Runners looking to tackle arguably the most challenging half marathon in the Northeast (or a rugged 5K) will get their chance in New Hampshire this September.

Registration is now open for the Kismet Cliff Run, which takes place each September in New Hampshire’s scenic and rugged White Mountains.

Kismet Cliff racers can choose from either a half marathon (aka The Beast of the East) or a 5K (the Little Beast) distance.

Little Beast is a five-mile race that navigates the roller coaster trails of Cathedral and Whitehorse Ledges. Twisting double track quickly gives way to steep, technical single track as you take on the first of two tough ascents. The subsequent descents, with miles of Conway granite all around you, will challenge even the best technique.

The Beast of the East half marathon takes the Little Beast course and adds a challenging loop over North Moat Mountain via the scenic granite Red Ridge. As racers grind their way up the 2,000 foot climb, they will have time to take in the amazing views. However, they are also fully exposed to any inclement weather, so competitors should be prepared. The Beast has over 4,300 feet of vertical.

Learn more about the Kismet Cliff Run.