Pace Calculator
Calculate running pace per kilometer and speed. Distance, hours, minutes, seconds input.
How to Use
Enter your values in the fields above and click Calculate to get instant results. All computations run locally in your browser. No data is ever uploaded or stored.
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Running Pace Calculation
Running pace measures how fast you cover a distance, expressed as minutes per mile or kilometer. CalcSolver's pace calculator converts between pace, speed, and finish time for any distance — helping you set race goals and plan training runs.
A 5K finish time of 25 minutes equals a pace of 8:02/mile or 5:00/km, with an average speed of 7.46 mph. For a marathon at the same pace, your projected finish time would be approximately 3:30. Improving your 5K pace by just 30 seconds per mile would cut your marathon time by over 13 minutes.
Effective training mixes easy runs (60-70% effort), tempo runs (80-85%), and intervals (90-95%). Most runners should do 80% of training at easy pace — the "80/20 rule" that prevents overtraining and builds aerobic capacity. Use CalcSolver's calorie calculator to estimate energy expenditure during runs.
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Frequently Asked Questions
How do I calculate running pace?
Divide your finish time by the distance. For example, if you ran 5 km in 25 minutes: 25 ÷ 5 = 5 minutes per kilometer, or 8 minutes per mile.
How do I predict my marathon time from a 5K?
A common method is to multiply your 5K time by a factor (approximately 4.6-5.0 for marathon prediction). Our calculator uses established race conversion formulas for more accurate predictions.
What is a good running pace?
Pace varies widely by fitness level. Beginner runners typically pace 6-8 min/km (10-13 min/mile). Intermediate runners pace 4.5-6 min/km (7-10 min/mile). Elite marathoners pace under 3 min/km (under 5 min/mile).