Jim Walmsley: podcast appearances and interviews

Jim Walmsley, born January 17, 1990, is an American long-distance runner known for his accomplishments in ultra-trail racing. He has won several prominent races including the JFK 50 Mile in 2014, 2015, and 2016; the Lake Sonoma 50 in 2016 and 2018; the Tarawera Ultramarathon in 2017; and the Western States 100 in 2018, 2019, 2021, and 2024. Walmsley holds multiple course records, notably setting and improving the Western States 100 record in 2018 and 2019. In 2023, he became the first American man to win the Ultra-Trail du Mont-Blanc. Among his achievements are setting seven Fastest Known Time running records, including a speed record for the 44-mile Rim-to-Rim-to-Rim crossing of the Grand Canyon in 2016. Sponsored by Hoka One One, he has been named UltraRunner of the Year four consecutive times from 2016 to 2019, and again in 2023 and 2025. Walmsley's performance in 2019 saw him qualify for the Olympics marathon trials based on his Houston half-marathon performance of 2019. That same year, during the Hoka One One Project Carbon X 100K Challenge, he set a new world best for the 50-mile distance, completing it in 4 hours, 50 minutes, and 7 seconds, surpassing a record held for 36 years. He also won the World Long Distance Mountain Running Championships in 2019. In 2023, Walmsley won the Ultra Trail de Mont Blanc with a course record time of 19 hours, 37 minutes, and 43 seconds.