Atomic Days Blast Off Fun Run
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26th Atomic Days Blast Off Fun Run
The 26th Annual Atomic Days Blast Off Fun Run is a community celebration held in Arco, Idaho as part of the Atomic Days festivities. The event is designed for all ages and fitness levels and takes place in and around downtown Arco, with courses that use paved and improved unpaved surfaces.
Distances and formats offered include:
- 10K - paved and improved unpaved course through downtown and west of town
- 5K Run - paved and improved unpaved city streets along the base of Arco Peak and Number Hill
- 5K Walk - paved and improved unpaved city streets along the base of Arco Peak and Number Hill
- Kids 1 Mile - one mile loop through Arco streets for younger runners
Course features described by the organizer include gentle hills, nearby farmland, and high desert scenery on the 10K, and a historic town route for the 5K events. The event location is on W Grand Ave in Arco, Idaho. Registration opens May 11, 2026 and closes July 18, 2026; the listed registration fee for each event is $20. Visit the organization's website for the most recent information.