Podcast: Track is Back, Guest Jim Walmsley on 100k World Record Attempt x 2 by LetsRun.com Listen in the player below or subscribe here on your favorite podcast app. Article continues below player Jim Walmsley joined us at 90:07 to look back at his 2020, look ahead at his 2021, and his 100k world record attempt this weekend at the HOKA Project Carbon X2. Athing Mu began her collegiate career in style, Hugues Fabrice Zango broke the triple jump record, HS girls ran 2:02 and 9:47, an Olympic champ gets popped, 16 year-old Erriyon Knighton turned pro, Alexa Efraimson has a new coach, and Nick WIllis made sub 4 minute mile history.