Welcome to Yarntracer!

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Your activities and adventures deserve more than just metrics and numbers. Plan them using local insights and turn them into memorable stories.

Activity Review

Upload a single FIT file for instant analysis. No registration required.

  • • Basic activity metrics
  • • Power analysis
  • • One-time session only

Plan Activity

Upload a GPX file to learn more about the area.

  • • Interactive route map
  • • Amenities & services
  • • Local points of interest
  • • Upcoming weather forecast

Create Account

Register to save your data and unlock advanced analytics across activities.

  • • Save FIT file data
  • • Cross-activity analytics
  • • AI-powered activity analysis

Connect Strava

Link your Strava account to analyze your existing activities instantly.

  • • Access all your activities
  • • Segment analysis

Upcoming Races

Discover competitive racing events. No account required.

  • • Zwift virtual races
  • • Team competitions
  • • Championship events

✨ Try Our Features

Explore our AI-powered features with demo data—no account needed!

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POI Discovery Demo

Explore AI-generated stories about points of interest along a famous Pyrenees cycling route
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Activity Narrative Demo

See how AI transforms activity data into engaging stories with timeline, highlights, and suggestions

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