Est. 2025 · 98 Tools · Updated Daily
Every tool a runner needs.
98 free calculators for pace, training, nutrition, race day, and more. Free forever. No signup required.
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AI Personalized Training Plan
Describe your goal — AI analyzes it, picks the right tools, and generates a plan with precise paces.
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Core
Running Pace Calculator — Min/km, Finish Time & Pace Chart
Free running pace calculator for 5K, 10K, half marathon, and marathon. Get min/km or min/mile, your finish time, and pace level benchmarks.
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Training
Heart Rate Zone Calculator — 5-Zone Training Guide
What heart rate should you train at? Enter your age and resting HR to get personalized 5-zone training ranges using the Karvonen formula or max HR method.
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Social
Running Quotes for Instagram · 252 Across 7 Moods + Free PNG
252 running quotes sorted across 7 moods — Hyped, Spent, Grateful, Hardcore. Copy any line for your IG caption, or download a free transparent PNG.
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Core
VO2max Calculator — Check Your Running Fitness Level
Find your VO2max and fitness percentile — enter a race result, Cooper test, or resting heart rate. See where you rank for your age and get VDOT training paces.
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Race Day
Marathon Predictor — 5K, 10K & Half Marathon Race Predictor
Free marathon predictor — convert your 5K, 10K, or half marathon time into race-day estimates from Riegel, Cameron, and Daniels VDOT models.
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Health
Running Calorie Calculator · 2024 MET + Keytel Heart Rate
Calculate calories burned running — science-backed 2024 MET Compendium plus optional Keytel heart rate. EPOC afterburn, pace correction, food equivalents.
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Race Day
2027 Boston Qualifying Times — BQ Standards by Age & Gender
See the full 2027 BQ standards by age and gender — plus the real cutoff most tables miss: 2026 needed 4:34 under BQ. Then check your time against both.
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Training
Training Plan Generator — 5K to Marathon Schedules
Need a running plan generator for your next race? Build a custom 5K to marathon training plan with mileage progression, pacing zones, and calendar export.
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Special Edition
2026 Missoula Marathon - Jun 28
5 personality modes. Weather-reactive motivation. Shareable memories. The world's most emotional countdown timer.
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