Third discipline in a Triathlon and also in Aquathlon and Duathlon events (can be off or on road)
Usual distances are:
Triathlon
- Sprint – 5km
- Olumpic – 10km
- Middle Distance – 20km
- Ironman – 40km
Duathlon
- Sprint – 5km then 2.5km
- Olympic – 10km then 5km
Aquathlon
- 5km