The UTMB (Ultra-Trial du Mont-Blanc) World Series is pleased to announce the addition of the new Rothrock by UTMB™, joining the circuit as the second event on the Eastern side of the U.S. alongside Grindstone Running Festival by UTMB®. The first edition of Rothrock by UTMB is scheduled to take place on May 16-17, 2026, bringing the UTMB World Series experience to Pennsylvania’s Rothrock State Forest for the first time. 

Featuring 50km and 25km distances, the new event builds on the history of the Rothrock Trail Challenge. First established in 2009, the Challenge grew into a rugged, community-driven race that drew runners of all types from around the country, celebrating them with the tagline: “For those about to Rothrock, we salute you!”. 

The 25K course will continue to follow the classic Rothrock Trail Challenge route, a course that has been a favored stop for the classic La Sportiva Mountain Cup Series. UTMB World Series is also proud to partner with the previous Rothrock race management team to carry this heritage forward through Rothrock by UTMB.

For more information about the Rothrock by UTMB, visit https://rothrock.utmb.world. For the full schedule of UTMB World Series events, please visit https://utmb.world/utmb-world-series-events. For more information about the UTMB World Series visit www.utmb.world. Media inquiries may be directed to rothrock@press.utmb.world.   

Rothrock by UTMB™ — HAPPY VALLEY SPORTS & ENTERTAINMENT ALLIANCE

HAPPY VALLEY SPORTS & ENTERTAINMENT ALLIANCE