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Fullerton Loop

 3.7 (86)
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Map Key

11.2 Miles 18.1 Kilometers



669' 204 m


-679' -207 m



Avg Grade (1°)


Max Grade (6°)

473' 144 m


165' 50 m



All Clear 94 days ago
Dry: Sever rutting from rain run-off in some sections. History

Getting forecast...

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

Darren Rector

Dogs Leashed

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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Your Check-Ins


Jan 23, 2019
Hieu Nguyen
Dec 30, 2018
Hieu Nguyen
Dec 27, 2018
John Gump
fun evening ride. did with Wilson and ankerstar 11mi
Dec 22, 2018
Chris CB
Dec 15, 2018
Sherry Vong
Dec 8, 2018
Andrew Carranza
Dec 2, 2018
Daniel Chin
Nov 4, 2018
Phil S

Trail Ratings

  3.7 from 86 votes


in Fullerton


  3.7 from 86 votes
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in Fullerton


in California


1,128 Views Last Month
49,204 Since Jul 3, 2013
Easy/Intermediate Easy/Intermediate

No matter you skill level or conditioning, there is something about the loop that keeps you coming back. It's great interim cardio during the week to keep your wheels spinning and cardio up for the weekend warrior rides. Jul 14, 2018
Naro Chim
Signal Hill, CA
Naro Chim   Signal Hill, CA
For a beginner Mtn biker like myself this trail is perfect to practice on. The entire loop has a little bit of everything. I'm an avid runner and the hills still gave me a good workout. Sep 7, 2018
Scott F  
To whoever turned the manhole after the bridge into a small jump: thank you. You put a smile on my face. Strava recorded results that differ from the listed information: 1,000 ft of elevation gain with a max grade of 14%. As someone getting into shape the climbs kicked my butt, but in a good way. Not a ride full of features, but definitely a workout (at least for some of us). Oct 22, 2018

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