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Great trail! Nice and steady incline all the way to the top. Hiked this 12/9, leave your snow shoes in the car, this hike is totally doable with just yaktraks

I really enjoyed this trail. I'm from florida, didn't need spikes uphill, buy used hiking sticks downhill.

beautiful easy hike

easy breeze hike. nice views.

on Three Mile Creek Trail

6 days ago

A gental rolling trail that crosses the creek in several places. This trail isn't overly crowded. No snowshoes needed. The lower section of the trail is dry or covered with a light power. The upper sections have snow but compacted. I am not sure the mileage is accurate. I recorded over 7.6 miles and didn't make it to the end or valley. I would think this trail would be spectacular in the fall due to the abundance of Aspens.

Icy in spots but clear path overall; wore traction going down. Beautiful trail

Great moderate hike. Not much snow today. took about 2 hours including a break at the top and I had a baby on my back. A great view once you get to the top and some nice aspens along the way....somebody even left a pre-rolled out there.

Only saw a few people in the distance on this one. not much traffic on Friday at 1pm.

*bonus*

Difficult & steep trail run, but well worth the efforts

Climbed 11/10/18 - Sanitas generally stays drier and more snow free compared to nearby mountains like Green or Bear which makes this a great mountain for a workout hike or trail run. Quick and easy. Always seems to be more crowed than Green or Bear. Views from the summit are only of Boulder and you cannot see anything west:(. Additionally the summit block is small and crowded which was an annoyance both times I climbed it. So this is a great workout mountain and is fairly fun but the views and solitude are lacking compared to neighboring mountains..

Did this 11/29/18. Fun hike that should probably be labeled as “moderate” in the winter. Used yak traks today and they were very necessary. It is a slog going straight up but the views are worth it!! We breezed down which helped. Trialhead VERY easy to miss as others have stated look for a light reflector sign across from the parking area. Lots of snow on the road to the trail head that a person in front of us got stuck in. Be careful and mindful driving up.

Not to bad of a winter trail
Some ice

Going counter clockwise on the trail was a bit difficult, the trail was tricky at times. Unfortunately I went on a cloudy day but if you are looking for a trail to get a sweat going this is a great one.

snowshoeing
12 days ago

This is a fabulous trail in any season Today's early morning snow shoeing found packed snow at start of trail with much deeper snow as elevation increased. I turned around once I entered the alpine terrain above tree line. There was only one other person on the trail this morning, so I basically had the trail to myself (and my dog).

hiking
12 days ago

Nov 21. some snow pack, but not at the top. great weather. my 4 girls loved it.

Snow-packed trail that was mostly protected by trees; the wind at the top was brutal in conjunction with the 15 degree temps. Traction wasn’t necessary, but I would bring them just in case.

Did this trail when first visiting the area..definitely was a little challenging on the way up! Was a great workout and the view at the top is awesome.

Short and steep, but great views at the top! Winds were a little crazy today, so didn’t spend too much time up top. Some icy spots on the trail that spikes may have been useful for, but managed just fine.

hiking
15 days ago

A good quick and easy hike, beautiful view at the top! Will definitely be back.

This was a great workout. The views are amazing. There is lots of stairs and boulders to go over. A bit missing and icy on the back loop going down.

hiking
20 days ago

The trail continues longer, but 6.25 miles will get you to the wilderness boundary marker and a treed saddle. Very satisfying climb and well maintained trail, 3 hours round trip. The written directions to the trailhead are rather poor, but just follow a map and you'll be fine. There is a sign pointing to the trailhead past the Meridian Campground, when you make a left off of the pavement. The last one mile is bumpy but not so washboarded that a regular car couldn't make it with care. Loved it at this time of year - only passed one other couple of hikers, and that was on the way back. No footprints past the two-mile mark, yet the snow is not a deterrent at this time of year.

Not the best trail for views, but great otherwise. No snowshoes needed on this outing, though microspikes are highly encouraged. Trail conditions were mixed, some dry stretches, some snowy and some icy. This trail would probably be best in fall when the aspens turn, or as a connector to other higher trails and summits in the area. We ultimately dubbed this "300 Crossings of 3 Mile Creek" as we crossed the creek more times than we could remember! Great day on trail :)

Really great views of Boulder. Definitely an asskicker at times, though not always. Trail was in good condition, with lots of people taking advantage of perfect hiking conditions.

So a friend, me and her toddler (he was carried, lol) did this hike Oct 7. The Bemis portion is beautiful, the only thing is to meet back up with the Arethusa trail it’s pretty much straight up. We managed, but be forewarned to avoid the Bemis section unless you want to 1) back track or 2) climb. The falls are gorgeous and the trails were well kept. I’d love to do it again after the winter thaw.

The definitive Boulder workout. One of the first to try if you are only here for a short while!

A fun hike with Kalina Miller today on this easy to find trail with some excellent views. The inclines are not so steep really and there are some nice level sections and a few short downhills. Enjoy the scenery and take lots of pics.

Such a fun little trail! Small bit of scrambling to the rocks at the top. Spikes were useful but probably not required today. Lovely views. Port-o-let at the trailhead. (I always find it useful know!)

hiking
26 days ago

I went sunday, 11/11/18. The final 0.6 miles of road was closed so the whole hike is about 9 miles round trip. It was absolutely gorgeous, it was snowing when I went, wasn't too bad till you get past Fern Falls, then it was about a foot of unpacked snow. If it's fresh snow, I'd recommend taking snowshoes, tho not completely necessary, I went in trailrunners and the whole thing was about 3 1/2 hours round trip, tho I may hike faster than average, I'd plan for probably 4 1/2 to 5 hours. Highly recommend it, especially in the snow, if possible, get the lodge at Fern Lake, that would be absolutely amazing to wake up to that!

hiking
27 days ago

Incredible views, not too challenging (except in inclement weather the rocks are very slippery) definitely a fun hike I plan to do it again after winter, it was so beautiful.

Good bang for your buck - great views for minimal effort. Had the path almost completely to ourselves on a Saturday in November. A little bit of snow but still totally doable. Would highly recommend.

We took Bemis Trail (yellow) up and stopped at some amazing smaller which was pools and falls. The Bemis Trail is about .5 miles long. The one thing to consider is when Bemis joins back to the Arethusa Trail (blue) it is a STRAIGHT up using your hands at times to meet back up with the Arethusa Trail.
We did it with our 9 year old and this was the only portion he complained about.
The falls were well worth the hike. I could have stayed all day.
Note: If you are looking at hiking this in the November+ days at least microspikes are recommended.
The map shown on this page is just the Arethusa Trail, it does not show the red on Bemis.

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