Triathlons consist of swimming, biking, and running
(and they are usually carried out in that order).

Triathlons are a really good way of keeping yourself in shape as they give you a goal to prepare for and a deadline.

Triathlons can be various distances to accommodate most fitness levels, however the four most common distances are:

• Sprint distance: 750m swim, 20km bike, 5km run
  
  
• Olympic distance: 1.5km swim, 40km ride, 10km run
  
  
• Half Ironman distance: 1.9km swim, 90km ride, 21.1km run
  
  
• Triathlon distance: 3.8km swim, 180km ride, 42.2km run

If you want to test your fitness and find a triathlon in your area, check out Active.com