While outdoor tris are based completely on time, an indoor tri is based on distance. You have a set amount of time in which you rack up as many miles as possible through the familiar events of swimming, biking and running.  As such, indoor tris have their own nuances when compared to outdoor races.

All scoring is recorded in miles.

Swim

• 10 minutes
• 25-yard indoor pool
• Lanes shared by 2 athletes
• Total lengths determine mileage — 17 lengths is approximately 1/4 mile
• Distance will be measured to nearest length
• 10 minute to transition to bike

Bike

• 20 minutes
• Precor exercise bikes
• No bike trainers — all competitors use the same bikes
• 5 minute transition to run

Run

• 15 minutes
• Total laps determine mileage — each race location has a different length track
• Full laps and half laps are credited