The Tour of California announced its lineup of teams on Friday.
Sagan will anchor his Tinkoff-Saxo team while Kittel will sprint for Team Giant-Alpecin. They will be joined by fellow WorldTour teams BMC Racing, Etixx-Quick-Step, Cannondale-Garmin, LottoNL-Jumbo, Trek Factory Racing and British heavyweight Team Sky.
Among the remaining 10 teams is MTN-Qhubeka, which recently became the first team registered in Africa to receive a wild-card invitation to the Tour de France.
This year's course stretches nearly 700 miles through 13 host cities. For the first time, there will also be a three-day women's race beginning May 8.