RENO, Nev. – Reno Air Racing Association (RARA) is pleased to announce STIHL Inc. has extended its sponsorship contract as Title Sponsor for the 2018 and 2019 National Championship Air Races as well as the airing of the NBC Sports episodes of the races in 2019 and 2020. The 55th annual STIHL National Championship Air Races are scheduled Sept. 12-16, 2018, at the Reno-Stead Airport.