2026 Center of the Nation Series - Day 2 (CO)
Mainly Marathons · Sterling, Colorado
September 28 – 29, 2026
50 days away
- Date
- September 28 – 29, 2026 at 11:00 PM – 10:59 PM
- Location
- 17615 Hwy 14
Sterling, Colorado
80751
United States
OpenStreetMap Google Maps - Organiser
- Mainly Marathons · 36 upcoming events
About this event
World's Best Marathon & Half Series!
No Time Limits
Great Food
Award-Winning Medals
Loony Community!
We RUN this country, TOGETHER!
Event details and schedule
Here's a link to the 2026 Center of the Nation Series page, which has additional information on each of the locations and the series as a whole.
If you're interested in any Mainly gear, check out our Merch!
Peace, love, and cheers to you all!
-Mainly Family
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