Training Tools & Calculators
Precision training tools built by endurance athletes, for endurance athletes.
Every training tool you need, in one place.
Running Pace Charts & Calculators
Plan your race strategy with precision pace calculations and split predictions.
50K Pace Chart
Plan your 50k training & race strategy
Calculate finish times and splits for 50K races. Kick off your training & race planning prep with time estimates for critical splits.
50 Mile Pace Charts
Plan your 50 Mile ultra pacing strategy
Translate your target pace into an estimated race finish time, or work backwards to find the pace required to meet your time goal.
100K Pace Chart
Plan your 100k training & race strategy
Translate your target pace into an estimated race finish time, or work backwards to find the pace required to meet your time goal.
100 Mile Pace Charts
Average Pace Targets & Time Goals
Target paces and strategic insights for 100-mile ultra finishing times from sub-16 hours to 30+ hours
Treadmill Pace Chart
Convert outdoor paces to treadmill speeds
Seamlessly transition your outdoor running paces indoors. Easily convert between imperial and metric paces to use your treadmill's MPH/KPH settings.
Triathlon & Duathlon Calculators
Comprehensive tools for triathlon race strategy and pacing.
Triathlon Calculator
Multi-sport race planning for all triathlon distances
Complete race strategy tool for Sprint, Olympic, Half IRONMAN, and IRONMAN distances. Calculate splits across swim-bike-run disciplines and transition times. Optimize your tri race performance to train smarter and race harder.
Duathlon Calculator
Run-bike-run race planning and pacing strategy
Calculate splits for duathlon races with run-bike-run segments. Plan transition strategy, bike-to-run pacing adjustments, and race-day execution. Supports all standard and custom duathlon distances.
Ironman Swim Pace Chart
Estimate your sprint, olympic, 70.3-mile, and 140.6-mile swim times
Whether you're preparing for a quick sprint tri or tackling the 2.4-mile open water swim at IRONMAN, use this pace chart to translate pool times into race day estimates. Supports both metric and imperial units.