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Running Pace Calculator

Calculate running pace, speed, and finish times. Get race predictions for 5K, 10K, half marathon, and marathon distances.

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Running Calculator

Results

Pace /km

5:00

Pace /mile

8:03

Speed

12.0 km/h

7.5 mph

Distance

5.0 km

3.1 mi

Time

25:00

Race Predictions

5K25:00
10K50:00
Half Marathon1:45:29
Marathon3:30:59
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How to Use Running Pace Calculator

  1. 1

    Choose mode

    Calculate pace from time, finish time from pace, or distance from time and pace.

  2. 2

    Enter distance

    Select a preset distance (5K, 10K, half/full marathon) or enter a custom distance.

  3. 3

    Enter time or pace

    Enter your known time or pace values.

  4. 4

    View results

    See pace per km and mile, speed, and race predictions.

Frequently Asked Questions

For beginners, 10-12 min/mile (6:13-7:27 min/km) is typical. Intermediate runners average 8-10 min/mile. Competitive runners aim for under 7 min/mile. Pace varies by age, fitness, and conditions.

Pace = total time / distance. For example, a 5K in 25 minutes = 25/3.1 = 8:04 min/mile, or 25/5 = 5:00 min/km.

5K = 3.1 miles, 10K = 6.2 miles, Half Marathon = 13.1 miles (21.1 km), Marathon = 26.2 miles (42.2 km). Each roughly doubles the distance and more than doubles the challenge.