Running Pace Calculator
Find your running pace per kilometer or mile by entering your distance and total time. Ideal for training target-setting and post-run analysis.
About this calculator
Running pace measures how long it takes to cover one unit of distance, typically expressed in minutes per kilometer or minutes per mile. The formula is straightforward: Pace = Time ÷ Distance. For example, if you run 10 km in 60 minutes, your pace is 60 ÷ 10 = 6 min/km. Pace is the inverse of speed — a lower pace number means you are running faster. Knowing your pace helps you set realistic race goals, structure interval workouts, and avoid going out too fast on long runs. Most training plans prescribe effort zones by pace, so accurate calculation is the foundation of structured endurance training.
How to use
Suppose you completed a 5 km run in 27 minutes and 30 seconds (27.5 minutes). Enter Distance = 5 km and Time = 27.5 minutes. The calculator applies Pace = Time ÷ Distance: 27.5 ÷ 5 = 5.5 min/km, which equals 5 minutes and 30 seconds per kilometer. To convert to per-mile pace, multiply by 1.60934: 5.5 × 1.60934 ≈ 8 minutes 51 seconds per mile. Use this result to calibrate your effort for future training runs at the same distance.
Frequently asked questions
What is a good running pace for a beginner 5K runner?
A typical beginner 5K pace falls between 7 and 10 minutes per kilometer (11–16 min/mile), resulting in a finish time of 35–50 minutes. Pace varies widely based on age, fitness level, and terrain. Most coaches recommend beginners focus on completing the distance comfortably before chasing faster paces. As aerobic fitness improves over weeks of consistent training, pace naturally decreases without extra effort.
How do I convert my running pace from min/km to min/mile?
To convert min/km to min/mile, multiply your pace by 1.60934, since one mile equals 1.60934 kilometers. For example, a pace of 5:00 min/km equals 5 × 1.60934 ≈ 8:03 min/mile. You can also work in reverse: divide a min/mile pace by 1.60934 to get min/km. This calculator handles the conversion automatically when you select your preferred distance unit.
Why does my running pace slow down over long distances?
Fatigue, glycogen depletion, and cardiovascular drift all contribute to pace slowing over longer distances. As muscle glycogen depletes after roughly 90 minutes of running, the body shifts to fat oxidation, which produces energy more slowly. Core body temperature and heart rate also rise progressively, forcing a reduction in effort to avoid overheating. Training long runs, proper fueling strategies, and pacing discipline in the early miles help minimize pace fade.