard
You've probably experienced at least one of these:
- •You're told to "slow down", but still end up injured
- •You miss a run and suddenly don't know how to adjust your plan
- •Advice about zones, mileage, shoes, and strength work feels overwhelming
- •You're putting in the effort, but not seeing the progress you expected
Most plans assume perfect consistency and unlimited time.
Real life doesn't work that way.
The problem isn't your motivation — it's rigid plans
Runners don't fail because they lack discipline.
They struggle because most plans don't adapt when:
- •Life gets busy
- •Runs get missed
- •Fatigue or soreness builds up
- •Progress stalls or feels unclear
When that happens, runners are left guessing:
Do I repeat the week? Skip ahead? Push through?
How runthetic helps
runthetic is designed to guide beginners through real-world training by:
Adapting your training when runs are missed
Keeping guidance simple instead of overwhelming
Helping you build consistency without burnout
Focusing on what to do next - not just what you already did
You still do the running. runthetic helps with the decisions.
Why athletes choose runthetic
Sessions that adapt
Crushed it or missed it? The plan adjusts automatically.
How it works
- 1. Connect
Link your Garmin Connect account and set your goal (e.g. 10K PB, base, marathon).
- 2. Plan
Your AI coach builds your next session with rationale.
- 3. Execute
Sync to your Garmin Connect calendar and go. Adjustments happen automatically.
Connect your ecosystem
Link your Garmin Connect account to sync your activities with runthetic - your activities feed into the generation of your next workout.
Your coach, your way
Guide the AI coach further with a run preference and by selecting a Coach who favours your training preference.
Seamless execution
runthetic will generate a Garmin Connect running workout for you which syncs to your Garmin device - Schedule the run, sync your watch and activate the workout from the Run activity.
Built by a runner who struggled too
I built runthetic because I experienced these same frustrations: missing runs, feeling overwhelmed, and not knowing how to adjust training without starting over.
I'm building this openly, with beginner feedback shaping how it works. The goal isn't to create another complicated app - it's to make running feel manageable and sustainable.