from SR 207, October 2015 A road connecting Lake Tahoe to the Carson Valley, situated in the approximate location of today's SR 207, appears on Nevada state maps as early as 1919. By 1929, this unimproved road was included in the state highway system as the northwestern end of the former
SR 19, a longer route stretching from Lake Tahoe through
Minden and south to the California state line near
Holbrook. This section of the former SR 19 was long, about of which comprised the Kingsbury Grade portion of highway. SR 19 through the mountains remained unimproved for many years; the route was not paved until 1967. By 1968, the eastern end of the Kingsbury Grade was moved southwards to line up with what is now Mottsville Lane, mirroring the approximately alignment of the present highway. Following the realignment, the Kingsbury Grade section of SR 19 was not altered until the
1976 renumbering of Nevada's state highway system on July 1, 1976. In that process, this portion of SR 19 was assigned to the new SR 207. This change was first seen on state highway maps in 1978. Also included in the new SR 207 was the section of Mottsville Lane which connects Kingsbury Grade to
SR 88, making SR 207 about long; however, this section appears to have been removed from the route by 1983. The route has been largely unchanged since. ==Major intersections==