Ouassim Oumaiz

Ouassim Oumaiz (born 30 March 1999) is a Spanish long-distance runner. He is the Spanish national record holder in the 5km road race with a time of 13:19, which he set in 2020 at the Seven Hills 5K Invitational. He also won the Cross de Atapuerca cross-country race in 2019.

During his successful 2023 season, Oumaiz set a personal best and Andalusian record in the 5,000 m to gain a spot representing Spain at the 2023 World Athletics Championships. However, in March 2024, news broke that Oumaiz had tested positive for a banned substance, GHRP-2, during a routine anti-doping test. He claimed that he was innocent in an interview with Sur. As of May 2024, the investigation into the positive test is ongoing.

Personal bests
Outdoor Indoor
 * 1500 m: 3:36.83 (Nerja 2021)
 * 3000 m: 7:40.62 (Barcelona 2020)
 * 5000 m: 13:06.74 (Huelva 2022)
 * 5km: 13:19 (Nijmegen 2020) NR
 * 10km: 28:35 (Madrid 2020)
 * 1500 m: 3:47.41 (Ourense 2018)
 * 3000 m: 7:44.39 (Madrid 2020)