Head to Kelleher Field in Marlborough on Wednesday, July 15th at 6:30PM for this dual-distance event featuring a USATF-certified out-and-back route on the scenic, car-free Assabet River Rail Trail. Choose between the 10K (runners only, with a 90-minute time limit) or the 5K (open to both walkers and runners), with registration at $40 ($35 if you sign up by May 31st, or $45 on race day). All participants will receive a technical race shirt, and you can pick up your bib early on Monday, July 13th at Lost Shoe Brewing Company from 7:00pm.