Race morning starts at the Kings Beach State Recreation Area, where sandy, beach-front shores deliver athletes to the clear waters of North Lake Tahoe, the largest and deepest alpine lake in the world. A lakeside transition and the start of the bike course bring riders along the shore with spectacular views down the 21-mile length of the lake as riders enter Tahoe City. Cyclists race through the Truckee River corridor, following the Truckee River past Squaw Valley and into the historic mining town of Truckee. Here the course turns south back toward the lake, rolling past the renowned Northstar Resort where athletes begin the long climb to Brockway Summit, which is at 7,200 foot elevation.
Back at Kings Beach, athletes repeat another loop before finishing at Squaw Valley. Like the courses in Lanzarote and France, Lake Tahoe truly favors the strong cyclist. With a transition at Squaw Valley village, runners will proceed back up the Truckee River corridor along the Truckee River bike path. After conquering the hilly bike athletes will appreciate a relatively flat run course along one of the most scenic mountain river corridors in the world before returning back to Squaw Valley and the satisfying finish of IRONMAN Lake Tahoe. Reaching that finish line by the midnight cutoff will truly be the achievement of a lifetime. (source: Ironman)