More than 550 participants and 100 spectators are expected to turn out for the 2018 Rio Bravo Rumble on Saturday, Jan. 13.

In its 14th year, the challenging mountain biking and running event attracts participants from throughout the nation, said Brian Monroe, event coordinator and race director. Monroe noted that most 5K and 10K runners are from within a 3-mile radius of Bakersfield, while most mountain bike and duathletes are from out of town.

“The uniqueness of this event is due to the location. It is held on private land at the mouth of the Kern River Canyon. You cannot access this amazing piece of property any other time,” explained Monroe, adding his thanks to Rio Bravo Ranch and the Nickel family for allowing use of the property. “We have permission for this one day only, so no preriding the course is allowed.”

Competition will be held in the following categories: individual duathlon: 10K run, then a 15-mile mountain bike race, $50; team duathlon: 10K run, then a 15-mile mountain bike race, $80; solo events: 5K run/walk, 10K run, challenging 15-mile mountain bike race, $40; ultra half-marathon, 15-ish-mile run on fire roads and cow trails, very challenging, $50; youth (18 and under) in the above adult races, $20 with paying adult; and short kids races, one for under 8 and one for 9-12, registration will be on the day of the event, free. A $15 late fee will be charged for registration after Jan. 6.

Go to and click on to the “Rumble” icon to access the race website for more information and registration information. Proceeds from the race will go to Bike Bakersfield, a local nonprofit that promotes bicycling and an active lifestyle in the community.

“The (Rumble’s) route has changed over the years to create new challenges, but also in part due to Mother Nature washing out areas with rain,” Monroe said. “Rain is good for filling the river, but bad for race course design.

“I anticipate the course being the same this year, as last year, but one heavy rain in a day can change that,” he said. “The final course is set a week before the event.”

The annual event is presented by Glinn & Giordano Physical Therapy, with support from Clifford & Brown, Leo Mark Hinds, Guinn Construction, Wonderful Pistachios, Fiji Water, POM Wonderful, Paramount Citrus, the Halos and Multi-Business Systems.