12 Hours of Lawrence Woods Medford, MA   Jul 18, 2026

Come out and enjoy a half day of the most underrated section of the Middlesex Fells Reservation, Lawrence Woods! This is a 12-hour event. Get to the Fells however you want, if driving, you should park in the high school lot The course is a 5ish mile loop around Lawrence Woods that doesn’t cross over (it shares an intersection with opposing turns). There will be a very minimal aid station (water, some sort of candy, and a sugary drink) so bring a bag and a chair and feel free to setup your own little spot (we’ll make room). The start/finish/aid station will be in the woods, about a quarter mile from the high school lot (there will be signs and a map). If you don’t want to run, come hang out and maybe volunteer!