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Fullerton Loop

 3.7 (78)

11.0 Miles 17.7 Kilometers



693' 211 m


-699' -213 m



Avg Grade (1°)


Max Grade (7°)

478' 146 m


162' 49 m



All Clear 23 days ago
Dry 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


Jul 26, 2018
Alan Corcoran
Waited until 6pm temps in high 80s 10.6mi — 1h 17m
Jul 25, 2018
Robert Caulfield
Jul 19, 2018
Robert Caulfield
Jul 14, 2018
Phil S
Jul 7, 2018
Rhonda Riola
Didn’t know the route so the ride ended up being very short 5mi
Jun 30, 2018
rafael jimenez
2nd time around
Jun 19, 2018
chang lee
Jun 11, 2018
Jonathan Kang

Trail Ratings

  3.7 from 78 votes


in Fullerton


  3.7 from 78 votes
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in Fullerton


in California


1,055 Views Last Month
43,243 Since Jul 3, 2013
Easy/Intermediate Easy/Intermediate

i love the workout and only one i know of which has a few jumps (near the golf course trail) which are fun!! Nov 20, 2017
I lost a NiteRider Lumina Micro 750 bike light sometime between 1/28-1/30. If anyone found it or has any info I would greatly appreciate your help! Thank you! Jan 30, 2018
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

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