My understanding of all the trails in Champlain Heights is that they're pedestrian only- they're sidewalks with extremely limited visibility at times.  

Given that whenever cycling is permitted on sidewalks in this city there is signage, the same logic applies here. 

Also- this seems to confirm that-
"In Vancouver, you can ride your bicycle on roads, in protected bike lanes, and, when signs permit, on the Seawall and park paths."
 https://vancouver.ca/guides/cycling.aspx#:~:text=In%20Vancouver%2C%20you%20can%20ride,allowed%20in%20protected%20bike%20lanes.

Part of the issue here is that the city would just rather not deal with the area, which means it's ambiguous what the rules are.  

