Mountain Creek Mayhem

This edition has finished
SEP
19
2026
Experience the rocky ridgelines and pine forests of Pennsylvania at Mountain Creek Mayhem, featuring 50K, 20 mile, and half marathon trail races in Michaux State Forest.
Sat 19 Sep 2026
50 kilometers 20 miles Half Marathon

Always double-check with the organizer's website! This page may contain affiliate links.

Mountain Creek Mayhem

Mountain Creek Mayhem is a trail-running event located in the northern Michaux State Forest within the Appalachian Mountains of south-central Pennsylvania. The race headquarters is situated at the Fuller Lake Day Use Area within Pine Grove Furnace State Park in Gardners. The venue provides access to parking, bathrooms, and shower facilities.

The event features three distinct course distances:

  • 50K: Approximately 33 miles with over 4,400 feet of elevation gain.
  • 20 Miler: A course featuring 3,000 feet of elevation gain.
  • Half Marathon: Approximately 13.1 miles with over 1,400 feet of elevation gain.

The terrain consists of a variety of surfaces, including sandstone boulder ridgelines, single-track paths, pine needle-covered trails, and grassy double-track roads. Participants encounter technical forest paths, rocky descents, and woodland savannahs.

Several aid stations are positioned along the routes, offering water, electrolytes, soda, fruit, snacks, and menstrual products. A drop bag location is available specifically for the 50K distance at the 19.7-mile mark. The 50K has a 10-hour time limit, while the 20 Miler has a 7-hour limit. The Half Marathon offers an 8.5-hour time limit, which accommodates hikers and ruckers, although there are no separate divisions for these activities. Crew access is permitted at specific aid stations for the 50K and Half Marathon participants. Visit the organization's website for the most recent information.

Events nearby

Trail races of 25K and 15K through Colonel Denning State Park near Newville PA featuring significant elevation and a strict 120 runner field limit.
A Shippensburg rail-trail event offering a half marathon, 10K and 5K on a flat scenic out-and-back course with aid stations, post-race amenities and finish line photos.
Trail running event at Codorus State Park offering 5K and 3K distances, charitable proceeds, age-group awards, and preregistration benefits.
Trail races at Codorus State Park including a 40 mile ultra, relay, 25K and 10K with chip timing and proceeds supporting Animal Rescue Inc.
Add Event
Help us complete the calendar!
  • Distance is at least 5 km
  • Event has a website or Facebook page
Website
Optional: Please provide your e-mail address if we may contact you.
Report a change
We will only update the data if the information is also on the website.