Nathan Green (born April 10, 2003) is an American middle-distance runner who specializes in the 1500 metres. Competing for the Washington Huskies, he won the 1500 m at the 2023 NCAA Outdoor Track and Field Championships.^[1]

Competing for Borah High School in his hometown of Boise, Idaho, Green was a nine-time Idaho state champion and five-time Gatorade Idaho Athlete of the year in cross country and track and field.^[2]

In 2021, his senior year, he won the Brooks PR Invitational setting a meet record of 4:01.76, less than a second off of his 4:00.76 personal best from earlier that year. Just two days after his Brooks PR win, he would win the mile at Nike Outdoor Nationals at Hayward Field. He would graduate holding Idaho state records in the mile, 2 miles, and 5000 m.^[3]

In 2021, Green enrolled at the University of Washington, joining the Washington Huskies cross country and track and field teams.^[3]

His freshman year, he finished seventh at the NCAA Outdoor Championships in the 1500 m in June. Later that month, he won the USA U20 1500 m title.^[4] His USA U20 win qualified him to represent the United States at the 2022 World U20 Championships in Cali, Colombia where he would finish fifth.^[5]

In January 2023, he ran a mile personal best of 3:52.76 in Seattle, one of eight University of Washington runners who would run under 4-minutes in that same race.^[6] Competing at the NCAA Indoor Championships, he finished fifth in the mile.

In May, Green claimed the Pac-12 1500 m title and would go on to win the 1500 m at the NCAA Outdoor Championships the following month, finishing just ahead of Washington teammate and defending champion Joe Waskom.^[7] In July, Green would finish seventh at the USA Championships, running a 1500 m personal best of 3:36.29.

After setting a Washington 800 m school record of 1:46.50 in February 2024, Green chose to contest the 800 m at the NCAA Indoor Championships, where he would fail to advance to the final.^[8]

In April, Green ran a 1500 m personal best of 3:34.79 in California, a Washington school record and the fourth fastest time in collegiate history.^[9]

In June, Green finished fifth in the 1500 m finals of the United States Olympic trials with a personal record time of 3:32.20.^[10]