Running Pace Calculator
Calculate pace, finish time, or distance for running and cycling. Includes mile/km splits table, preset race distances, and imperial/metric support.
About Running Pace Calculator
Punch in any two of three variables — pace, distance, or finish time — and the calculator works out the third in seconds. Planning a marathon? Enter your goal time and get the per-mile or per-kilometer pace you need to hold. Training by feel and curious how a recent run translates to a half-marathon finish? It handles that too. Preset race distances cover everything from a 5K to an ultramarathon, and imperial/metric switching means you don't have to do any unit math yourself.
The split table is where it earns its keep. Once the calculator runs, it generates a full mile-by-mile or kilometer-by-kilometer breakdown — useful for writing splits on your hand before a race or checking whether a negative-split strategy is realistic. It works just as well for cycling, so commuters and weekend riders aren't left out.
It lives in Health & Fitness alongside other training tools, and if you want to match your calorie burn to your mileage, TDEE Calculator is worth a look. Works best on a phone the morning of a race, with your target time already in mind.
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How to use
This tool calculates running and cycling pace, finish times, and distances based on your input. 1. **Choose calculation mode** by clicking the tabs at top: - Find Pace: Enter distance and time to get pace per mile/km - Find Time: Enter distance and pace to get finish time - Find Distance: Enter time and pace to get total distance 2. **Select units** using Miles/Kilometers toggle 3. **Enter distance**: - Click preset buttons (5K, 10K, Half, Marathon) for quick entry - Or manually type distance in the input field 4. **Enter time** in hours, minutes, seconds fields (leave blank if zero) 5. **Enter pace** in minutes and seconds per mile/km (only appears in Find Time/Distance modes) 6. **Click Calculate** to see results The tool displays your main result plus a split table showing cumulative times at each mile/kilometer marker. Switch between modes anytime to calculate different variables. All inputs update automatically when switching between miles and kilometers.
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