The Columbia Valley, just 3 hours from Calgary is an amazing place to get away to. I have been riding Mountain Bikes out there from the time that the only real trail was located on the South bank of Toby Creek. It’s on private land now and though still used by some, there are much better trails to be had in the area.
The Columbia Valley Cycling Society since 2006 has been busy building and maintaining a World Class system of Mountain Bike Trails. The best part of having them so close to Calgary is that they are usually dryer and the season begins and ends months before trails in the Calgary area are in good shape.