The Rails-to-Trails Conservancy is promoting the Burn Calories, Not Carbon!™ pledge, to encourage Americans to walk or bicycle in their daily travels. According to Rails-to-Trails, "Nearly half of all trips in America are three miles or less," which is within most people's ability to walk or bicycle.

The Burn Calories, Not Carbon!™ pledge explains, "Americans deserve the choice to walk and bike safely for daily travel. Increased biking and walking is a positive response to the twin challenges of climate change and expanding waistlines. And trails and transit create opportunities to drive less."