By Coach Jeff Alagar, NASM Physique and Bodybuilding Coach and ISSA Certified Nutritionist. Updated November 2026.
Pace is your time divided by distance, shown as minutes per kilometre. Enter a finish time (or a target pace) and the calculator shows your pace, speed and predicted times for 5K, 10K, half and full marathon.
How this running pace calculator works
Predictions use Riegel's formula (T2 = T1 x (D2/D1)^1.06), which assumes you have trained for the longer distance. Expect to run 5 to 10% slower in Philippine heat and humidity than the prediction.
Planning a race? Browse the Philippine running events calendar.
Frequently asked questions
What is a good 5K time for a beginner?
Anything from 30 to 40 minutes (6:00 to 8:00 per km) is a solid first 5K. Finishing comfortably matters more than speed.
What pace do I need for a sub-2-hour half marathon?
About 5:41 per km held for 21.1 km.
Related calculators
These calculators give general estimates for healthy adults and are not medical advice. If you are pregnant, under 18, or have a medical condition, ask your doctor before changing your diet or training.
