Harvey Lewis is an American ultrarunner, high school teacher, and endurance athlete from Cincinnati, Ohio. He is best known for winning the 2023 Big’s Backyard Ultra World Championship after running 450 miles over 108 hours, setting an American backyard ultra record in 2025 with 462.5 miles, and winning the Badwater 135 ultramarathon twice. Harvey has also competed in the Barkley Marathons, represented Team USA in 24-hour world championship events, and recently completed his 100th marathon.