If you're chasing a half marathon this summer, Colorado might just be the perfect place to lace up. With its stunning mountain views, crisp air, and a running community that truly shows up, the Centennial State offers some of the most scenic and rewarding 13.1-mile experiences you'll find. Whether you're a first-timer or a seasoned racer, the upcoming season is packed with opportunities to test your legs and soak in the beauty of the Rockies. Here are four standout races to consider.
Byers Peak Stampede Half Marathon & 5K Run
August 22, 2026 | Fraser, Colorado
Set in the heart of the Fraser Valley, this race is a local favorite with a quality rating that puts it in the "Standout" tier. The course takes you through alpine meadows and along the Fraser River, offering a mix of gentle climbs and fast stretches. It's the kind of race that feels like a celebration of summer, with post-run festivities that make the whole day an event. Plus, the small-town charm of Fraser means you'll get plenty of cheers from the community.
TBK Bank Thirsty 13 Half Marathon
August 29, 2026 | Durango, Colorado
Durango is a runner's paradise, and the Thirsty 13 lives up to its name in all the best ways. Also rated as a Standout, this race winds through the Animas River Valley with views of the San Juan Mountains. The course is known for being fast and scenic, and the post-race beer garden is a perfect way to refuel. If you're looking for a race that combines natural beauty with a fun, festive atmosphere, this is it.
Georgetown to Idaho Springs Half Marathon
August 8, 2026 | Georgetown to Idaho Springs, Colorado
This point-to-point race takes you along the historic Clear Creek Valley, from the charming town of Georgetown to Idaho Springs. The elevation profile is notable: you'll be running at over 8,000 feet, making it a true high-altitude challenge. But the payoff is spectacular—think sweeping mountain panoramas and a downhill finish that makes for a memorable last few miles. It's a Standout race that rewards those who embrace the altitude.
2026 Thirsty 13 Half Marathon
August 29, 2026 | Durango, Colorado
Yes, there's another Thirsty 13 in Durango! This race is the sister event to the TBK Bank Thirsty 13 and offers a slightly different route through the same stunning landscape. With a quality rating that still places it solidly in the Standout category, it's a great alternative if the other August 29 race fills up. The atmosphere is electric, and the Durango running community knows how to put on a top-notch event.
Your Next Colorado Half Awaits
These four races are just a taste of what Colorado has to offer. With 15 upcoming half marathons in the state this season, there's a perfect race waiting for you—whether you're after mountain views, a personal best, or a fun weekend getaway. Start planning your adventure today and explore the full list of half marathons in Colorado.