Air distance from Hobart, Australia to Riverside, USA is 7992.3 Miles (12862.3 Kilometers / 6940.5 Nautical Miles).
Flight duration time from Hobart to Riverside is 16 hrs, 35 mins. This is the In-The-Air flight time. You should also add the taxi time, airport wait times and possible delays due to bad weather, etc. for the total flight duration time.