Explore the most popular trails in Boulder Reservoir Park with hand-curated trail maps and driving directions as well as detailed reviews and photos from hikers, campers and nature lovers like you.

trail running
1 month ago

The West side of this loop is pretty tough for running as it is on 51st street. This is especially true if you take the more southerly part of the trail system, because I made a wrong turn and went onto 119. Running off 119 means traversing fairly high brush in stretches that are inclined, which can be tough on knees and feet. It was also extremely windy, so I was running into a headwind in this stretch which was anything but a field day.

I was hoping to extend the loop by going into the Eagle and Sage trail, but the extreme winds really got to me and I didn't have the energy to do that.

The 51st street portion makes me downgrade this trail. It's ok on the dirt road part in the northwest and north side of the reservoir. However running along 119 was a nightmare. Next time I'll take the correct path on the southern end, and my rating may go up.

walking
4 months ago

great views of the mountains, pretty little lake. easy to walk, I usually take my dog and do 2 laps but sometimes I go alone and do 3 or 4 for fun. the path is pretty wide so don't need to worry too much about people like me that are just strolling around if you want to go faster. lots of benches to sit on and enjoy the scenery. my only complaint is the number of people that bag up there dogs waste and then leave the bags on the ground.

walking
5 months ago

Very relaxed walk with great views!
Just keep an eye out for snakes.

hiking
5 months ago

in the past we used this trail a lot. However, a couple of years ago, it started being patrolled daily by the city of Boulder animal control ticketing people for dogs swimming and being off leash. In the newspaper, they bragged of being there pretty much all of the time. It is under the control of the city of Boulder so those rules apply, and are very different from the Boulder County rules we were all following. it was just a convenient little county park. Too bad it became a highly - policed place to play with your dogs.

Don’t make the dummy mistake that I did and pay an entrance fee! Half the “trail” is a back dirt road, with little to no shoulder to walk on, the other half is trail, with lots of smaller trails that allow you to wander. Worth a visit, definitely a decent distance walk. Lots of prairie dogs and wild flowers along the way!

hiking
7 months ago

Dog owners please be cautious! Unfortunately last night our dog was bit by a rattlesnake in the tall grass around Coot Lake. We LOVE this area and go there 3-4 times a week and never had an issue until last night.

trail running
8 months ago

About half the loop is trail and the other half is dirt road. Only run this loop clockwise or you will have to pay an entrance fee at the marina; clockwise you enter the marina from the rear where there is no gate. Only recommended if you just need a run and don’t want to go far. There are so many better options within 10-15 mins of here.

walking
8 months ago

Nice trail. Great scenery.

Nice wide open space with lots of happy dogs and a lake. no elevation to speak of so not really a work-out, but certainly beautiful.

Boulder Reservoir does not let people in the front gate for free and especially not with dogs!! Tip: go the back way (clockwise) and it's a great, free waterside walk. They might lecture you if you take a dog on the south shore.

10 months ago

Nice pleasant hike with a lake and lots of happy dogs in it. Best during the week.

Started out OK, but there were a lot of dogs off leash and they really stressed my support dog, Sierra, out. I admit I was pretty high, so I'm not sure how she lost her support animal vest. But it really messed up the reset of the hike, The cops came as well because some of some hassle between a biker and a nude runner. They just bummed me out, bad vibes from the very start.
Oh I also lost my keys. So big buzzkill on the west side of the trail.

Nice hike on the east portion of the trail. Know that the west portion of the trail isn't really a trail and you must walk (or bike) on the side of the dirt road.

It was an okay walk. Almost half of it is on a dirt road with lots of vehicle, bike, and runner traffic. A lot of off leash dogs as well. Some nice views. Will choose a different 5 mile walk next time.

trail running
Sunday, January 07, 2018

Flat, but ok run. Started right before sunset...not good.

Thursday, January 04, 2018

Pretty spot, but the loop trail is under construction. Now a short out and back. Check construction status before going.

hiking
Sunday, October 15, 2017

Definitely a favorite spot to take our dogs off leash. Views are as beautiful. Usually a few people fishing and lots of other friendly dogs. If your dog likes to swim, he'll probably just ask you to leave him there and come back tomorrow...dock for jumping and loads of easy entry places.

hiking
Saturday, October 07, 2017

Beautiful sunset walk around Coot Lake with amazing views of the flatirons in the distance.

road biking
Thursday, September 14, 2017

Beautiful views for a quick morning bike ride

Saturday, August 12, 2017

Great easy hike and fishing trip for the family

walking
Friday, May 12, 2017

Friday, May 05, 2017

Wednesday, April 19, 2017

Beautiful views and easy terrain

walking
Friday, March 24, 2017

I need area to walk. Seeing all of the dogs with their owners made me want my own dog, but I enjoyed exploring this area on my own. I walked mostly around the reservoir, but was able to cut across part of the reservoir where the water had receded. It was quite a blast! At first I was walking across sand, and then I got to a long section of street mud and muck. I was barefoot in smiling the whole time! :D
In the middle of the week and before peak season, the area wasn't too busy. Just enough people to feel in touch, yet also with in my own little world. I would certainly come back here again, with higher hopes of being able to dunk my head under the waters!

walking
Sunday, March 05, 2017

Great view with plenty of room for pups to run and swim around.

on Coot Lake Trail

Thursday, October 27, 2016

Lake itself is quite lovely, and trail is convenient to Boulder and Longmont areas. Path is wide, smooth, and flat, appropriate for all ability levels and many uses. Very dog friendly - though almost felt like a dog park with so many present on a crowded Sunday afternoon.

walking
Thursday, October 27, 2016

Nice easy trail! Very dog friendly, I think I was the only one without a dog. Much better parking across the street.

Sunday, October 16, 2016

love that you can let dogs get into the water

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