Explore parks and public lands by bicycle with thousands of others throughout the country on the same day. This is your ride—YOU choose the park or public lands, route, mileage, adventure buddies, and snack stops. The only requirement is you ride to or within parks or public lands on September 30. Register for free AND you’ll be entered for a chance to win a Seldom Seen bike from Advocate Cycles and a trip for two, with bikes, to Glacier National Park on the Amtrak Empire Builder. Register at AdventureCycling.org.