California's Mountain Regions: No Single Mileage Figure Exists

There is no single defined mileage for "the California mountain region" because California contains multiple distinct mountain ranges covering vast and varied terrain.

Major Mountain Systems

• Sierra Nevada – 400+ miles long, includes Mount Whitney (14,505 ft), Yosemite, Sequoia/Kings Canyon
• Cascade Range – Northern California (Mount Shasta, Lassen Peak)
• Coast Ranges – Running parallel to the Pacific coast
• Transverse Ranges – East-west ranges near Los Angeles (San Gabriels, San Bernardinos)
• Peninsular Ranges – Extending into Baja California
• Klamath Mountains – Northwest corner
• White Mountains, Inyo Mountains, Sweetwater Mountains – East of Sierra Nevada

By the Numbers

• Mountains cover ~25% of California's land area (~40,000 sq mi)
• Over 200 peaks exceed 10,000 ft
• Dozens of wilderness areas, national parks, and forests

If you need mileage for a specific range, trail, or route (e.g., Pacific Crest Trail: ~1,700 mi in CA; Sierra Nevada length: ~400 mi), please specify. "The California mountain region" is not an officially bounded geographic unit with a single linear measurement.