My wife has been getting more and more into cycling, and would like to join some kind of a club. I think she's especially keen on an all-women's club, and I'm sure that in a city the size of Toronto there must be at least one, but when I look online I see stuff in Oakville and Aurora.
Though not women's only, both Darkhorse Flyers and Lapdogs Cycling Club have lots of female riders. If you look at race results, those two clubs make up like half of all the riders for a given women's category. Also, they both offer lots of rides for varying abilities, not just for racers.