Entry No. 23 — the Santa Barbara file — filed under: hot spring
Big Caliente Hot Springs
Deep in the Santa Ynez backcountry, 115°F water pours out of a bluff into a primitive rock-and-concrete pool with diversion valves locals use to dial the temperature down — the Independent calls it a "more-than-welcome relaxation point" after miles of dusty fire road, with a smaller, muddier sibling (Little Caliente) 4.8 miles further north.
The story
Deep in the Santa Ynez backcountry of Los Padres National Forest, 115°F thermal mineral water pours directly out of a hillside bluff into a primitive concrete-and-rock tub. Near a forest station structure dating back to 1934, this isn't a manicured resort with plush robes and sparkling water; it's off-grid wilderness plumbing at its rawest.
What makes Big Caliente peculiar is its hands-on temperature regulation. Because 115°F water will roast you in short order, the tub features crude manual diversion valves and pipes right at the source. You turn the valves yourself to route scalding water away or mix in cooler stream water until the tub drops to human-tolerable soaking levels. If you want even more solitude and don't mind a dirtier soak, its smaller, muddier sibling—Little Caliente—lies another 4.8 miles further north.
Getting there is half the puzzle. You're traversing miles of rutted dirt fire roads like Romero-Camuesa and Agua Caliente Road, bumping past P-Bar Flat and Middle Santa Ynez campgrounds, and negotiating Santa Ynez River crossings. Wildfires and severe weather regularly trigger landslides that wash out the tracks, meaning you'll want to check forest service road gates before attempting the drive.
What it's like
Expect the sharp smell of sulfur and a rough ride for your suspension. Arriving at the clearing, you'll find a simple rock-and-concrete basin set against the slope. You'll likely need to clear out fallen leaves and work the manual PVC valves yourself to set the temperature before stepping in. Bring a high-clearance 4WD vehicle if the roads are open, carry a headlamp for late-afternoon soaks, and pack out every single bit of trash you bring.
The move: Drive as far up Romero-Camuesa Road as conditions allow, hike in past P-Bar Flat and Middle Santa Ynez campgrounds, soak while working the temperature valves yourselves, and time it for late afternoon so you're not hiking out in the dark.
- 📍 Santa Ynez backcountry, Los Padres National Forest
- 💸 $$
- ⚡ Low-key
- 🌗 Indoor or outdoor
Where: Trailhead via Romero-Camuesa Road, Los Padres National Forest, Santa Barbara, CA 93105 (approx. 34°32'21"N 119°33'53"W)
Hours: Added 2026-07-20 — confirm current hours before you go.
⚠ Seasonal or scheduled — always check before you go.
Pair it with
- Montecito Hot Springs — Compare this raw, backcountry forest pool with Montecito's hike-in stone ruin pools on the coastal side of the mountains.
- Westmont College Observatory — Trade backcountry dirt fire roads and sulfur steam for stargazing through a 24-inch Cassegrain telescope tucked on a quiet college campus.
- Santa Barbara Cemetery — Follow up a dusty mountain soak with a quiet coastal stroll among Old Hollywood graves on a bluff high above the Pacific.
Good to know
How hot is the water at Big Caliente Hot Springs?
The water emerges from the bluff at roughly 115°F, but manual diversion valves attached to the concrete pool allow you to temper the tub with cooler water.
Can you drive all the way to the hot spring?
When Romero-Camuesa and Agua Caliente roads are open, high-clearance 4WD vehicles can drive close to the site. However, rain washouts and landslides frequently prompt Forest Service gate closures, requiring visitors to hike or bike in.
Are there fees or reservations required?
No. Big Caliente is a primitive, unstaffed public soak on Los Padres National Forest land with no entry fees, attendants, or reservations.
What is the difference between Big Caliente and Little Caliente?
Little Caliente sits 4.8 miles further north down the trail and features smaller, shallower, and muddier pools that see fewer visitors than Big Caliente.
Plan a visit & invite your people →
Further reading: Wikipedia · independent.com · songsofthewilderness.com · alltrails.com · californiabeaches.com
last checked: 2026-07-20