Powerful Free ToolsFor Runners & Coaches
RunThen was started by a team of runners, engineers, and sports scientists building the tools they always wished they had.
Free Tools
Everything you need to improve your running
Essential tools and calculators designed for runners and coaches, available at no cost.
Pace Calculator
Calculate splits, paces, and finish times for any distance better than any existing tool.
Exercise Sync
Seamlessly sync your workouts from popular platforms and track your progress.
Training Tools
Plan workouts, calculate training paces, and track your progress over time.
Reaction Time Test
Measure and improve your reaction time with our custom test with built-in disqualification thresholds.
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