Pasadena's Route 66 alignment and the Colorado Boulevard heritage
Route 66's original 1926 alignment through Pasadena followed Colorado Boulevard from the eastern San Gabriel Valley (entering Pasadena from Arcadia and Sierra Madre to the east) through the substantial Pasadena commercial district to the western end of Old Pasadena, then turned south on Fair Oaks Avenue and Arroyo Parkway to continue toward downtown Los Angeles via various surface streets through northeast LA. The Colorado Boulevard alignment was the primary Route 66 routing through Pasadena from 1926 through approximately 1940.
The Route 66 alignment was substantially rerouted around Pasadena along Foothill Boulevard (the more northern alignment through Glendora and the eastern San Gabriel Valley) during the 1940s, removing the active Route 66 designation from Pasadena proper. However, the substantial historic preservation of Old Pasadena along the Colorado Boulevard alignment, the broader Route 66 heritage of the city, and the continued use of Colorado Boulevard for the substantial Rose Parade (which follows substantially the original Route 66 routing through Old Pasadena) maintain Pasadena's Route 66 heritage significance even though the active route was relocated.
For Route 66 travelers, the Pasadena experience combines substantial original-alignment driving (Colorado Boulevard through Old Pasadena and the broader Pasadena commercial corridors) with substantial cultural-institution and community-stop engagement (Norton Simon, Huntington, Gamble House, the substantial restaurant scene). The combination produces a Pasadena Route 66 visit that exceeds typical Route 66 community-stop expectations and rewards multi-day engagement for travelers with substantial schedule flexibility.
