Two pilots were injured in separate crashes Sunday morning while making practice runs before the start of the Reno National Championship Air Races.
Larry Lechner of Buena Vista, Colo., and Dan Borgstrom of Karlskoga, Sweden crashed within 30 minutes of each other at Reno Stead Airport, 10 miles north of downtown Reno.
The two were taken to Washoe Medical Center in Reno, where their conditions were not available. Their injuries were not considered life threatening.
Both pilots were scheduled to compete in the Formula One division, which features tiny home-built planes.
Race officials said Lechner was landing when his plane went over a dropoff at the end of the runway and flipped on its top.
Borgstrom was landing on another runway when his plane went out of control and also landed upside down.
One of the planes had major damage while the other plane had minor damage, officials said.
The annual air races begin Monday with qualifying runs, with races to follow Thursday through Sunday.