Covering 13.1 miles of wild terrain, the Yellowstone Half Marathon offers a blend of raw natural beauty and a test of stamina that few races can match. Starting at Mammoth Hot Springs, the course threads through forested passages where towering lodgepoles and spruces seem to watch your every step, their needles whispering under your feet. Elevation gain sits at approximately 1,200 feet, a steady climb that challenges without overwhelming, perfect for a mix of casual runners and hardened trail aficionados.

The trail weaves alongside rivers that pulse with urgency, daring you forward, while sweeping views over the Gallatin Range reward persistence with air thin and crisp, hinting at the altitude’s presence. Terrain fluctuates from soft, pine-needle carpeted paths to firmer, rocky stretches where attention to footing pays off. Runners often encounter shifting weather — the sun can press down with summer heat, or clouds roll in suddenly, reminding all that Yellowstone plays by its own rules.

Hydration is non-negotiable. Carry at least 1.5 liters of water or plan to top off at designated stations, as the dry mountain air accelerates sweat loss. Footwear should combine grip, ankle support, and breathability; trail shoes with a solid tread shield against slippery rock and occasional mud. Starting early in the morning is advised to avoid afternoon thunderstorms common in late summer.

The course is fiercely itself—no shortcuts, no artificial aid beyond aid stations. Respect the park’s ecosystem; keep to marked routes and dispose of trash responsibly. Wildlife is a living presence here, with elk and bison possibly crossing your path, adding unexpected moments of connection to the natural world. The race’s physical demands pair seamlessly with the mental focus needed to navigate uneven ground and changing incline.

Whether you’re a race veteran or a first-time half marathoner, this event promises an experience that pairs adrenaline with awe. The landscape doesn’t ask for domination but engagement—move with awareness, and Yellowstone will offer rewards beyond the finish line.