Stage 4: Livermore - San Jose - 131.6km
Prime hunting for breakaway riders in San Jose hills

Amgen Tour of California - Stage 4 Map
(Image credit: AEG Cycling)
Amgen Tour of California - Stage 4 Profile
(Image credit: AEG Cycling)Stage 4 could lure out the top climbers and overall general classification contenders with a 131km stage from Livermore to San Jose that ends in with an uphill ascent on the notorious Sierra Road.
The stage will begin with a gradual ascent before hitting the first of five California Travel and Tourism Commission King of the Mountain (KOM) climbs located approximately 30 kilometres into the stage on Mines Rd. The short, sharp hill is followed by two quick ascents on San Antonio Canyon Rd at kilometres 70 and 82.
The climbing will continue up the back side of Mt. Hamilton, a 6.8 km ascent of 8.4 percent gradient that tops out at kilometre 89. The race will conclude on the grueling Sierra Rd climb that boasts a 9.4 percent gradient over the 5.6 km to the finish line.
Chris Horner, RadioShack:
"Stage four, with the Sierra Rd summit finish, is the first time that I believe a breakaway will go the complete distance and someone from the breakaway will win the stage. I don’t believe anyone from the breakaway will take the leader’s jersey but I do believe someone from the breakaway will actually win the stage.
"I think the overall classification battle will be hotly contested from behind and the Sierra Road ascent, which will show who is really in the running to win the Tour of California."
Mike Tamayo, UnitedHealthcare Pro Cycling:
The latest race content, interviews, features, reviews and expert buying guides, direct to your inbox!
"This should be the first real test between the top GC riders at the Tour of California. The tour is no stranger to Sierra Road. Also historically when the race was held in February, Mt. Hamilton would be one of the selective points of the Tour of California. Now it’s the first test. An 81-mile stage may not seem very long, but I think the first battle amongst the GC riders will happen here. A great opportunity for the climbers to size one another up."
Map
Image ©: AEG Cycling
Profile
Image ©: AEG Cycling

Kirsten Frattini has been the Editor of Cyclingnews since December 2025, overseeing editorial operations and output across the brand and delivering quality, engaging content.
She manages global budgets, racing & events, production scheduling, and contributor commissions, collaborating across content sections and teams in the UK, Europe, North America, and Australia to ensure audience and subscription growth across the brand.
Kirsten has a background in Kinesiology and Health Science. She has been involved in cycling from the community and grassroots level to professional cycling's biggest races, reporting on the WorldTour, Spring Classics, Tours de France, World Championships and Olympic Games.
Latest on Cyclingnews
-
All the new WorldTour team kits for 2026 – UAE Team Emirates, SD Worx-Protime, NSN Cycling and more
Rounding up all the reveals and new designs so far -
Best budget cycling computers: Track your ride without the big price tag
Affordable GPS head units that help you track data, plan routes, track performance metrics and more -
'It was a snowball effect' – Oscar Onley's rapid transformation into an in-demand Tour de France contender
'Now I feel like I have a leg to stand on and I can put myself forward and say that I want to podium at a Grand Tour and ultimately win one in the coming years' -
The Specialized Sale has discounted this top-rated winter jacket by an incredible $135 – Treat the cyclist in your life to a luxurious layer this Christmas
The best cycling jackets don't come cheap, but with up to 60% off, the Specialized Prime-Series Alpha Jacket is a must-buy bargain



