I am hoping someone in this forum could help me out. I want to book a reward ticket YYZ-SEA, with a stopover in SFO on the return. Looking at fare basis TA7ON89,

ROUTING 995 FROM-TO YTO-DL-BOS-DL-BDL-DL-NYC-DL-
MSP/MEM/DTT-DL-CLE-DL-CVG-DL-ATL-DL-
COS/OMA/MSP/STL/CHI/DEN/EWR-DL-SLC-DL-
MFR/RDM-DL-EUG-DL-PDX-DL-SEA*
FROM YTO-DL-BOS-DL-BDL-DL-NYC-DL-
MEM/MSP/DTT-DL-CLE-DL-CVG-DL-TYS/BNA/
LEX/SDF/IND-DL-ATL-DL-MSY-DL-MEM/HOU-
DL-
...
OR TO DFW-DL-TUS-DL-LAX-DL-SFO-DL-
PDX-DL-SEA*
OR TO DFW-DL-PHX-DL-SAN/LAS-DL-LAX-
DL-SFO-DL-PDX-DL-SEA*
OR TO DFW-DL-ELP-DL-ABQ-DL-LAX-DL-
SFO-DL-PDX-DL-SEA*

Would the stopover in SFO on the return be allowed? If I can't stop over in SFO on the return, what's another good place to visit that is allowable on a 25K reward ticket?

Thanks!