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Hiking trails & Routes
United States
California
Los Angeles County
South Pasadena

Lower Arroyo Seco Trail

Easy

3.4

(29)

41

hikers

Lower Arroyo Seco Trail

01:20

5.10km

30m

Hiking

The Lower Arroyo Seco Trail offers a delightful urban escape, winding through a green corridor that feels far removed from city life. You'll experience a blend of Mediterranean chaparral and seasonal wildflowers, with the impressive historic Colorado Street Bridge looming overhead as a striking landmark. This easy 3.2-mile (5.1 km) hiking route, with just 114 feet (35 metres) of elevation gain, is perfect for a relaxed outing, taking about 1 hour and 19 minutes to complete.

Planning your visit is straightforward, as the trail is easily accessible within Pasadena. While much of the path is packed dirt, be prepared for potentially muddy sections after rain, and remember that exposed areas can get quite warm during summer. It's a popular spot for dog walkers, so you'll find it's a very dog-friendly trail, and parking is generally available near the trailheads.

What makes this trail truly special is its unique position as a "wildland-urban interface," offering a glimpse of nature coexisting with the bustling city. Beyond hiking, the Lower Arroyo Seco area is a natural preservation and cultural landmark, also hosting a casting pond for fly fishing and an archery range, adding to its diverse recreational appeal.

Last updated: June 9, 2026

Waypoints

A

Start point

Parking

Get Directions

1

300 m

Arroyo Seco

Highlight • River

The Arroyo Seco is a 25-mile seasonal stream, canyon, watershed, and cultural area. The watershed is one of the major streams that capture rainfall and stormwater in Pasadena. There are 22 miles of trails around "the Arroyo" that connect Angeles National Forest to South Pasadena.

Tip by

2

1.51 km

Lower Arroyo Park

Highlight • Rest Area

Lower Arroyo Park is 70 acres along the Arroyo Seco, a 25-mile seasonal river. The park features The Arroyo Seco Bike Path, water fountains, restrooms, bike racks, and a snack stand.

Tip by

B

5.10 km

End point

Parking

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Way Types & Surfaces

Way Types

5.09 km

Surfaces

4.97 km

124 m

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Elevation

Elevation

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Weather

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Today

Wednesday 15 July

36°C

18°C

0 %

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Max wind speed: 17.0 km/h

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Frequently Asked Questions

What is the terrain like on this trail?

The trail offers a diverse experience. You'll find largely flat and easy paths, suitable for leisurely walks or jogging. While some sections follow the concrete flood control channel of the Arroyo Seco river, secondary trails venture into more natural settings, winding through oak woodlands, coastal sage scrub, and riparian habitats. Expect minimal elevation changes throughout.

Is the Lower Arroyo Seco Trail suitable for beginners or families?

Yes, this trail is considered easy and largely flat, making it very suitable for beginners, leisurely walks, and families. Its gentle nature and diverse scenery provide an enjoyable outdoor experience for all skill levels.

What are the best times to hike this trail?

The trail can be enjoyed year-round, but it's advisable to hike in the morning or on cooler days, especially during warmer months, as some areas may not be well shaded. Spring and fall offer particularly pleasant temperatures and vibrant scenery.

Where can I park to access the trail?

Parking is available at various points around Lower Arroyo Park. Specific trailheads and parking areas can be found by checking local Pasadena city maps or the park's official website for the most current information.

Are dogs allowed on the Lower Arroyo Seco Trail?

Yes, dogs are generally permitted on the trail. However, they must be kept on a leash at all times to protect the local wildlife and ensure a pleasant experience for all visitors. Please remember to clean up after your pet.

Do I need a permit or is there an entrance fee for Lower Arroyo Park?

No, there are no permits required or entrance fees to access the Lower Arroyo Park or its trails. It is a public nature preserve, freely accessible for pedestrians and equestrians.

What notable features or points of interest will I see along the way?

You'll experience a blend of natural beauty and historic landmarks. The trail passes under impressive structures like the iconic Colorado Street Bridge and the 134 freeway bridges. Keep an eye out for the Bird Sanctuary, offering expansive vista views, and the tranquil Memorial Grove, surrounded by oak-wooded slopes. You'll also be walking alongside the Arroyo Seco river itself.

What kind of wildlife can I expect to see?

The steep canyon walls and diverse habitats of the Arroyo Seco support a rich variety of wildlife. It's a popular spot for bird-watching, and you might also spot various mammals, reptiles, and insects. The area is Pasadena's only officially designated nature preserve, making it a vital habitat.

Does this trail connect to other hiking paths?

Yes, the Lower Arroyo Seco Trail is part of a broader network. It includes sections of the Gabrielino Trail and serves as a passageway that links to trails in the Angeles National Forest. Additionally, the route also passes through sections of the California Mission Trail - stage 04 Mission San Gabriel Arcangel to Mission San Fernando, Rey de Espana and the Parker Mayberry Crossing.

Are there any specific regulations or restrictions to be aware of?

As Pasadena's only officially designated nature preserve, the Lower Arroyo Park has specific rules to maintain its natural integrity. The trail is accessible to pedestrians and equestrians only; bicycles and motor vehicles are not permitted, ensuring a peaceful experience. Always stay on marked trails and respect the wildlife.

What should I bring for a hike on this trail?

Given that some sections may not be well shaded, it's advisable to bring water, sunscreen, and a hat, especially on warmer days. Comfortable walking shoes are recommended for the varied terrain. Binoculars can enhance your bird-watching experience.

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