If you’re looking for a challenge—or maybe just want to earn that post-race brunch—you’ll find it on these hilly half marathon courses. From rolling mountain climbs to quad-burning urban ascents, these races are not for the faint of heart. But conquer one, and you’ll feel like a rockstar.
Whether you’re training to tackle one of these monsters or just curious about the toughest courses out there, here are seven of the hilliest half marathons in the U.S.
1. San Francisco Half Marathon – San Francisco, CA
Elevation Gain: ~950 ft
When: July
The Golden Gate Bridge is stunning… and so is the climb to get there. This race takes you through the iconic hills of San Francisco, including a long, steady ascent into Golden Gate Park. If you want a course that tests your strength and rewards you with epic views, this is it.
2. Blue Ridge Half Marathon – Roanoke, VA
Elevation Gain: ~1,900 ft
When: April
Nicknamed America’s Toughest Road Half Marathon, Blue Ridge earns every bit of that title. You’ll climb Mill Mountain and finish with a brutal rollercoaster descent. It’s grueling—but gorgeous.
3. Napa to Sonoma Wine Country Half Marathon – Napa, CA
Elevation Gain: ~900 ft
When: July
Don’t let the vineyard views fool you—this course packs in plenty of sneaky climbs, especially in the first few miles. It’s scenic and challenging, and there’s wine waiting at the finish line.
4. Avenue of the Giants Half Marathon – Humboldt Redwoods State Park, CA
Elevation Gain: ~700 ft
When: May
While it’s not the steepest course on this list, the Avenue of the Giants has a constant undulating rhythm. Running under towering redwoods gives you a magical setting—but your legs will definitely notice those rollers.
5. Big Sur International Half Marathon – Monterey, CA
Elevation Gain: ~1,100 ft
When: November
Winding coastal roads, dramatic ocean cliffs, and relentless climbs—it’s what Big Sur is known for. This half marathon version keeps the elevation honest and the views absolutely unforgettable.
6. Slacker Half Marathon – Loveland Pass, CO
Elevation Gain: ~1,000 ft (but net downhill!)
When: June
Starting at over 10,000 ft of elevation, Slacker is technically a downhill course—but don’t be fooled. The thin mountain air and short, steep climbs make it uniquely challenging in a different way.
7. The Rut 21K – Big Sky, MT
Elevation Gain: ~3,700 ft
When: September
Okay, this one’s more trail race than road race—but it earns a spot for sheer brutality. You’ll ascend to the top of Lone Peak at over 11,000 ft, scrambling over rocky ridges. It’s wild, it’s steep, and it’s unforgettable.
Train Smart with the RunBetter App
If you’re eyeing any of these races, hill training is a must. The RunBetter App makes it easy to simulate courses right from your treadmill. Choose a race, pick which segments you want to run, and train with the exact elevation profile—so nothing catches you off guard on race day.
🏃♀️ Ready to Conquer the Hills?
Take your training to the next level with RunBetter—the app that brings real race elevation to your treadmill.