Base Line Road temporary closure for Amgen on Friday morning

On Friday morning, May 17, Base Line Road will close from about 9:30 to 10:30 a.m. as the Amgen Tour of California passes through Claremont, according to city staff. Amgen is the largest professional cycling race in North America.

Stage two of the women’s race will begin at the Citizens Bank Arena in Ontario at 9:25 a.m. After cycling through Ontario and Rancho Cucamonga, female cyclists will travel north on Euclid Avenue through Upland to Base Line Road. Cyclists will then head west on Base Line Road through Claremont beginning at Padua Avenue/Monte Vista Avenue to the Claremont city limit at Live Oak Canyon. Riders then continue west to Amelia Avenue in Glendora, at which point they wind north to Glendora Mountain Road for a treacherous ride north to Glendora Ridge Road for the final destination of Mt. Baldy. An official race map for Stage 2 of the women’s race is here:

To accommodate the race, a full closure of Base Line Road in both directions will take place from approximately 9:30 to 10:30 a.m. on Friday, May 17. Oncoming traffic will be stopped approximately 10 minutes before the race. Traffic going the same direction of the race will be allowed until the race approaches. All driveways exiting onto the course on Base Line Road will be closed as the cyclists pass. Traffic will be allowed to cross the course at select intersections until the race is approaching. All public facilities, parks and businesses will remain open.

The California Highway Patrol and the Claremont Police Department will oversee the closure. They will make every effort to minimize the impact on residents, businesses and traffic. For more information, visit or call (888) 777-7517.


Submit a Comment

Share This