I live in Saskatoon. I moved to SK about 3 years ago for graduate school.
PA National Park is lovely. Little Red River Park right in the city of Prince Albert is great for biking and x-country skiing. I do quite a bit of biking (both mountain and road) in the Saskatoon area. You can practice hill climbing on a mountain bike at Blackstrap Provincial Park. I haven't been, but Buffalo Pound is also supposed to be great for cycling.
ETA: I forgot to add that, depending on where you live, there are LOTS of cycling clubs/shops/rides/etc. Most clubs operate under the umbrella of the Saskatchewan Cycling Association and are specific to geographic location. I'm a member of the NBR (mountain biking) and BCW (road/mountain/cross) clubs. BCW is actually sponsored by Bruce's Cycle Works, which is my favorite shop in the city.
Last edited by Ambikes; 10-15-2010 at 12:51 PM.
2010 Scott Speedster Limited/Bontrager Inform RL
2008 Cannondale Rush 2 Feminine/Terry Butterfly
2005 Cannondale F400/Terry Butterfly