Horseback Riding?

I’m visiting the Whitehorse area from Sept 23-30th and I really would love to do a horseback riding excursion. I have been in touch with Caribou Wild Mountain tours who have a minimum number of people required for a day tour… and Yukon Horse-packing Adventures and Sky High Wilderness ranch who end their horseback riding the week before I arrive for the season… does anyone else have any other suggestions or places I can check with? Thank you!