UTMB World Series

The UTMB 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.