If you’re looking to summit the tallest peak in San Diego County, Hot Springs Mountain delivers a long, rewarding hike with big views and a true backcountry feel. This isn’t a casual stroll — it’s an endurance hike best tackled in cooler months, but the payoff makes it one of the most satisfying climbs in the region.
Below is everything you need to know before heading out.
Table of Contents
How to Get to Hot Springs Mountain
Hot Springs Mountain is located in eastern San Diego County, near Warner Springs, and sits on land managed by the Los Coyotes Indian Reservation. Because of this, a permit is required to hike here.
Trailhead Access (Most Common Route):
San Ysidro Trailhead (Los Coyotes Reservation)
Approximate Coordinates:
- Trailhead: 33.299° N, 116.563° W
- Summit: 33.303° N, 116.541° W
⚠️ Permit Required:
You must obtain a hiking permit from the Los Coyotes Band of Mission Indians before your hike. Permits are typically available online through their official website or social hiking platforms that partner with the reservation.
Parking Fees:
Parking is usually included with the permit, but always double-check current rules before you go. Rangers do check permits, and access without one can result in fines.
Important Notes:
- No services at the trailhead
- Cell service is limited or nonexistent
- Arrive early — this is a long day on the trail
Hot Springs Mountain Hike Stats
- Distance: ~10.2 miles round trip
- Elevation Gain: ~2,100 feet
- Peak Elevation: ~6,533 feet
- Difficulty: Strenuous
- Best Time to Hike: Late fall through early spring
This hike is all about steady climbing over distance rather than short, brutal elevation spikes. That said, the mileage combined with the elevation gain makes it a serious effort.
Overview of the Hike
Hot Springs Mountain is a classic out-and-back hike that rewards patience and pacing. The trail starts mellow, gradually climbs through forested terrain, and finishes with wide-open summit views that stretch across San Diego County.
Here are three key landmarks and points of interest you’ll encounter along the way.
1. San Ysidro Trailhead & Initial Forest Climb
The hike begins at the San Ysidro Trailhead, where you’ll immediately notice how different this terrain feels compared to coastal San Diego hikes. You’ll start climbing through shaded forest, with oak and pine trees lining much of the lower trail.
This section is a good warm-up — gradual elevation gain, well-defined trail, and cooler temperatures, especially in winter. Take advantage of the shade early, as later sections are more exposed.
2. Rolling Ridge Sections & Open Views
As you gain elevation, the trail transitions into long ridge sections with fewer trees and wider views. This is where the hike starts to feel longer, as the climbs become more sustained and shade becomes limited.
You’ll get sweeping views of the surrounding mountains and desert landscape, especially on clear days. This is a great place to pause, hydrate, and settle into a steady rhythm — the summit is still a ways off at this point.
3. Hot Springs Mountain Summit
The final push brings you to the summit of Hot Springs Mountain, the highest point in San Diego County. The summit area is relatively open and offers 360-degree views that make the long trek worthwhile.
On a clear day, you can see deep into Anza-Borrego Desert, across mountain ranges, and even toward the coast. The summit is marked and makes a great spot for a longer break before heading back down.
What to Know Before You Go
- Bring plenty of water: There are no reliable water sources on the trail.
- Start early: This is a long hike, and you’ll want daylight for the return.
- Check weather conditions: Snow and cold temps are possible in winter.
- Navigation: Download maps ahead of time — cell service is unreliable.
- Leave no trace: This is a sensitive area with permit access for a reason.
Is Hot Springs Mountain Worth It?
Absolutely — if you’re prepared.
Hot Springs Mountain isn’t flashy or crowded, but it’s one of the most rewarding hikes in San Diego County. It’s perfect for hikers training for big objectives, working through the San Diego 6 Pack of Peaks Challenge, or simply looking to experience a true mountain summit close to home.
If you’re willing to put in the miles, this hike delivers. No there aren’t hot springs here 😉
