I am feeling confident of bumping this to Cephenemyia apicata. A picture from behind would help. But this species is found on Vancouver Island and known for white on rear, brown on basal half of wing, two bands of reddish/orange hairs toward the rear. So pretty sure this is correct.
Jeff Boettner

I agree with Ken, this is one of the Cephenemyiinae botflies for sure. I am not very good at these guys to species. I should learn these. Some of these do use lek sites, such as hill tops or stream ravines to hang out and look for mates. So you may find more in the area if you go back around the same time of day over the next few weeks.
But I am wicked jealous. I just got back a few weeks ago from 2 months on Vancouver Island (mostly Victoria area, and some time in Tofino) collecting parasites of winter moth!!! So I missed this one by a few weeks!
Great find. Likely a deer bot, but not positive on that.

This photo was taken by a friend of ours, Hans Roemer, on his property just outside Victoria. Lots of deer around, so sounds like a good fit.