The Fourth Annual Mass Dash and New Half Dash - Running Massachusetts End to End for the Jimmy FundAre you feeling a little “selfish” about your running? Make your miles count by joining the fight against cancer and running in the fourth annual Mass Dash from the Berkshires to Boston. And new this year, the Half Dash, an 85-mile, single day relay from the Berkshires to Amherst. The Mass Dash and Half Dash are THE relays, Saturday and Sunday, July 13-14, created by an all-volunteer organization with 100% of the proceeds going to the Jimmy Fund and Dana-Farber Cancer Institute. Also: Mass Dash Relay Website