Joe Klecker is an American long-distance runner. After a successful collegiate career with the Colorado Buffaloes he turned professional in 2020 joining the On Athletics Club coached by Dathan Ritzenhein. Klecker holds personal bests of 3:37.00 for 1500m, 7:34.14 for 3000m, 12:54.99 for 5000m, and 27:07.57 for 10000m, all set as a part of the On Athletics Club.