Rancho Cucamonga Map Art

Rancho Cucamonga spreads across a grid laid over the San Gabriel Valley floor, with Interstate 10 running east-west as the dominant spine. The city's northern edge meets the San Gabriel Mountains foothills, where ravines and creeks drain south toward the Santa Ana River corridor that forms the southern boundary. Foothill Boulevard cuts through the center, a remnant of the original Spanish land grant roads, while newer commercial strips follow the orthogonal street grid imposed across the desert valley floor.

34.1064° N, 117.5931° W