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Routes
Hiking trails & Routes
United States
California
San Diego County
San Marcos

Discovery and South Lakes Loop

Moderate

3.0

(2)

96

hikers

Discovery and South Lakes Loop

02:29

8.67km

200m

Hiking

Hike the Discovery and South Lakes Loop for varied terrain, from gentle lakeside paths to challenging climbs with panoramic views.

Last updated: February 26, 2026

Waypoints

A

Start point

Parking

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1

6.72 km

San Elijo Hills Ocean View

Highlight • Viewpoint

A view of the Pacific Ocean from the San Elijo Hills.

Tip by

2

8.33 km

Discovery Lake and Trails

Highlight • Lake

Discovery Trail circumnavigates Discovery Lake, there is also a small park and community center. Hikes can also start from here to go up to peaks like Double Peak. The park …

Tip by

3

8.50 km

Discovery Trail

Highlight • Trail

The discovery trail loops around Discovery Lake and is a serene place to ride your bike. On a completely calm day, the mountains reflecting in the water make you feel like you're miles away from the city.

Tip by

B

8.67 km

End point

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Way Types & Surfaces

Way Types

5.12 km

3.29 km

269 m

Surfaces

2.42 km

2.37 km

1.67 km

976 m

950 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 (380 m)

Lowest point (190 m)

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Weather

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Today

Tuesday 26 May

18°C

14°C

11 %

Additional weather tips

Max wind speed: 18.0 km/h

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This route was planned by komoot.

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Frequently Asked Questions

Where can I park for the Discovery and South Lakes Loop?

Parking is generally available near both Discovery Lake and South Lake Park. For Discovery Lake, you can find parking at Lakeview Park, which is adjacent to the lake. For South Lake Park, there is parking available at the park itself. Both areas offer convenient access to the loop.

Is this trail suitable for families with children?

Yes, the primary loops around Discovery Lake and South Lake are very family-friendly. The Discovery Lake loop is an easy, paved 0.8-mile trail, suitable for strollers and wheelchairs. South Lake Park Trail is a 1.3-mile loop with gentle inclines, also considered kid-friendly. Both parks feature playgrounds and splash pads, making them great for families.

Is the Discovery and South Lakes Loop dog-friendly?

Yes, the trails around both Discovery Lake and South Lake are generally dog-friendly. Dogs are permitted but must be kept on a leash. Please remember to clean up after your pet to keep the trails enjoyable for everyone.

What is the difficulty level and terrain like on this route?

The difficulty varies significantly depending on which sections you choose. The loops around Discovery Lake and South Lake are mostly easy, with paved or well-maintained dirt paths. However, connecting these areas via the Double Peak Trail, which offers panoramic views including the San Elijo Hills Ocean View, involves a challenging ascent with steep, rocky, and potentially slippery sections. This part of the route is considered moderate to strenuous.

Are there any permits or entrance fees required for this trail?

No, there are no permits or entrance fees required to access the trails around Discovery Lake or South Lake Park in San Marcos, California. The parks and trails are open to the public free of charge.

What notable sights or viewpoints can I expect to see?

Along the route, you'll enjoy views of Discovery Lake and South Lake. If you venture onto the Double Peak Trail, you'll be rewarded with stunning panoramic views of the surrounding mountains, the coastline, and magnificent views of South Lake Park. On clear days, you might even see as far as Batiquitos Lagoon and Catalina Island from the summit.

What kind of wildlife might I encounter on the trail?

The area is rich in wildlife. Around Discovery Lake, you might spot various birds like California quails, orange-crowned warblers, and blue-billed ruddy ducks. South Lake is home to bass, bluegill, Western pond turtles, deer, and coyotes. Bird sounds are common along the trails.

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

The trails are enjoyable year-round, but spring and fall offer the most pleasant hiking conditions with milder temperatures. Summer can be hot, so it's best to start early in the morning. Winter hiking is generally mild, though some parts can be a bit buggy when it's hot, especially near South Lake.

Are there restrooms or other facilities available?

Yes, public restrooms are available near the Discovery Lake dam in Lakeview Park. The summit of Double Peak Park also has restrooms, picnic tables, and even a mini-amphitheater with a free telescope for enhanced viewing.

Does the trail intersect other well-known paths?

Yes, the route also passes through sections of the Cerro De Las Posas Ridgeline Trail and Bella Vita Way, integrating these paths into the overall loop experience.

Are there options for more challenging hikes along this route?

Absolutely. While the lake loops are easy, you can significantly increase the challenge by incorporating the Double Peak Trail. This route, accessible from Discovery Lake, involves a strenuous climb of approximately 1,000 feet over 4.3 miles, offering a rewarding workout and expansive views.

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