2018 Tour of California (women's race)

Due to an overlap on the World Tour calendar with the Euskal Bira in Spain, defending champion Anna van der Breggen was not present in this year's event.

[4] Due to the overlap with the Euskal Bira, a number of World Tour Teams were absent in the race, including Boels–Dolmans, Mitchelton–BikeExchange, FDJ Nouvelle-Aquitaine Futuroscope, Alé–Cipollini, Cervélo–Bigla Pro Cycling, BTC City Ljubljana and WaowDeals Pro Cycling.

[7] In the sprints classification, cyclists received points for finishing in the top 10 in a stage.

There was also a mountains classification, the leadership of which was marked by a white jersey with red polka dots.

In addition, there was a combativity award given after each stage to the rider considered, by a jury, to have "who best exemplifies the character of those engaged in the fight against cancer / heart disease", in line with the jersey's sponsors.