PacePartner.app
Free endurance tools to help self-coached runners, cyclists, and triathletes make high-friction training, planning, and nutrition decisions. Plan your race taper, analyze HRV recovery, adapt time-crunched sessions, replan missed workouts, and calculate fueling needs.
Should you train, downgrade, or skip today? Symptoms → RHR → HRV → easy-run response.
Open tool → RaceBuild a taper around your race, fatigue, training load, health, and travel constraints.
Open tool → WorkoutsOnly 30, 45, or 60 minutes? Preserve the point of the session with the smallest rewrite.
Open tool → PlanningMiss one session without wrecking the week. Move, replace, shorten, or skip with logic shown.
Open tool → NutritionCalculate optimal carbohydrate, sodium, and fluid needs for your workouts and races.
Open tool →PacePartner currently includes an HRV Readiness Calculator, a Race Taper Planner, a Time-Crunched Workout Adapter, a Missed Workout Adjuster, and a Marathon & Cycling Nutrition Calculator for self-coached endurance athletes.
Yes. The public tools are free to use, and some of them also connect to PacePartner and Intervals.icu features if you want autofill, export, or coach-chat handoff.
Yes, where supported. Connected users can use Intervals.icu data for autofill, race import, or workout export, while the public versions still work if you prefer to enter the inputs manually.
Use the HRV tool when you are deciding whether to train, downgrade, or stop. Use the workout adapter when you still want to train but have less time than planned. Use the missed workout replanner when the week gets disrupted. Use the taper planner when race day is approaching and you need a structured taper.