From a photo by Bonsor's Sun Run InTraining clinic.
It's called "Nordic Walking" and the addition of ski poles to speedwalking, works similar muscle groups as in cross-country skiing or an elliptical machine.
It's also that kind of activity which allows you to see your outdoors close-up, and also to enjoy in-depth discussions with people.
I discovered this during the Sun Run InTraining clinic, at Bonsor Recreation Centre in Burnaby BC -- Excellent program with competent leaders and relevant guest speakers. I'd recommend to anybody.