Race Types & Distances
5K, half marathon, marathon, ultra, triathlon distances, and every race format explained.
Terms in This Category
7 terms5K
3.1-mile road race — the most popular distance worldwide and a gateway to competitive running.
10K
6.2-mile road race — a middle distance that blends speed endurance with aerobic fitness.
Half Marathon
13.1-mile race and one of the fastest-growing distances in road running.
Marathon
26.2-mile race — the classic endurance distance inspired by the legend of Pheidippides.
Ultramarathon
Any race longer than a marathon (26.2 miles). Common distances include 50K, 100K, and 100 miles.
Sprint Triathlon
Beginner-friendly triathlon: 750m swim, 20K bike, 5K run. Perfect first multi-sport race.
Ironman
Full-distance triathlon: 2.4-mile swim, 112-mile bike, 26.2-mile run. The ultimate endurance test.
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