Step 6: Claim your gear and get changed
Take a good look at the 
Finish Map. Maybe print it out.
The bags will be stored in Mission Point House. This is the building to the right of the finish line. Go to the entrance closest to the ocean. Show the volunteers your bib number and they'll fetch your bag.
Now you can go get changed, in the heated(!) Rotary washroom building at the Davis Bay Beach parking lot. No stripping down in the bushes in the park, please, this is a family-friendly event. See map. Follow the pathway or walk on the beach. There are change cubicles so you don't have to worry about dropping your socks in the toilet.
Note: You can shower back at the Gibsons Community Centre later. Show your bib number for a free shower. Bring your own towel, so you don't end up using your sweaty t-shirt.