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We enjoyed our hike today but there was a lot of ice and snow on the trail. Crampons would have been very helpful.

Solid hike for spring. Definitely bring micro spikes or yak tracks as the majority of the trail is covered in either ice or a few inches of snow. No need for snow shoes in my opinion.

Parking is pretty limited. We parked next to the entrance (it said violators would be towed), but didn’t have any issues. Others were parked in the area without problems as well.

Happy hiking!

4 days ago

Awesome hike! Great views, great workout !

Trail was snow packed, footing was good with microspikes. Probably could have gotten away with just boots, but the extra traction was nice on the uphill climb.

Was an enjoyable hike; I’m sure it’s even better when the lake isn’t frozen.

Parking is kind of sketchy, but no problem finding a spot.

Great hike, would have given it five stars if there were not so many road crossings and so close to the road.

Coil treads recommended for winter hike to reach the top

We took bear canyon up which was longer than shadow or fern but had some nice pine covered areas. The last summit up to the peak was pretty challenging as it was very steep and straight up. Took my chihuahua and he did great. Once at Bear peak the view is unbelievable!We took shadow canyon down as others said fern canyon was too icy and slippery without micro spikes. Shadow was so rocky not very diverse terrain but not slippery. Somehow got lost connecting back to Mesa trail after shadow and hiked an extra couple miles, next time I’ll take a map. It’s easy to hike south boulder peak from bear and south boulder peak (not bear as I was told) is the actual highest peak in Boulder, maybe next time. Overall a great hike!

Icy in parts, but beautiful overall!

Awesome views and a lake. Did it today with a ton of snow on a windy day with snow bursts. Wasn't too bad, it was nice having the whole trail to ourselves! We did it without snowshoes (brought along spikes but didn't need them) and we were fine. There were a few spots where our feet sunk through the snow up to our knees, but walking a few feet out on the lake was cool.

Great hike but extremely difficult without spikes in winter conditions. If you do this during the winter, come prepared.

15 days ago

Slightly icy in the beginning and towards the top today. Temperature was very warm 50F+ with the sun beaming down I had only a long sleeve on the whole time. Coming down the other side there was a ton of packed snow and ice. Would have been quite a bit more difficult without crampons. Try and get there pretty early as it can get pretty packed at the top later in the day.

3/2/18- I was really impressed with this trail. I normally shy away from trails so close to the city, because there’s just too many people. But today was surprisingly mellow. Great views of the city, then on the other side you have great views of the mountains (will post pics). A few things:
1) We had to go up Gregory and down Flagstaff (reverse direction from map) because I couldn’t find the flagstaff trailhead. The trailhead is actually on the main road, across from the stop sign. Turn into the little parking area, then walk back down to the entrance stop sign. You’ll see the trailhead there. Gregory’s trailhead is by the roundabout (opposite end).
2) That said! The most icy stretch is on the Gregory Canyon trail. This worked for us because I prefer to go up the ice patches then down on solid ground. So if that is you, go clockwise on the trail!! Very brief stretches of ice, and some parts are fairly steep. But I made it fine with regular hiking boots. Flagstaff was dry, just be prepared for mud.

Great hike on a very cold morning. Couple of steep inclines along with the view will take your breathe away, both fugitively and literally. Then again first time on a steep incline on snow snowshoes, but I will do better next time. I'll also bring my pup next time... Go early, the crowds build quickly.

Hiked up about two weeks ago, fun hike. It was pretty icy attempting to climb up to the cave but still doable. Once you get to the top the cave is fenced but you can look inside.

On a clear day the views at the top are stunning! Took about 4 hours RT with a 30 min break at the top, so it makes for a perfect day hike from Denver. Overall a steady uphill climb but frequent places to stop and take a break. Trail is clearly marked as well. The loop back down is incredibly icy and shaded, so spikes/traction are a plus.

on Green Mountain Loop

28 days ago

Gregory Canyon is in mostly good shape. Yak tracks helped with a few of the icy areas. Saddle Rock on the way down thought was steep with lots of ice and snow pack. Worst areas are at the top and near the ladder. I would not recommend trying Saddle Rock with just sneakers or anything without a lot of traction.

1 month ago

great hiking definitely hard

1 month ago

One of my favorite trails to hike. Fair amount of snow still, spikes aren't a requirement, but they would definitely help on the walk down. Not usually busy at all during the week, and the summit is well worth the hike up.

I hiked this on 2/15. The first 3/4 mike was on the road. The test was trail. It snowed all day an even though my tracks were covered in snow it was relatively easy to find the trail in the trees. The lake was nothing spectacular. Lots of flat white and wind. The trail however was really beautiful. Snow shoes made it easier but micro spikes would have worked.

1 month ago

So much variety in the beauty of the land

Great for snow shoeing ! Had a great time on this very busy trail!

Tough climb, great hike. Beautiful views above the Flatirons. Microspikes would’ve been helpful on way down, but not necessary.

1 month ago

Hiked up here two days ago amazing views saw some whitetail later in the day! The trail was a little muddy and icy which was expected! Great hike!

In my opinion, this is the best hike directly in boulder. Not too easy, not too hard, easy access, not overly crowded (the day I went), just a great hike. I used microspikes for about 30% of the trail and was definitely glad I had them, but I saw other people getting by without them.

Fun hike today 2/03, snowshoes not really needed as the trail is well travelled. The dirt road up is getting more challenging by the day, there was a stuck 4Runner and Xterra on the way out. Made it all the way to the creek crossing with a 4WD Honda Pilot and some momentum without getting stuck though, so it's still possible. Well worth the trip!

Used the trail today (1-26). For the foreseeable future use your snow shoes. Fun hike. Will hike it in the spring to see how different it is.

1 month ago

This is a nice hike, but get there early! It’s very popular. Also, do not drive and park past the end of the paved road unless you have 4WD. There were some very dangerous parking jobs yesterday as a result of sedans attempting to go further than they should. There wasn’t too much snow but enough ice to need spikes for the hike.

Note there are 3 bridges you should expect to cross. A short distance after the first bridge there is a fork, but no signs. Stay to the right to keep with the lost lake trail. If you start seeing old cabins you’ve made a wrong turn.

1 month ago

Icey in spots!

1 month ago

This is a very pretty hike - great openings to views - not too crowded if you go early. Good to have microspikes as there are some icy areas

1 month ago

Really fast and easy trail. Pretty but as with many trails go early before the trail gets crowded.

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