Wyoming · Marathon · Half
Casper Marathon
Casper Marathon is a marathon and half marathon event held in Casper, Wyoming. It is usually held in June; the exact date hasn't been confirmed in the listing yet. About 600 runners take part across all distances.
- Usually held
- June
- Location
- Casper, WY
- Field size
- ~600 runners
Race details
- Usually held in
- June (date not confirmed)
- Location
- Casper, Wyoming
- Distances
- Marathon, Half
- Field size
- About 600 runners
- Course
- Rolling hills
- Registration
- runsignup.com
- Official website
- caspermarathon.com
About the Casper Marathon
Wyoming's longest-running and best-known marathon, held each June in Casper with chip-timed marathon, half, 10K and relay options starting at the Wyo Sports Ranch. A certified Boston qualifier drawing runners from across the region.
Rankings and notes
- Rankings and awards
- USATF-certified; Boston Marathon qualifier; longest-running marathon in Wyoming (23rd edition in 2026); 2024 RRCA Wyoming State Championship
- Notes
- Regional favorite
More marathons in Wyoming
Coming up next, by confirmed date.
-
Jackson Hole Marathon, Hole Half Marathon, Jackson Hole Quarter MarathonJackson, WYMarathonHalf Marathon10K5K +1 more
More races in Casper
More upcoming races in Wyoming
Keep exploring
- All races in Wyoming
- 5Ks in Wyoming4 upcoming races
- 10Ks in Wyoming2 upcoming races
- Half Marathons in Wyoming1 upcoming race
- Marathons in Wyoming1 upcoming race
- Half Marathons in the United States1,289 upcoming races
- Marathons in the United States353 upcoming races
- June Marathons
- Marathons in Utah13 upcoming races
- Marathons in Colorado10 upcoming races
- Marathons in Idaho2 upcoming races
- Marathons in Montana1 upcoming race
Guides from the RaceRove blog
- 7 min read How to Find a 5K, 10K, Half Marathon or Marathon Near You A practical way to find running races near you: pick a distance, decide how far you'll travel, read the listing properly and confirm the details before you register.
- 9 min read How to Run a Race in All 50 States How to plan a 50-state running challenge: set your own rules, group states into trips, build a calendar around the seasons, budget for it and keep track of every finish.
- 8 min read How to Choose the Best Half Marathon for a PR, Racecation or 50-State Challenge The best half marathon depends on what you want from it. How to choose a course for a personal record, a race worth travelling for, or an efficient stop on a 50-state challenge.
- Blog All guides Planning advice for finding, choosing and travelling to races.
Casper Marathon: common questions
- When is the Casper Marathon?
- The next date hasn't been announced in the listing yet. The race is usually held in June. Check the organiser's website for the official date.
- Where is the Casper Marathon held?
- In Casper, Wyoming.
- What distances does the Casper Marathon offer?
- Marathon and Half.
- How many people run the Casper Marathon?
- About 600 runners across all of its distances. That figure is an estimate of the field size, not an entry cap.
- How do I register for the Casper Marathon?
- Registration is handled by the organiser at runsignup.com. Entry fees, caps and deadlines are set there.
Plan this race in RaceRove
Save it to your plan, compare it with other races, check typical race-day weather and track your 50-state progress in the interactive app.