SAN FRANCISCO, Oct. 5, 2015 /PRNewswire/ -- The 2015 Oregon Drive Less Challenge is back Oct. 5-18 and Metromile, the nation's only pay-per-mile car insurance provider, has joined the challenge as a top sponsor. The Oregon Department of Transportation and its partners, alongside Metromile, are encouraging Oregon residents and those that commute into Oregon to drive less to not only help participants get healthy, relax and save money but to also benefit the state of Oregon with better air, less traffic and reduced emissions. The goal of this year's 14-day challenge is for participants to pedal their way, walk, share the ride and tap into transit and the train, plus telework and log trips equal to one million vehicle miles.