~/tools
Prepare your race
Pick a race from the agenda, set the date, and get a phase plan computed backwards from race day. Then drop your Strava export to see your own numbers: weekly volume, longest sessions and pace trend. Everything runs in your browser.
A planning aid built on a common endurance periodisation structure, not coaching or medical advice. The analysis is classic statistics (weekly aggregates and a least-squares trend line), no black box.
1 · Phase plan, computed back from race day
Set a race date to see the plan.
2 · Your numbers, from your Strava export
Strava → Settings → My account → Download or delete your account → request your archive, then drop the activities.csv from the ZIP here.
🔒 The file is parsed locally and never leaves your browser. Nothing is uploaded, nothing is stored.
How the analysis works
- Weekly volume: activities grouped by ISO week (Monday), distances summed.
- Longest session: the single longest activity of each week, a classic build-up marker.
- Pace trend: least-squares linear regression on run pace over time. Descriptive, not predictive.
FAQ
- Does my Strava data get uploaded anywhere?
- No. The CSV is parsed in your browser with JavaScript; there is no upload, no server, no account, and closing the tab clears everything.
- Which races is the planner for?
- Any endurance start line: 10k, half marathon, marathon, trail, triathlon or Ironman. The phase structure (base, build, peak, taper) is the same, only the date changes.
- Is this a training plan?
- No. It is a calendar aid built on a common periodisation structure, plus descriptive statistics of your own past training. For a plan tailored to you, work with a coach.