You don't say where in Ontario, there is a 1300 km difference between Toronto and Thunder Bay to Olds and based on a 80 kph average to accomplish a 1000km total for each day you will be traveling 12-14 hours with no diddling around. there are 3 campgrounds you can use Redwood Lodge, Didbury and Sundre. Sundre has the nicest one next to the river right in town and walking distance to the store. Didsbury is the closest to Olds 11 miles, Sundre 26 miles both on major paved highways. Redlodge is gravel road or pavement if you want to take the long way around. From Sundre you can head north on Hwy 22 to Rocky Mountain House and then west on Hwy 11 and stop at the Bighorn dam for cheap mountain camping next to the dam and lake. From there west to the corner and head north to the Columbia ice fields and camp that night in Jasper. from there you can go east or west depending what you want and time allotted. I like the others avoid Banff except in the off seasons, high prices, mega rude people and no place to park. If you head into BC expect higher prices and lots people July/August and slow traveling. If you really want to see Banff it is 2.25 hours from Sundre and you can be back late that night. Just west from Sundre is white water rafting and horse back riding in the mountains. All the places I told you about will accommodate 30+ trailers. Really depends what you want to see and do on your vacation besides drive.