11 Best Summer Half-Marathons in the U.S.
Summer isn’t typically known as “race season”—but that’s exactly what makes it one of the best times to run a half-marathon.
From coastal courses and mountain views to destination races you can turn into a full getaway, summer half-marathons offer something you won’t find in the fall: smaller crowds, unforgettable scenery, and a totally different race-day vibe.
Whether you’re chasing a PR, planning a runcation, or just looking for something fun to train for, these are the 11 best summer half-marathons in the U.S. worth adding to your calendar.
1. Anchorage Mayor’s Half-Marathon
Date: June 20, 2026
Location: Anchorage, Alaska
Race Size: ~3,000–5,000
Best for: Scenery + destination race
If you want a true destination race, this is it. You’ll run along the coast with views of the Chugach Mountains and Cook Inlet, surrounded by classic Alaska scenery the entire way. It’s a moderately rolling but very runnable course—and one of the most unique race experiences in the U.S.
2. Area 13.1 Half-Marathon
Date: August 15, 2026
Location: Roswell, New Mexico
Race Size: ~1,000–2,000
Best for: Fun + unique experience
This race fully embraces its alien theme—and it’s a blast. Expect UFOs, costumes, and a quirky, high-energy atmosphere that makes it feel more like an event than a race. If you’re tired of traditional road races, this one is guaranteed to be memorable.
3. Kaua’i Half-Marathon
Date: September 6, 2026
Location: Kaua’i, Hawaii
Race Size: ~2,000–3,000
Best for: Tropical scenery
This is one of the most scenic half-marathons you’ll ever run. Ocean views, lush greenery, and a sunrise start make it feel like a dream. It’s warm and humid, but the experience—and the post-race beach time—makes it more than worth it.
4. Garry Bjorklund Half-Marathon
Date: June 20, 2026
Location: Duluth, Minnesota
Race Size: ~10,000
Best for: PR + big race energy
One of the most popular half marathons in the country, this race delivers both scenery and speed. The point-to-point course runs along Lake Superior with a net downhill profile, making it ideal for chasing a personal best. Expect big crowds and an electric race-day atmosphere.
5. Missoula Half-Marathon
Date: June 28, 2026
Location: Missoula, Montana
Race Size: ~3,000+
Best for: PR + relaxed vibe
Flat, fast, and surrounded by Montana wilderness, this is a PR course disguised as a destination race. The route follows rivers and countryside before finishing downtown, and the entire weekend has a welcoming, community feel.
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6. Too Hot to Handle Half
Date: September 12, 2026
Location: Dallas, Texas
Race Size: ~1,000-2,000
Best for: Tough conditions + redemption PR
Typically held in July, the race got moved to September for 2026 to accommodate the FIFA World Cup events happening in Dallas. The course loops around White Rock Lake and is flat and fast, making it a great opportunity for a PR—if you can handle the conditions. Expect cooling stations, ice-cold towels, and plenty of hydration along the course, plus a finish line that feels more like a celebration than survival—complete with music, beer, and a high-energy post-race vibe.
7. Iron Horse Half-Marathon
Date: August 30, 2026
Location: Washington
Race Size: ~1,000–2,000
Best for: Bucket-list experience
Set on the historic rail-trails of Washington State, the Iron Horse Half Marathon is a point-to-point course along the Palouse to Cascade and Snoqualmie Valley Trails. Once railroad lines, these paths give the race its “Iron Horse” name—and runners a smooth, mostly downhill route with a gradual grade and a few flat stretches, ideal for a steady, fast effort.
8. Madison Mini Marathon
Date: August 8, 2026
Location: Madison, Wisconsin
Race Size: ~4,000–6,000
Best for: City + college-town energy
This race blends scenic lakeside running with the energy of a college town. The course winds through the University of Wisconsin campus and downtown Madison, offering great crowd support and a fun, lively atmosphere. Train the Madison Mini course on any treadmill with the RunBetter App.
9. Shoreline Half-Marathon
Date: July 12, 2026
Location: Ventura, California
Race Size: ~2,000
Best for: Flat coastal running
If you’re looking for a summer race that won’t melt you, this is a great option. The coastal course offers ocean breezes, flat terrain, and steady pacing—ideal for a mid-season race or even a sneaky PR attempt.
10. All-Out Dog Days Half-Marathon
Date: July 11, 2026
Location: Westminster, Colorado
Race Size: ~500
Best for: Dog lovers
This race is summer running at its most fun—and most memorable. The All-Out Dog Days Half Marathon takes place on the scenic Big Dry Creek Trail in Westminster, with views of the Flatirons and a gently rolling out-and-back course that’s approachable and runnable. It’s a dog-friendly event with a relaxed, community feel, complete with a dog division, costume contests, and a laid-back, welcoming atmosphere.
11. Narragansett Summer Running Festival Half-Marathon
Date: July 12, 2026
Location: Easton, Massachusetts
Race Size: ~500–1,000
Best for: Post-race party people
This race combines running with a full summer festival vibe. After you finish, you’re rewarded with beer, BBQ, and live music—making it feel more like a celebration than a race. The course itself is relatively flat and very runnable.
Final Thoughts
The best summer half-marathons aren’t about perfect conditions—they’re about memorable experiences, unique courses, and pushing yourself in new ways. ☀️
With the RunBetter App, you can train the exact elevation profile of your race on any treadmill—so nothing catches you off guard.
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And if you’re still searching for your next race, Half Marathon Guide is a helpful resource that lets you search by date or location.