Ironman Arizona: 3 Lap Bike Times and Speeds by Age Group

The Ironman Arizona 112-mile bike course is made up of three laps of approximately 37.5, 37.5 and 37 miles. The course is billed as flat and fast, and it is, generally. Expect wind; a headwind outbound is preferable, because of the tailwind home. How fast should you expect to ride each lap? We've done the analysis and defined the benchmarks, below. For more, see our analysis of bike and run split correlation, and our Complete Ironman Arizona Coverage.