About This Race
The 100K serves as a substantial ultramarathon challenge that pushes runners beyond the 50-mile threshold while remaining more manageable than the full century distance. This option provides serious ultrarunners with a demanding test across the wooded loops of Pinckney, typically completed within daylight hours by most finishers. The distance attracts experienced trail runners seeking to step up from shorter ultras or those looking for a challenging race that doesn't require the extensive recovery time of longer distances.
The Run Woodstock courses wind through the scenic forests and rolling terrain of southeastern Michigan. The trails feature a mix of singletrack paths and wider forest roads through lush woodlands. The course design allows for multiple distance options using shared trail sections, with longer races completing additional loops.
The terrain is characteristic of Michigan's lower peninsula, with moderate rolling hills rather than steep climbs. The forest canopy provides natural shade and creates an immersive woodland experience. Course marking and aid station support are designed to accommodate the wide range of distances and the festival's relaxed, supportive atmosphere.
Elevation Profile
Elevation profile estimated from terrain data. Actual course may differ.
The course gains 2,067 ft over 62 miles, with the steepest section between mile 3–mile 3.
Location
Practical Info
Early September in Michigan typically offers mild temperatures with warm days and cool evenings, though conditions can vary from hot and humid to cool and rainy.
DTW - Detroit Metropolitan Wayne County Airport
On-site drive-in camping available for $80 (Friday-Saturday), with basic facilities including latrines, hand washing stations, and heated showers. No electrical or water hookups available.
Best For
Notable Features
Run Woodstock creates a unique fusion of serious ultrarunning and 1960s counterculture celebration. The multi-day festival includes on-site camping, live musical performances throughout the weekend, yoga sessions, tie-dye workshops, and themed events like the Bohemian Beverage Mile. The event's "commune code" emphasizes community, environmental responsibility, and personal expression. Participants are encouraged to decorate campsites, engage with fellow runners, and embrace the festival's peace-and-love ethos while pursuing their running goals.