Race distance and sport guides
Plain explanations of race distances and endurance sports: marathon and half marathon distances, triathlon formats, HYROX, trail running and obstacle racing.
- Triathlon distances explained: sprint, olympic, half-iron, ironman
Every triathlon distance, broken down — sprint, olympic, 70.3 (half-ironman), and full ironman. Swim, bike, run splits and what to expect.
- How long is a half marathon? Distance, miles, kilometres
A half marathon is 21.0975 km / 13.1094 miles — exactly half a marathon. Pace charts, splits, training time, and how it compares to other distances.
- How long is a marathon? Exact distance in miles and kilometres
A marathon is 42.195 km / 26.2 miles. The history of the distance, why it is exactly that, and how to train to finish one.
- What is HYROX? Format, distances, exercises explained
HYROX is a fitness race that combines 8 km of running with 8 functional workout stations. Format, distances, exercises, and how it differs from CrossFit.
- What is trail running? Trails, distances, gear, races
Trail running is running on unpaved natural surfaces — paths, single track, mountain trails. Distances, gear, how it differs from road running and where to start.
- What is a triathlon? Format, distances, how it works
A triathlon is a race that combines swimming, cycling and running in that order. Distances, transitions, equipment, and how to enter your first race.
- What is OCR? Obstacle course racing explained
Obstacle course racing (OCR) is running mixed with obstacles — walls, ropes, mud, fire. Distances, top race series, equipment, and how it differs from a marathon.
- 5K vs 10K: which distance should you race first?
A 5K is 3.1 miles, a 10K is 6.2 miles — exactly twice. Difficulty, training time, pace targets, and which to start with depending on your fitness.
- What is a Spartan Race? Distances, obstacles, training
A Spartan Race is the world's largest obstacle course race series. Three distances (5K Sprint, 10K Super, 21K Beast), the burpee penalty, training and gear.
- Ultramarathon Distances: 50K, 50 Miles, 100K and 100 Miles
Compare 50K, 50 miles, 100K and 100 miles in km and miles. See each conversion, what makes a race an ultramarathon, and how timed formats measure distance.