California International Marathon 2025 Route. Cim strives to provide multiple registration options that provide registrants maximum flexibility in their marathon race entry. With a course that has remained unchanged since its inception, the marathon will temporarily close several streets in downtown, midtown and east sacramento starting friday, dec.

— the streets of sacramento are buzzing with excitement as the city prepares to host the 41st annual california international marathon (cim) sunday. The big sur international marathon course starts and ends on beautiful highway 1, running from big sur to carmel, california.