Has the Sidewinder bitten you yet? Don't miss this free race that takes place on unpaved forest roads of Central PA's scenic Rothrock State Forest. Choose your distance, 10 kilometers or 20 kilometers! Both of these rolling, out-and-back courses use the traditional Leg #4 of the Tussey Mountainback 50 Mile Relay and Ultramarathon course. This event also features adjusted results for age and gender. Runners start and finish at Whipple Dam State Park. Start is at 9am, arrive early to register or sign up at https://ultrasignup.com/register.aspx?did=123570. Why do this? Just for the hill of it! Bring your retired sneakers and running shoes to save them from the landfill and support Jana Marie Foundation, the beneficiary of this year's Tussey Mountainback.