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Routes
Hiking trails & Routes
United States
California
San Diego County

Otay Mountain Truck Trail

Hard

4.8

(4030)

16,041

hikers

Otay Mountain Truck Trail

07:42

24.9km

930m

Hiking

Hike the challenging 15.4-mile Otay Mountain Truck Trail for expansive views of the US-Mexico border, Tijuana, and San Diego Bay.

Last updated: February 26, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Otay Mountain Wilderness

Waypoints

A

Start point

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1

8.45 km

Otay Mountain Truck Trail

Highlight (Segment) • Trail

The Otay Mountain Truck Trail runs in both directions around Otay Mountain and can be used by 4WD vehicles, but is also a great trail to the summit.

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2

12.4 km

View from Otay Mountain

Highlight • Viewpoint

Otay Mountain is the tallest peak in the San Ysidro Mountains standing at 3,568 feet. There are a handful of old service roads that lead to the top that are …

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B

24.9 km

End point

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Way Types & Surfaces

Way Types

24.3 km

487 m

135 m

Surfaces

22.5 km

1.15 km

907 m

169 m

158 m

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Elevation

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (1,060 m)

Lowest point (220 m)

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Weather

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Today

Tuesday 2 June

23°C

13°C

0 %

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Max wind speed: 13.0 km/h

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This route was planned by komoot.

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Frequently Asked Questions

Where can I park to access the Otay Mountain Truck Trail?

The primary access point for the Otay Mountain Truck Trail is typically found at the eastern end of Otay Lakes Road, near the intersection with Wueste Road. There is usually ample space for parking along the roadside near the trailhead.

Is the Otay Mountain Truck Trail dog-friendly?

Yes, dogs are generally allowed on the Otay Mountain Truck Trail. However, as it is located within the Otay Mountain Wilderness, it's always best to keep your dog on a leash to protect local wildlife and ensure their safety, especially given the presence of Border Patrol activity and potential for off-road vehicles.

What is the best time of year to hike this trail?

The best time to hike is during the cooler months, from late fall through spring. Summers can be very hot due to the trail's extensive exposure and lack of shade. Winter can bring washouts, so check conditions after heavy rains. Clear days offer the most expansive views, but even on hazy or foggy days, you can often ascend above the marine layer for sunshine.

Do I need a permit or pay an entrance fee for the Otay Mountain Truck Trail?

No, there are typically no permits or entrance fees required to hike the Otay Mountain Truck Trail. It is part of the Otay Mountain Wilderness, which is managed for public access.

What should I know about hiking in the Otay Mountain Wilderness?

The Otay Mountain Wilderness is a significant ecological reserve, home to unique plant and animal species, including the endangered Quino checkerspot butterfly. The trail is largely exposed, so bring plenty of water and sun protection. You will also frequently encounter US Border Patrol agents, as the trail is near the US-Mexico border and used for surveillance.

What is the terrain like on the Otay Mountain Truck Trail?

The trail is predominantly a dirt and gravel road, which can be prone to washouts. You'll traverse rolling hills and chaparral-covered slopes, with some sections featuring steep canyon walls. It's largely exposed, offering little shade. While the main truck trail is generally well-maintained, some side trails offer more challenging, technical terrain.

What can I see along the route?

You'll be rewarded with sweeping panoramic views, including the international border with Mexico, the city of Tijuana, San Diego Bay, and other peaks like Jamul Mountains and Tecate Peak. On clear days, views extend to the Pacific Ocean. The route itself is named after the Otay Mountain Truck Trail and offers a fantastic View from Otay Mountain. You might also spot rare Tecate Cypress trees and the ruins of abandoned World War II bunkers.

Does the trail intersect other well-known paths?

Yes, the route primarily follows the Otay Mountain Truck Trail (98% of the route) but also passes through sections of the Monument 20 Road (6%) and the US Border Patrol Road (4%).

What should I pack for a hike on this trail, especially in summer?

Given the trail's exposure and lack of shade, especially in summer, it's crucial to pack ample water (more than you think you'll need), sun protection (hat, sunscreen, sunglasses), and appropriate layers. Sturdy hiking shoes are recommended for the varied terrain. A map or GPS device is also wise, as there are numerous side trails.

Is this trail suitable for beginners?

While sections of the main truck trail are considered moderate, the overall route to the summit is rated as 'difficult' due to significant elevation gains (over 3,000 feet) and its length (15.5 miles). Beginners might find the full trek challenging, but shorter out-and-back sections could be more manageable.

Are there any loop options for the Otay Mountain Truck Trail?

The primary route for the Otay Mountain Truck Trail is generally an out-and-back experience. While there are numerous side trails and offshoots, creating a true loop that encompasses the main highlights without significant backtracking or venturing onto less-maintained paths can be complex. Most hikers treat it as a linear route to the summit and back.

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