The 3 person marathon relay is starts at Shasta Dam with the full marathon.
- Transition leg 1-2 is at the Keswick Boat Ramp off of Iron Mountain Road at mile 9.7
- Transition leg 2-3 is on the Diestlehorst Bridge at mile 20.
- Finish Line 26.2 : Sundial Bridge
Leg 1 9.7
Leg 2 10.3
Leg 3 6.2