Air distance from Riverside, USA to Markham, Canada is 2148.4 Miles (3457.4 Kilometers / 1865.6 Nautical Miles).
Flight duration time from Riverside to Markham is 4 hrs, 27 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.