This half hour "lap-a-thon" event takes place during one of the largest non-profit events of the American Cancer Society, the Yellowstone Relay For Life. Participants have a half hour to run or walk as many times possible around the quarter mile length track in order to raise funds for Relay For Life. Laps are tracked in real time and the more laps a participant completes the more money. In order to participate runners must collect flat pledges (donations) or per lap pledges and pledges must amount to no less than $100 per participant. Pledge sheets and additional information will be mailed to participants upon registration. Pledges are due by packet pick-up on July 10th from 8:00 AM - 8:00 PM at the American Cancer Society, 1903 Central Avenue, Billings, Montana.