Running Pace, Speed & Finish Time
Pace and speed are inversely related: pace is time per unit distance (min/km or min/mile), while speed is distance per unit time (km/h or mph). This calculator converts between the two and estimates race finish times for standard distances (5K, 10K, half marathon, marathon). Enter any two known values and the third is computed automatically.
Training paces are typically expressed as pace (min/km), while treadmill speeds use km/h or mph. This tool bridges the gap. Knowing your race pace goals helps you calibrate training runs — easy runs should be 60–90 seconds per mile slower than race pace; threshold runs at 80–85% effort. All calculations are instant.