Saturday, July 20, 10 a.m. to 8 p.m., Hinkle Fieldhouse, Butler University, 510 W. 49th St.
Participants in this endurance run on sidewalks and the dirt/gravel Canal Towpath appreciate the shade when the 1.89- and 3.11-mile courses wind through Holcomb Gardens. Compete individually or in a team of up to 8. If time is limited, try the Cat Nap 5k (one 3.11-mile lap) at 9 a.m. Details and registration here.