I drove out from Calgary to Canmore, rented a bike and rode along the Bow River to Banff, then back t’other side of the mountain range – sang all the way to scare off the bears!
I suspect there are loads of trails of all sorts of abilities, particularly around Canmore.
Calgary and the west has just had it’s worst (coldest) winter for years, great if you are into winter sports but not so great for biking. Spoke to my brother who lives there last week, temperature was a sweltering 3 degrees. It relies on Chinook winds in winter to warm it up and basically they have not been coming over.
If you want warmer weather with good trails and can get away the Okenagan valley is a medium drive (in Canadian terms away)- about 7 hrs. It doesn’t get the cold of the mountains or wet of the coastline.