Fat Sass Switchback Challenge

We are teaming up with our friends at Bigger Than The Trail to bring back the Fat Sass Switchback Challenge! Join us on Sunday October 5, 2025 for a 5K, 3 hours, or 6 hours. The 1 mile loop with 300 ft elevation gain starts and finishes at the Locust Grove Picnic Area off of Glen Ave in Millburn, NJ at the South Mountain Reservation. We are donating 100% of the profits to our charity partner, Bigger Than the Trail. This amazing non-profit delivers provides free therapy to those in need.

TRAIL PARTY DETAILS

***This is a FAT (S)ASS EVENT which means that we are only providing water and bibs (no swag/medals/awards). This is a BYO-everything event, so be sure to pack your snacks and electrolytes!***

All 5K runners will complete the 1 mile loop 3 times. 3 HR and 6 HR runners will complete as many loops as they can in 3 or 6 hours. Remember, if you don't finish your last loop before the 3 or 6 hour timer runs out, that loop does not count!

COURSE DESCRIPTION

The 1 mile loop has 300 ft elevation gain: 1/2 mile up the steep Lenape Trail, the 1/2 mile down the switchbacks. 95% of the course is technical, rocky trails. 0.20 mi is pavement. You can download the gpx file on our website.

BIGGER THAN THE TRAIL

We are proud to partner with Bigger Than The Trail. BTTT is a 501(c)(3) tax-exempt organization that is using trail running as a platform to advocate for mental health. BTTT's mission is to enrich the lives of individuals struggling with mental health. Through their fundraising efforts, BTTT provides free therapy to those in need! Please consider making a donation to BTTT: Bigger Than the Trail to provide cost-free therapy for folks in need.