Kelvin Kiptum just ran 2:00:35 at the 2023 Chicago Marathon and broke Kipchoge's marathon record of 2:01:09 set in Berlin in 2022. What's next for the marathon as a sport? XENDURANCE PRODUCTS [15% OFF WITH "spencer15"]: xendurance.com/discount/SPENCER15 #KelvinKiptum #EliudKipchoge #MarathonRunning