4runnwer guy;
I live in the East Kootenay and think you could spend weeks in our area hiking/biking. I suggest you go West to Golden and spend a couple of days there (go to the local bike/sporting goods shop for suggestions) and stay in their municipal campground for flush toilets. Then head south to Radium. Stay in the Redstreak campground and count on a week or so of activities including a drive into the Bugaboo area (you will pass the sign coming south from Golden). I don't know what you can bike up there but you can certainly do some nice hikes including that to the Conrad Kain climber's hut or the one from near the lodge to the ridge on the way to Cobalt lake. Lake of the Hanging Glaciers hike west of Radium on the Horsethief creek road is another must do for you. Bike the road section then hike the trail from there. By driving into Kootenay National Park you can access some wonderful hikes like Floe lake, and the Stanley Glacier trails. Now head south to the Whiteswan lake provincial park and hike/bike the Top of the World provincial park. The Alpine lookout trail offers outstanding views there though I wouldn't bike it. Now head to Kimberley (Riverside campground) and consult the Janice Strong hiking guide book for a huge variety of hikes. Go to Kootenay Mountain works in Kimberley for biking advice. Many, many hikes here. Send me a message (I sometimes forget to check this so be patient) for personal advice on hiking around Kimberley.
There you go. Your holiday is ready for you! The West Kootenays (Revelostoke south to Nakusp, New Denver, Kaslo, and Nelson) offers outstanding camping, hiking, and biking as well but I don't know the trails as well over there so leave that to others.