Arizona in late summer and fall is a runner’s dream. The monsoon season breathes life into the desert, while the high country offers cool mornings and golden aspen. It’s a time of transition and energy, and the race calendar reflects that. Whether you thrive on altitude challenges, love supporting a cause, or simply want to dress up and have fun, there’s a half marathon in Arizona calling your name.
Here are four upcoming half marathons that stand out—each offers a unique Arizona experience.
High Mountain Half Marathon Decade Anniversary 2026
Date: Friday, July 31, 2026
Location: Lakeside, Arizona
Celebrating its tenth year, the High Mountain Half Marathon is a beloved tradition in the White Mountains. The course weaves through ponderosa pines and offers panoramic views of the Mogollon Rim. It’s a challenging run with rewarding scenery, and the altitude (around 7,000 feet) adds a welcome coolness in late July. Rated a Standout by the HalfRuns community, this race is perfect for runners who want a summer half that feels like a mountain escape. The anniversary edition promises extra festivities—don’t miss it.
Big Brothers Big Sisters of Flagstaff Dave McKay Memorial Half Marathon and 5K Run/Walk
Date: Saturday, August 8, 2026
Location: Flagstaff, Arizona
This race combines a beautiful run with a meaningful mission. Set in Flagstaff at 7,000 feet, the course offers stunning views of the San Francisco Peaks and cool temperatures that feel like a gift. But the real highlight is the community spirit—every registration supports Big Brothers Big Sisters of Flagstaff, providing mentorship for local youth. Whether you’re chasing a personal best or enjoying a scenic jog, this event gives back with every mile. It’s a Runner Favorite and a great way to experience Northern Arizona.
Phoenix Wicked Half Marathon, 10K, 5K and Spooky Sprint
Date: Sunday, October 18, 2026
Location: Peoria, Arizona
Get into the Halloween spirit with one of the most fun half marathons in the state. Costumes are not just welcome—they’re part of the experience. The course is mostly flat and fast, winding through Peoria’s parks and neighborhoods. After the race, enjoy treats and a spooky atmosphere that runners of all ages love. It’s a great option for first-timers or anyone looking for a low-pressure, high-fun race. The quality score reflects a solid pick with enthusiastic community support.
Chandler #AZ48 Half Marathon
Date: Sunday, October 25, 2026
Location: Chandler, Arizona
Part of the AZ48 series, this race celebrates the unique character of Chandler. The course is flat, fast, and takes you through vibrant downtown streets and residential areas. It’s a perfect fall race for those aiming for a PR or just want to enjoy a community-focused event. With a Standout rating, the race is known for its organization, supportive volunteers, and a great finisher experience. If you’re looking to cap off your fall season with a strong performance, this is your race.
Ready to find your next race? Browse our full directory of Half marathons in Arizona to see all upcoming events, get details, and register today.