Air Canada's current premium economy (N) fares from Victoria to Asia:
- allow for backtracking eastward to YYZ/YUL en route to YVR gateway
- book into business (Rouge) on the domestic YYJ-YUL-YYJ and YYJ-YYZ-YYJ sectors
- permit a free stopover
The best mileage run seems to be YYJ-TPE for $1,305 as below, which would be worth about 5,700 PQP if credited to United.
The fare is bookable using ITA Matrix PowerTools. Note that YYJ-YUL is a seasonal June-October flight.