Los Angeles River bicycle path
The Los Angeles River bicycle path is a Class I bicycle and pedestrian path in the greater Los Angeles area running north/east along the Los Angeles River through Griffith Park in an area known as the Glendale Narrows. The 7.4 mile section of bikeway through the Glendale Narrows is known as the Elysian Valley Bicycle & Pedestrian Path. The bike path also runs from the city of Vernon to Long Beach, California. This section is referred to as the Los Angeles River Bikeway.
Following the Los Angeles Flood of 1938, concrete banks were created as a flood control measure for nearly all the length of the river, making it essentially navigable by bicycle to its end, where it empties into the San Pedro Bay in Long Beach. In recent years, the Friends of the Los Angeles River, a local civic and environmental group, have attempted to restore portions of the river as parkland in a manner that includes and encourages bicycle and pedestrian traffic, efforts realized in part as local Congressman Brad Sherman secured $460,000 in federal funds to extend the path north in the Sherman Oaks area.
The Los Angeles River Revitalization Corporation (LARRC, LA River Corp) is campaigning for Greenway 2020, the completion of bike and walk paths for the entire 51-mile river by the year 2020.
Long Beach—Vernon section
The Los Angeles River Bikeway, also known as LARIO, is the longest completed section of the bicycle/pedestrian path. It runs from the Shoreline Pedestrian Bikepath at the river's mouth in Long Beach, upstream to the industrial area southeast of Downtown Los Angeles, at Atlantic Boulevard in Vernon. 
In Long Beach, the bike path runs on the east side of the river channel. When the path intersects with Imperial Highway, it crosses the LA River on the road bridge and continues north on along the west side of the LA River to Vernon.  The path on the east side continues under the bridge to the confluence with the Rio Hondo, becoming the Rio Hondo Bicycle Path heading northeast to the Whittier Narrows Recreation Area. 
Mileage markers are painted on the pavement and signs are posted at regular intervals detailing upcoming city streets. Parking can be found at Hollydale Park in South Gate,  Ralph C. Dills Park in Paramount,  and DeForest Park in Long Beach.  Other access in Long Beach includes several street crossings of the river, including those of Pacific Coast Highway, Willow Street, Wardlow Road, and Del Amo Boulevard.
Glendale Narrows Elysian Valley section
The second section, the Glendale Narrows Elysian Valley Bicycle Path and pedestrian walkway, runs alongside the L.A. River for 7.4 miles (11.9 km) from the border of Burbank, California & Glendale, California at Victory Blvd and Riverside Drive downstream through the Glendale Narrows to Egret Park in Elysian Valley. It runs through Glendale, Griffith Park, Los Feliz, Atwater Village and Elysian Valley.
There are numerous entry points and parks along it, including Rio de Los Angeles State Park, Griffith Park, Egret Park, Oso Park, Steelhead Park, Riverdale Mini-Park, Elysian Valley Gateway Park, Marsh Park, Rattlesnake Park, Crystal Park, and Sunnynook River Park. The Glendale Narrows Riverwalk, a separate multi-use (walk/bike) path, is across the river along the northern bank in the city of Glendale.   The non-vehicular Garden Bridge project over the Glendale Narrows will connect the Glendale Narrows Elysian Valley Bicycle Path, Griffith Park, and Los Angeles − with the Glendale Narrows Riverwalk and city of Glendale. 
- San Fernando Valley
In the San Fernando Valley there are several other non-connected sections.
- Arroyo Seco
- Browns Creek
- Compton Creek
The Compton Creek Bike Path is in Compton, along the east bank of two sections of Compton Creek, a tributary of the lower Los Angeles River. The northern section of the path is a paved trail extending from El Segundo Boulevard south through residential neighborhoods to Greenleaf Boulevard. An equestrian trail runs along the west bank of the creek.
A shorter section of paved trail exists farther south along the creek, but it is separated by the LA Metro Blue Line tracks, the Gardena Freeway, and the east fork of Compton Creek. Access to this southern segment is only at a few large streets, and it ends at Del Amo Boulevard north of the confluence of Compton Creek and the Los Angeles River.
- Dominguez Channel
The Dominguez Channel Bicycle Path/Laguna Dominguez Bicycle Trail is along a 2.8 miles (4.5 km) section of the Upper Dominguez Channel, a 15.7 miles (25.3 km) long channelized stream west of the lower Los Angeles River in southern Los Angeles County. It runs between the community of Alondra Park near El Camino College and Hawthorne near the Hawthorne Airport.  It is a project of the city of Hawthorne's Dominguez Enhancement and Engagement Project (D.E.E.P)  It has numerous mid-block crossings with cross walk navigation, and offers good pedestrian access.  Periodic mile markers painted on the pavement indicating distances upstream from its mouth at the Port of Los Angeles. 
On July 23, 2013 the nonprofit group River LA, formerly known as Los Angeles River Revitalization Corp, announced a goal of completing a continuous 51-mile greenway and bike path along the river by the end of the decade. The path is envisioned to be the central focus of a linear recreational park as well as providing an alternative transportation path through Los Angeles. The announcement by the nonprofit group precedes the expected August 30 release of a feasibility study being prepared by the U.S. Army Corps of Engineers. The Corps have the ultimate decision-making power over the river and it future revitalization.
- The City of Los Angeles.gov: Visit the LA River—Los Angeles River Archived 2015-07-27 at the Wayback Machine., with map of all current LA River greenway paths and trails . accessed 3.13.2016.
- Los Angeles River Revitalization Corporation (LA River Corp): Greenway 2020 website Archived 2016-03-14 at the Wayback Machine.
- KCET.org: "L.A. River Excursion: Bicycle Journey to Long Beach", 22 June 2012.
- Hollydale Park, 5400 Monroe Avenue, South Gate, California.
- Ralph C. Dills Park, 6500 San Juan Street, Paramount, California.
- DeForest Park, 6255 DeForest Avenue, Long Beach, California.
- "Archived copy". Archived from the original on 2015-07-27. Retrieved 2015-07-29.
- National Recreation Trail Database: Trail details of the Los Angeles River Trail (Glendale Narrows greenway/bike path) . accessed 3.13.2016.
- NortheastTrees.org: The Glendale Narrows Riverwalk, with adjacent LA River images
- City of Glendale: The Glendale Narrows Riverwalk
- Los Angeles Times.com: "Bridge between Glendale Narrows, Griffith Park moves forward", by Arin Mikailian, 10 March 2015.
- KCET,org: "New Greenway Opens at L.A. River's Headwaters in Canoga Park", 15 July 2014.
- Streetsblog Los Angeles, Eyes on the Street: "Ribbon-Cutting for New West SFV L.A. River Bike Path", 28 August 2014.
- KCET.org: "North Valleyheart Riverwalk Greens the Way in Studio City", 17 June 2014.
- Friends / Amigos of Dominguez Watershed: The Dominguez Channel bike path, current and proposed sections.
- Weekend Sherpa blog: The Laguna Dominguez Bike Trail
- L.A. Creek Freak blog: History of Dominguez Channel
- Christopher Hawthorne (2013-07-23). "Ambitious goal for L.A. River: Continuous 51-mile path by 2020". Los Angeles Times. Retrieved 2013-07-25.
- "Frank Gehry's controversial L.A. River plan gets cautious, low-key rollout". Los Angeles Times. 2016-06-18. ISSN 0458-3035. Retrieved 2017-08-01.
- Christopher Hawthorne (2013-07-24). "L.A. River advocates wait for watershed Army Corps study". Los Angeles Times. Retrieved 2013-07-25.
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