Join the largest community of outdoor enthusiasts.

Get Started

Upgrade to Pro

Unlimited access to National Geographic TOPO! & Trails Illustrated Maps

Learn More »

Best Trails

Harney Peak - South Dakota Highpoint

Custer, SD

Hiking
+

More Activities

Trail Running
Equestrian

Sylvan Lake Harney Trail is a 7 mile out and back trail located near Custer, South Dakota that features a lake and is rated as moderate. The trail is primarily used for hiking and is accessible year-round. Dogs are also able to use this trail but must be kept on leash.

  • Best Hiking

  • Best Mountain Biking

  • Best Trail Running

Recent Reviews

Picture?width=50&height=50

Harney Peak - South Dakota Highpoint
by

23 Completed 23 Reviews

Fun hike with a variety of trail options so that the return trip does not have to be exactly the same. Great vista at the end. Advertised as the highest peak between the Pyrenees and the Rockies. :) Lots of interesting rock "needles" formations along the way.

Person_placeholder

Lookout Point - Centennial Trail Loop
by

14 Completed 5 Reviews

This is an easy to moderate trail. It combines the Lookout Point trail (number 4 in the Wind Cave National Park) with the last part of South Dakota's Centennial Trail to form a loop. The trail is easy if you travel counter clockwise -- starting on the Lookout trail. A little over 2 miles in you will descend into a series of small valleys. This is a steep descent going counter clockwise, but a steep ascent going clockwise. The Lookout trail takes you across a stretch of prairie, including through a dozen or so prairie dog communities. There is also evidence of bison activity. If you hike in the early evening, you could run into elk coming down from the hills into the valleys about halfway into the hike. We did not see any elk, but we came across a resting bison and a bison carcass. Just after the Lookout and Centennial trails meet, look for the cave on the left where much of a stream ends up. Also. the trail ends on a short but steep incline. Be alert; while the trail is marked some parts have grown over and/or gotten mixed up with elk and bison trails.

Person_placeholder

Castle Trail
by

87 Completed 10 Reviews

It was a tough trail when the temp was closing on 90, the 11 liters of water my wife and I shared saw us through to the end of this oput and back trail whose unique views ]made it worth the effort of the trek.

Icon_

Cliff Shelf Nature Trail
by

8 Completed 1 Reviews

It was a great starter trail after a 900 mile drive. It is an easy trail that is well-maintained and accessible to people with mobility issues. It's wonderful that the National Park Service has made the parks available to more people.

Person_placeholder

The Door, Window, and Notch Trails
by

27 Completed 27 Reviews

Person_placeholder

Lake Sylvan
by

27 Completed 27 Reviews

Person_placeholder

Presidential Trail, Mt Rushmore
by

27 Completed 27 Reviews

Nice for families. Do it in the evening and combine with lighting ceremony.

Picture?width=50&height=50

George S. Mickelson Trail
by

4 Completed 3 Reviews

An absolutely beautiful trail! Intermittently came across people bike riding, hiking, walking and running on the trail. From Red Fern to Mystic, there is a 5 mile downhill 8% grade which you should account for if you are doing a round trip as it's quite a long climb! Scenery is breathtaking. You will have GPS Signal, but may not have Cell Phone Reception. Wear appropriate shoes and bring water although there are intermittent water stations. Also, make sure you wear sun screen. If you are doing the entire 109 mile trail, you should budget 12 hours of biking.

Picture?width=50&height=50

Harney Peak - South Dakota Highpoint
by

4 Completed 3 Reviews

One of the best hikes I've ever done. It took us about 90 minutes at a pretty good pace. You should allot 2 hours each way. The trail starts out across a meadow, but then ends up quite steep with lots of boulder hopping. You should bring water, wear appropriate shoes (not thongs or flipflops!) and apply sunscreen generously. The views are absolutely outstanding. The former Fire Station is in good condition and is a great place for lunch. There are no restroom facilities at the Fire Station Lookout. Go early in the morning when it is more cool. Avoid going to late in the afternoon as sudden thunderstorms can blow through.

Person_placeholder

Sunday Gulch Trail
by

6 Completed 4 Reviews

This trail was so much fun to hike! It has 2 very different components. We hiked it backwards as recommended by someone. One end of the trail is a little steep & rocky with nice smooth forest hiking in the middle. The other end was steep, rocky and wet with many water crossings. There are rails to help and in certain places they are needed. I would recommend waterproofing your shoes and wearing shoes with a rugged tread for this hike. When hiking it backwards be aware that the trailhead is the first one you come to after passing through the rock tunnel from Sylvan Lake, but after a short hike in there is a small trail marker with and arrow pointing left. Take that trail even though it is not marked with the traditional blue diamond shaped marker, otherwise it just takes you to a spot for rock climbers.

Support