Yuma Territorial Marathon, Half Marathon, 10k and Team Relay
About this race
Starting at Cocopah Casino & Resort and running through scenic areas like Somerton and San Luis, Arizona, not only offers a beautiful backdrop for the race but also gives runners a chance to experience the charm of the desert southwest and the rural communities of southern Arizona.
Due to the favorable elevations and weather, the course is conducive to setting your best times and provides an excellent opportunity to qualify for the Boston Marathon as this course is certified by the USATF. With minimal elevation changes and the opportunity to run downhill at the start, this race is an ideal setup for achieving personal best times. The out-and-back course design provides a sense of familiarity for runners, which can be both mentally reassuring and strategically advantageous. The slight uphill portion near the finish line adds an exciting challenge for participants to conquer.
The course starts at Cocopah Casino & Resort and runs on Southbound shoulder of US Highway 95. Runners leave the Cocopah Indian Reservation and pass through Somerton, Arizona. Marathoners will continue through Gadsen, Arizona and into San Luis, Arizona city limits. All runners will return back on the Northbound shoulder of US Highway 95 finishing back at the Cocopah Casino & Resort. This race will bring you through the beauty of the desert southwest and through the rural communities of southern Arizona.
Entry Fees:
- Full Marathon - $105 (Active Military and Per Family Member - $75)
- Team Relay Marathon - $250/team (Active Military and First Responder - $125)
- Half Marathon - $65 (Active Military and Per Family Member - $35)
- 10K Run - $45 (Active Military and Per Family Member - $25)
Pick your distance
Running
Marathon
The race is marked off each mile, with hydration stations at almost every marker. There will be a couple of first aid stations on the course as well. Runners may be asked to withdraw from the race if they do not reach the turnaround point by 10:00 AM. The course closes at 1:00 PM.
Half Marathon
The race is marked off each mile, with hydration stations at almost every marker. There will be a couple of first aid stations on the course as well. Runners may be asked to withdraw from the race if they do not reach the turnaround point by 10:00 AM. The course closes at 1:00 PM.
10K
The race is marked off each mile, with hydration stations at almost every marker. The course closes at 1:00 PM.
Team Relay
The team relay is a 4-member relay during which each member runs one leg of the marathon course. Military /First Responder Pricing *Requires all team members be active military/first responder or immediate family members of active duty/first responder with at least one active duty/first responder participant. The race is marked off each mile, with hydration stations at almost every marker. There will be a couple of first aid stations on the course as well. Runners may be asked to withdraw from the race if they do not reach the turnaround point by 10:00 AM. The course closes at 1:00 PM.
Typical race-day weather
Based on 3 years of Open-Meteo archive data for this event's race dates in Somerton, plus the 3 days either side.
The sun rises at 7:34 AM and sets at 6:09 PM local time (MST) in Somerton on January 30, 2027 — 10h 35m of daylight.
Course
No course map published yet.
The organizer hasn't released a route for this event, and we don't publish guesses. If you're the organizer, send us a GPX file and we'll draw the profile.
Reviews
Done this event?
If you've participated in this event, share your experience with other runners
Other races near Somerton
Different organizers, within 40 miles, in the next three months
Where this page comes from. Race details were last updated on . We re-check listings regularly and again in the week before race day.
- Entries, prices, waves and inclusions — the event's official registration page
- Temperature and humidity — Copernicus ERA5 reanalysis via Open-Meteo (CC BY 4.0)
- Elevation and terrain relief — Copernicus DEM GLO-90, ESA (CC BY 4.0)
- Comparisons and counts — Race Discovery calendar, 1 Somerton event
Spotted something wrong? Tell us and we'll fix it.