On his 60th birthday, John Maultsby of Las Vegas took a gamble and vowed to run a marathon in all 50 states. This past weekend, Maultsby, now 73, finished his 50th at the Anthem Manchester City Marathon in Manchester, New Hampshire, when he clocked in at 4 hours, 9 minutes, 15 seconds, the Associated Press reports. He has run seven marathons just this year, according to WMUR9.
Other senior runners who have made headlines include Harriette Thompson, a 92-year-old woman who was called the oldest woman to finish a marathon last summer, while Fauja Singh, 104, has been called the world’s oldest marathon runner.
Read More: Meet the New World’s Oldest Person
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Write to Olivia B. Waxman at olivia.waxman@time.com