Grindstone Quarry Trail [CLOSED] is a 2.8 mile lightly trafficked out and back trail located near Boulder, Colorado that features beautiful wild flowers and is good for all skill levels. The trail is primarily used for hiking and running.
LONG-TERM CLOSURE: As of February 2021 this area is closed due to damage. For more information, please visit https://www.bouldercounty.org/open-space/parks-and-trails/heil-valley-ranch/
November 8, 2020Wanted to get a quick hike after the Bronco game. Got there at 3:45 as the gate was being locked. Big sign saying closed for wild fires. Don't know if it's fully closed or not.
September 28, 2020Got of work early so decided to go for a short hike/run. this was the perfect distance to get in and out quickly. It was not very crowded at all around 4pm on Monday. Saw one person on my way out and two on the way back. Will definitely do again! My only complaint is that it is not dog friendly.
September 17, 2020Peaceful and enjoyable jog!!!
September 14, 2020August 14, 2020August 10, 2020Easy hike. FYI no dogs allowed.
July 11, 2020VERY easy hike if you're looking for a walk. the top isnt anything to gauk at but it's very cool! no one up here today
June 22, 2020Short hike but very beautiful
June 20, 2020Nice, easy hike even for kids. It is an out-and-back trail that is all uphill on the way out, but not very steep. Saw several deer and turkeys right off the trail. Nice views of Heil Valley from the quarry remains at the top.
May 27, 2020It was a nice hike, but the trail was shorter than said and was slightly anticlimactic. Very pretty views though and a good trail!
May 26, 2020I would say this trail should be rated as easy, not moderate. Not much incline and nothing technical. It was a beautiful hike, some wildflowers are starting to bloom. I went in the early evening (around 6pm) and there was hardly anyone there. Ran into a couple of friendly horseback riders. Can’t wait to come back
May 10, 2020Wasn’t paying attention and missed the turnoff to the end/top and ended up at the other parking lot lol
February 9, 2020
First to ReviewCompletely snow covered on 2/9, no ice or mud. Saw some folks with snowshoes; we got by with spikes, which weren't even really needed. Some forestry equipment visible along the way. For all the comments on other trails in HVR: the trail closures are only Monday - Friday until 2/28.
October 3, 2020September 12, 2020September 1, 2020August 30, 2020July 27, 2020July 20, 2020July 19, 2020July 17, 2020July 12, 2020July 9, 2020July 7, 2020July 4, 2020June 23, 2020June 21, 2020June 15, 2020June 13, 2020June 10, 2020
