To check your mileage, there are many free online route planners. Often you have to enter each point step by step, which is time consuming, but works.

If you search the green buttons at the top of this forum page, you can click your way through to www.mapblast.com or www.mappoint.msn.com

I flew to Calgary from Toronto Ontario. Then drove to Banff/Jasper, Kelowna/Salmon Arm, to Mt. Rainier, Mt. St. Helens, Crater Lake Oregon, along the Oregon coast to Redwood NP California, to San Francisco, to Sequoia & Yosemite, then came back up across Reno to Salt Lake City, & up to Glacier NP Montana, Medicine Hat, and back to Calgary.

You have a great idea for starters on your route. Do you have a couple weeks for this trip?