Trek Travel is adding a 5-night cycling tour at Glacier National Park to commemorate the park's centennial year. The tour has six departures, in July and August, and costs $2,799 per person, which includes lodging, Trek bikes with GPS devices, most meals, daily route support and transportation.
I've done several bike tours in the US and Europe in the past, and cycling in Glacier Park was by far my favorite one based on the sheer beauty of this area.While you're there, you should also do some hiking of some sorts, like from Lake Louise to Plain of Six Glaciers Teahouse (it's a 6 mile round trip).