The official press release says:
Location: "Colorado Boulevard (between Altadena and San Gabriel Boulevards) in East Pasadena. Start: Nina St./Vinedo St., and S. on Vinedo. W. on Colorado, circles again, back up Vinedo.
Plenty of street parking is available ~ Parade route is also just west of the Sierra Madre Villa Gold Line Station (at Colorado Blvd. and Sierra Madre Villa). City buses go directly to the area.