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Fullerton Loop



11.2 mile 18.1 kilometer loop
70% Singletrack


Ascent: 669' 204 m
Descent: -679' -207 m
High: 473' 144 m
Low: 165' 50 m


Avg Grade: 2% (1°)
Max Grade: 11% (6°)


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Map Key

Popular and fun route "behind the scenes" around the City of Fullerton.

Darren Rector

Electric Mountain Bikes Allowed

Features -none-

Family Friendly Juanita Cooke Trail and Laguna Lake are both very popular for kids and families.

No restrictions. Sections may be closed immediately after rainfall. Somewhere around 20 or so road crossings. Park at the Courthouse and head northward to go clockwise around the Loop.


A very easy 11+ mile loop right around downtown Fullerton with lots of variation. The loop flows clockwise and contains bridal trail and railroad-adjacent sections, true singletrack, a few steep and rutty climbs, lots of "extra credit", fast downhills, scenic vistas and even a shady lakeside section.

Need to Know

There are many junctions that are not marked specifically, so it helps to study the route via google earth before you hit it the first time. It is easy to miss some of the turns if you are unfamiliar with the route. Use the MTB Project mobile app to help follow the route. Elevation gain on this one is closer to 1015 feet rather than the listed 693 feet.


Park at the Courthouse and hit the Bridal Trail, then head north to Hiltscher Park Trail, across Euclid past Sunny Hills HS along the tracks. From there, it's a long steady climb through Grisson Park to Tree Park.

Hop back on Rosecrans Ave for about a mile, then turn eastward over many climbs and drops on Horse Trail, across Gilbert and back to Euclid via the Nora Kuttner Trail.

Pass Laguna Lake with a scenic respite, then back to the bridal trail southward to the train tracks. Go over the small dam on the Brea Dam Trail and down along the golf course, under Bastanchury Road, through the wilderness and over Brea Dam, down to Harbor Blvd. and back to the Courthouse. Simple as that.

History & Background

The Juanita Cook trail was originally the route of the Pacific Electric Railway "Red Car" line to Fullerton. The western portions surmount West Coyote Hills.


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May 26, 2020
Alex Guerrero
May 24, 2020
Kat Bella
May 17, 2020
Levi Chapman
Full loop finally 11.2mi — 1h 50m
May 16, 2020
Josh Villbrandt
May 10, 2020
Levi Chapman
Our dumbass friend Kevin had a flat from trying to jump curbs like a hero
May 9, 2020
21mi — 4h 33m
May 8, 2020
David Nguyen
May 7, 2020
Chris Gro

Trail Ratings

  3.9 from 111 votes


in Fullerton


  3.9 from 111 votes
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in California


2,445 Views Last Month
63,539 Since Jul 3, 2013



Full Trail Guide for Fullerton Loop.
Sep 23, 2018 near Fullerton, CA
Nov 6, 2016 near Fullerton, CA
Peaceful morning
Nov 6, 2016 near Fullerton, CA
Under the bridge.
Nov 6, 2016 near Fullerton, CA
Bridge over train tracks.
Nov 6, 2016 near Fullerton, CA
And, go! The usual starting point, at the Courthouse parking lot. Easy access, flat grade, wide bridal trail which accommodates lots of walkers etc. Head north from here.
Jul 3, 2013 near Fullerton, CA

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