Boulderthon Marathon route map

Boulderthon Marathon: a 42.2 km course through Boulder, CO. The map below shows the full route, including the start and finish.

Date
September 27, 2026
Location
Boulder, CO
Distance
42.2 km
Elevation gain
174 m

Course map

The Boulderthon Marathon course, 42.2 km from start to finish.
Route map of the Boulderthon Marathon course in Boulder, CO, 42.2 km

Elevation profile

The highest point on the course is 1,645 m, the lowest 1,575 m.

1,575 m1,610 mHighest point 1,645 m0 km11 km21 km32 km42 km
Distance · Elevation gain
BOULDERTHON MARATHON

September 2026

42.2 km
Distance
174 m
Elevation

Make your own Boulderthon Marathon poster

The same course, printed as a poster. Choose the colors and add your finish time.

Create your Boulderthon Marathon poster

Personalize the colors, text and map style. Printed and shipped worldwide.