Another vote for Terwilliger.
Alternatively, if you *like* hills
go up Vista or Montgomery, turn right onto Patton, then down Dosch to, Sunset Blvd. Right on Sunset (nice street, too), dumps you onto Beaverton-Hillsdale in front of Wilson HS. Right on Beaverton-Hillsdale, bear left on SW Capitol Hwy, ride on up, and the MJCC is on your left.
If you are playing soccer, maybe you want to save the hills for afterward.