Join us for the 12th annual Mud, Sweat & Cheers run on Sunday, December 7th, 2025 in Blackrock Park, Swarthmore PA. It's a fun, 5K-ish obstacle course trail challenge with a kids mini obstacle course also available for 3-6 year olds. Every year new obstacles are built to challenge all levels of runners. After the run, warm up in the heated tents with your team and the rest of the RUSC family!

Click here for more information and to register.