Leaving mineral lake was a bit of an adventure, but once we were back on the main road the biking was relatively easy. Several people had told us that the route to take was to go north from Creston along Kootenay Lake and take the free ferry across. This apparently avoided a big pass with about 30 miles of continuous uphill.
Kootenay Lake is enormous, and you knew that since you had to follow the lakeshore for awhile you wouldn’t have to do any serious uphill. We ended up camping right on the lake, although having a campfire was no longer an option due to a fire ban.