Half a dozen kennels operate around Saariselkä, offering anything from a 30-minute taster ride to multi-day expeditions where you camp in the wilderness and drive your own team. The standard introductory tour is around two hours: you get a briefing, a team of four to six dogs, and the chance to actually drive the sled yourself rather than just sitting in one.
Mornings are quieter and the light is better for photographs. Operators include Saariselän Husky and Hetta Huskies, both of which run their own kennels and treat the dogs as the working animals they are.
A note: the dogs are not trained to be petted, especially before a run when they are wound up. Listen to the musher.