When the Tevis Cup endurance competition kicks off at 5:15 a.m. on Oct. 8, more than 200 horse and rider teams will attempt to travel 100 miles from near Lake Tahoe, Calif., to Auburn, Calif., in 24 hours or less. Greg Fellers, DVM, veteran head veterinarian at the ride, will oversee a team of 16 additional American Endurance Ride Conference (AERC)-certified veterinarians to make sure the horses navigate the trek safely.

Traditionally held during July, heavy snowfall along the traditional route in California’s High Sierra Mountains forced ride management to reschedule the event to October. Never before has the ride been held in the fall, and the date change brings both new concerns and potential advantages.

"The weather could about 20 to 25 degrees cooler than a traditional Tevis date, and there could be a problem with a hot, hardworking horse coming into vet checks and standing," Fellers said. "It will certainly behoove both riders and vets to expedite the (vetting) process as quickly as possible."

Should hot equine muscles cool too quickly or thoroughly, muscle stiffness could result and injuries are more likely, Fellers noted