San Diego County, California
2,375 hiking & walking trails · 57parks, recreation areas & campgrounds · 58 cities. Real OpenStreetMap + Recreation.gov data, with a free trail map for every listing.
About Hiking in San Diego County, California
San Diego County is home to 2,375 mapped hiking trails and 57 federal parks, campgrounds, and recreation areas spread across 58 cities. Trail data is sourced from OpenStreetMap contributors; park and campground info comes from Recreation.gov.
Looking for something specific? Search all trails in San Diego County or browse parks. Want to narrow further? Pick a city below to see only that city’s outdoor options.
Trails & Parks in San Diego County
Up to 257 pinpoints showing trail and park locations across the county.
Cities in San Diego County
Click any city to see trails and parks within it.
34 more cities in this county.
Sample Parks in San Diego County
Sample Trails in San Diego County
Curated Guides for San Diego County
Frequently Asked Questions
Are there hiking trails in San Diego County, California?
Yes — we have 2,375 mapped hiking and walking trails in San Diego County, California, sourced from OpenStreetMap. Browse the full list below, with distance, elevation, and difficulty for each.
What is the most difficult hiking trail in San Diego County, California?
Cat Crack Approach Trail near Poway is rated hard — the toughest classification among San Diego County, California's mapped trails.
What is the best hiking trail in San Diego County, California for families?
10 near Palomar Mountain is one of the best family picks in San Diego County, California — easy difficulty, short enough for kids and first-timers. See the full family hiking guide below for more options.
Is there a trail map for San Diego County, California?
Each of the 2,375 trails in San Diego County, California has its own page with an interactive map, GPS coordinates, and a link to view it on OpenStreetMap — no app or account needed.
What parks and recreation areas are in San Diego County, California?
San Diego County, California has 57 parks, recreation areas, and federal facilities in our index (9 classified as recreation areas). Each listing includes activities, photos where available, and directions.
Can I go camping in San Diego County, California?
Yes — 3 of San Diego County, California's parks have mapped campsites, from first-come sites to Recreation.gov reservations. The largest is BOULDER OAKS EQST with 33 sites. See the full campgrounds guide below for the ranked list.
Where can I find hiking trails and parks near San Diego County, California?
Browse all hiking trails, walking trails, parks, and campgrounds across California for more options beyond San Diego County, California.
Hiking guides for California
Statewide rankings and guides — useful context for San Diego County.
Photo: Joshua EarleThe 10 Longest Hiking Trails in California, Ranked
California's longest mapped hiking trails, ranked by distance with notes on what makes each route worth the commitment.
Photo: Sergei AkulichCalifornia's 10 Most Punishing Trails by Elevation Gain
Steep is hard. These are the ten California trails with the most total elevation gain — quad-burners earned by hard climbing.
Photo: Maddi BazzoccoThe Best Beginner-Friendly Hikes in California
Ten gentle, well-marked California trails perfect for first-time hikers, families, or recovery days.
Photo: Holly MandarichThe 10 Most Challenging Hikes in California
California's ten hardest hikes — expert difficulty, big mileage, or serious exposure. Reserved for experienced hikers.
Photo: Diego LozanoThe Best National Parks & Recreation Areas in California
Federal parks and recreation areas in California ranked by what they actually offer hikers and campers, not just popularity.
Photo: Joshua EarleBest Waterfall Hikes in California: 10 Trails to See Falls Up Close
California's best hikes to named waterfalls — from short family-friendly viewpoints to all-day cascade chasing.