Runners of the 50-mile and 100-mile races are required to:

• show the course map on their phone or watch at bib-pickup and

• have it with them at all times during their race.

Courses Overview 

This is a challenging and beautiful event in the Bannock and Pocatello mountain ranges surrounding Pocatello, Idaho.

Distances and elevation gain/loss based on Caltopo maps (real-world experience generally records a bit more in all measures):

1) 100-miler: 102.2 miles, 22,276′ of gain, 22.284′ of loss
2) 50-miler: 54.9 miles, 11,328′ of gain, 11,375′ of loss
3) 50-km: 35.5 miles (57.7 km), 7,540′ of gain, 7,587′ of loss
4) 23-miler: 23.1 miles, 5,685′ of gain, 5,685′ of loss

All four distances summit our namesake, Scout Mountain!

Course Maps

(all profiles, maps and gpx are being updated for 2026 due to new course routing. this message will be removed as soon as the updated information is posted and accurate)

Course Profiles: 100mile‍ ‍50mile‍ ‍50km‍ ‍23mile

Caltopo maps: 100mile‍ ‍50mile‍ ‍50km‍ ‍23mile

GPX files: 100mile‍ ‍50mile‍ ‍50km‍ ‍23mile

Historical Information

• 2026 - The SMU 50-miler start time moved to midnight (i.e., just as Friday becomes Saturday); all race start times shifted earlier to accomodate the new 10pm finish time of all distances.

• 2025 - Chip timing now at all aid stations (except Cusick Creek); SMU 100-miler became a Hard Rock 100 qualifier

• 2023 - 50 km race added (it’s actually 57.7 km, 35.5 miles)

• 2020 - Scout Mountain Ultras was cancelled due to COVID-19

• 2018 - Scout Mountain Ultras 100 mile, 50 mile and 21 miles started

• 2014 - New 100k, 60k and 35k routes

• 2013 - Pocatello 50 (miles) followed the original course

• 2012 - Pocatello 50 (miles) followed the original course

• 2011 - Pocatello 50 (miles) followed an alternative snow course

• 2010 - Pocatello 50 (miles) was cancelled due to inclement weather

• 2009 - Pocatello 50 (miles) followed the original course