1. Cady Mountains - Mojave Desert
2. Calico Mountain Range - Mojave Desert (N of Barstow)
3. Calico Peaks - in the Calico Range
4. CALIENTE RANGE - SE San Luis Obispo County
5. Call Mountains - San Benito County
6. Calumet Mountains - N of Joshua Tree
7. Campbell Hills - Butte County
8. Capay Hills - Yolo County
9. Cargo Muchacho Mountains - Imperial County
10. Carson Range - Sierra Nevada (into NV)
11. Cascade Range - British Columbia to N California
12. Casmalia Hills - Santa Barbara County
13. Castle Mountains - San Bernardino County (into NV)
14. Catherdral Range - Yosemite
15. Chalk Buttes - Kings County
16. Chalk Hills - Woodland Hills (San Fernando Valley)
17. Chalk Mountains - Humboldt County
18. Chemehuevi Mountains - south of Needles
19. Chino Hills - see Carbon Canyon Road (SR 142)
20. Chocolate Mountains - east of Salton Sea
21. Cholame Hills - SE Monterey County
22. Chowchilla Mountains - Mariposa County
23. Chuckwalla Mountains - Riverside County (between deserts)
24. Ciervo Hills - Fresno County
25. Clark Mountain Range - Mojave Desert (near Mountain Pass)
26. Clark Range - Yosemite NP
27. Clear Lake Hills - Modoc County
28. Clipper Mountains - Mojave Trails National Monument
29. Coast Range - part of the Pacific Coast Ranges
30. Colton Hills - Mojave Desert
31. Confidence Hills - southern Inyo County (Mojave Desert)
32. Coppersmith Hills - Lassen County
33. Coso Range - south of Owens Lake
34. Cottonwood Mountains - Inyo County
35. Cottonwood Mountains - Lassen County
36. Cottonwood Mountains - Riverside County
37. Coxcomb Mountains - eastern Riverside County
38. Coyote Hills - Alameda County
39. Coyote Hills - Plumas County
40. Coyote Mountains - San Diego & Imperial Counties
41. Crafton Hills - near Yucaipa
42. Crystal Hills - southern Death Valley NP
43. Crystal Mountains - Sierra Nevada (Desolation Wilderness)
44. Cuyamaca Mountains - San Diego County (Peninsular Range)