Fullerton Loop Bike Trail

If anyone finds a set of keys on the loop please let us know. A member of our group lost his key ring last night with car keys house key ect 3÷9÷16
Thanks!!!

The Fullerton Loop is a great bike trail for intermediate riders. There is lots of different terrain here and also some good uphill climbs and downhill ascends. The courthouse is the main start locations and is very popular to the local enthusiasts.

Great ride! 12 miles with uphills and downhills keeping it interesting and fresh. Not super easy but not super hard.

Awesome 12 – 13 mile bike trail! Great uphills and drops. Did this trail many times… Until I broke my collar bone during one of the drops in 2010.
Would recommend this trail.
Have fun. Use a camelback.
Wear a helmet!!!

Awesome bike trail! I ride here multiple times a week. The perfect escape without having to leave the city. Just watch out for runners and walkers coming and going in both directions. If you get out here early enough you can avoid the big crowds. There aren’t many trails like this left in Orange County, there is a lake with a lot of beautiful scenery. The perfect mixture of hills and options to make your own route. Just be mindful to others.

We visited on a Saturday morning and it had a fair amount of traffic – in both directions, though the better part of it was flowing clockwise. I’d rate clockwise as an easy trail – it has a few short but fairly steep climbs but as a whole, the main parts of single (double/​triplewide) track and pavement are mild and beginner friendly.
It’s a fun loop if you want to get out for some fresh air and exercise but if you’re looking for legit MTB trails, keep looking.

Some steep short uphills to climb and flowy trails. Fantastic beginner loop and lots of areas to regroup and benches/​dirt spots to take your scenic ridge picture. Hikers have the right of way– so be kind, thoughtful, and courteous. Some gravel grabber sections if you ride the summit house «extra credit» portion of the loop– just twerk and shake your tail feather a bit to keep traction. Most enjoyable ride! (No jumps, no need for armor or full helmet — this is not that kind of loop– go to summit or skyline if looking for Adrenaline) cheers!

This is a nice trail for mountain biking, met with some people in the trail the first time I rode here, it made the ride a lot better since I didn’t know the trails or which way to go. Overall had fun and looking to ride more trails!

Great trail for beginners. My brother and I went there for the first time and it was great. Beautiful scenery, challenging uphill sections and fun downhill slopes. Plenty of parking at the courthouse. Ended up getting a flat and had to walk all the way back to the car. Other riders were friendly and offered a tire pump but I didn’t have a spare. Next time I’ll definitely bring a spare so we can finish the trail and a map of the loop because there’s so many other trails. Overall fun experience!

The Fullerton Loop is one of my favorite places to ride. It provides enough climbing and downhill activity, and is a great after work ride. The whole loop is about 11 miles and takes you through various parks in the city, as well as a jaunt along a golf course. It’s a trail that is popular amongst joggers, hikers, bikers and equestrians, so be mindful when riding this loop.
Check out the garmin on this site below; offers complete directions of the course.

Wasn’t really what we expected. We were expecting let’s of climbing and hills. Total opposite.

FDL «Fullerton Death Loop» is my weekday quicky trail ride to bust a sweat and spin the nobbies on dirt. I wouldn’t consider this mountain biking but it’s better then nothing, why 4 stars because it’s accessible to me and it’s 11 miles of training. It’s great for beginners and hell even a good place to take the little shredders.

Tried to attempt this with a hybrid bike, and I don’t suggest it. There’s a stretch of the trail that my bike was not able to do that had a bunch of rocks and ditches in the ground that my bike just couldn’t take. Other than that one stretch the trail was pretty fun. Not too tiring considering I don’t exercise — like ever, so if you are in shape it should be extremely easy.
To do the complete loop you’ll need some type of map on your phone as reference because there are a lot of forks in the trail with no information as to which way to go. The full loop took us a couple of hours to complete. Several steep inclines and descents.
A lot of pretty scenery considering you are just in Fullerton, and the trail is not too busy, would definitely do this trail again.

Love coming here for a bike ride or a long run. Feels like I’m out in the middle of nowhere in some areas of the loop.

I just had my first mountain biking experience here! Most of the trail is pretty easy and flat so it’s nice for beginners. It’s pretty dusty, especially if you’re riding behind other people so be prepared for that. I was surprised that a lot of this ride actually included residential and street areas, but that made it easier.
The uphills killed me! Most of the hills are small, but there are a couple bigger ones, which I had to walk. I loved the downhills, though… so fun! For my first time, they were a little scary to maneuver but I love the rush. Just be careful and ride within your limit.
The trail is about 14 miles total and loops back to the parking lot. Park in the lot for the Fullerton courthouse.

The reason I love the loop is because of all the options and short cuts. We do a lot of group rides here and depending on the skill level determines which route we take people. There are single track, fire road and city street all on same route.
I love riding uphill, and there are plenty of hills here to keep me busy. Im not so thrilled of going down hill.
Iam convinced this trail is haunted. I heard someone call my name loud and clear and nobody was around. You can google it and see for yourself.
If your looking to ride, Fullerton Bikes cordinates a ton of rides. Night rides are the best. We also have a FB group OCRR orange county rookie riders. We do a lot of group rides.
Just remember never ride alone, bring your helmet and lots of water.

This is a great place to ride/​hike and take in nature without having to actually leave the city.
I started mountain biking here a couple years ago (i guess more accurately called «trail riding» for the snooty bikers that insist on not calling this novice trail «mountain biking») anyway point being. I take my mountain bike here after work on weekdays and meet up with friends to ride. Its a good release/​getaway after a long workday and it doesn’t hurt that its good exercise. On top of that, fullerton has great places to eat nearby after a ride.
Yeah its an easy trail but it doesn’t mean it cant be challenging. My new goal is to finish the loop in under an hour. It is only boring if you let it be. Find the extra credit sections!
Here’s a TIP for mountain bikers out there:
If youre coming up on a slower rider/​hiker/​horse — DONT BOMB THEM. Announce that you’re coming, slow down if necessary, and give an acknowledgement when you’re going to pass.
Nothing like an arrogant ass that just bombs down on another peson and surprises/​scares the hell out of them.
Show some courtesty and maybe we won’t have such a bad rap with the people who share we share the trails with.

Came down for the weekend and rode three laps on my old playground (3^rd was night ride). I missed the warm weather (I now live on SF Bay Area)
Trail was dry as expected post summer, loose and sandy in some areas but widened and almost paved like in what used to be technical sections.
Does anyone still climb the power line (now with cell phone antennas) to the far left before the dam? This used to drop at the parking lot of what now the AAA office. The golf place closed the trail due to balls landing on the old trail.
Busy and crowded on Saturday morning, so I started late Sunday and stayed for a night run.
Fun as always, an urban playground for adults and kids alike.

Been riding here for years now and I enjoy the nice easy ride after work. Usually meet some friends and have a chat during the ride, takes a little over an hour, 10.5 miles or 11.5 miles if you do the Golf Course too. You can find a map online or just use Strava, but it’s not going to be easy if this is your first time here. Or just follow other bikers, join STR or some bike shops who organize rides here. And have a nice dinner and a beer after the ride with your friends, that’s what we do most of the time.

Funny that I lives in Fullerton for two years, but never knew of the full loop’s existence. Sure I rode bits of it, but never the whole thing. Boy was I missing out.
Having just returned to mountain biking, with some new gear, I am always looking for fun trails in the general area. I enjoy cross country single track riding. I am not the strongest climber, though I will climb when needed, and I am not flying down downhill sections. The Fullerton Loop really fits into the sweet spot of where I like to ride.
I would hesitate to call it a beginner ride, because there are a few steep sections, but if you are a bold beginner and are able to stay in control on steeper descents, then you should have no issues. More advanced riders can add slightly more technical sections, but there was nothing in the 8 mile loop (there are 3 distances) that was overly technical unless you really go searching for a hard line.
For most of the trail, there is a wider main trail and parallel single track sections that are more fun, but a lot narrower and a bit more rutted. Be aware that there are a lot of riders on the trail, and it is heavily used by hikers and runners as well.