Ontario Ridge Loop
Quick Facts
- Time: 2-3 hours
- Distance: 2.8 miles loop
- Elevation: 690' (600' in first 1.3 miles)
- Difficulty: Strenuous with technical descents
- Terrain: Steep, unmaintained trail
- Dogs: Allowed on leash
- Parking: El Portal Drive or Cave Landing Road
- Best Time: Early morning or late afternoon
Trail Challenge
Starting from a residential area at El Portal Drive (which often confuses newcomers as it looks like a private driveway), the trail immediately tests hikers with a steep ascent. The unmaintained route shows significant erosion on its eastern half - this isn't just steep, it's technical. The ridge's elevation gain is concentrated in the first mile and a half, rewarding effort with some of the most dramatic coastal views in the area.
Notable Features
The trail has earned local fame for two distinct features:
- Hilltop swings nestled under oak trees near the cell towers
- "Booty hill" is a notoriously steep descent toward Pirate's Cove that makes many hikers appreciate trekking poles
Critical Trail Sections
- Initial Climb
- Sharp ascent from El Portal Drive
- Watch for Goat Trail junction — do not take this short, steep side trail
- Several steep pushes alternating with brief flat sections under oaks
- Ridge Top
- Pass low cell towers kept close to the hillside
- Popular swing area offers break point and photo opportunity
- Views span from San Luis Bay to Shell Beach
- Booty Hill Descent
- Most technical section of trail
- Slippery even in dry conditions
- Tell people there's no shame in pausing to "take in the view"
- Dramatic ocean panorama in evening light
- Return Loop
- Easy grade along Cave Landing Road
- Pleasant walkway adjacent to Bluff Drive
- Good chance for group conversation
- Returns to El Portal Drive
Weather Considerations
The trail sits exposed to coastal weather:
- Morning fog common in spring/early summer
- September brings hottest conditions
- Extra water needed above 70°F
- Trail becomes particularly challenging after rains
Photos by Joe Gremillion