Grotpeter Trail

MODERATE 85 reviews
#3 of 4 trails in

Grotpeter Trail is a 4.2 mile heavily trafficked loop trail located near Saint Louis, Missouri that features a river and is rated as moderate. The trail offers a number of activity options and is best used from March until October. Dogs are also able to use this trail but must be kept on leash.

4.2 miles
360 feet

dogs on leash

kid friendly


horseback riding

mountain biking

nature trips

trail running





wild flowers



Varied routes and the challenging terrain with numerous elevation changes make this a popular trail with all users. In addition to the main trail, five white connector trails, totaling 2.6 miles, are available to enhance, shorten or lengthen the users experience. From the trailhead, east of the park office, the trail crosses Kiefer Creek Road before climbing up and over a hillside. The trail then winds up another hill to the top of a long ridge. White connector trails 1, 2, 3, 4 and 5 can be used to bypass steep sections of the trail. After reaching the pinnacle, the perimeter trail follows the crest of the ridge before starting a long downhill back into the Kiefer Creek valley and back to the trailhead.

2 months ago

The trail itself was great. It started off with a challenging steep climb, too. I am unsure if it is primarily a mountain biking trail, but it was very crowded with bikers during our entire hike. We moved off the trail with passing bikes at least every fifteen minutes.

4 months ago

A moderately rugged trail loop. Longer than the trail is marked or mapped on All trails. A loop hike through hilly forest area. A brief section near the parking with a pretty creek. Lots of deer. A very busy trail with lots of hikers, backpackers, runners, dog walkers, bikers and signs of equestrians.

5 months ago

Good trail well marked. The full length of the trail was about 4 miles long with some nice streams along the way. I will hike it again.

6 months ago

love the roller coaster section

trail running
7 months ago

Nice trail

7 months ago

it's nice but not nearly as nice as Castlewood's other trails

8 months ago

Nice dog walk with hills to keep it interesting and provide a bit of a work out. Got up close to deer who just stood and watched us walk by. Main complaints: no views and lots of mosquitos on a day after storms, so bring your bug spray.

trail running
10 months ago

trail running
10 months ago

Nice trail for running, hiking, and biking. Plenty of options to increase your mileage or cut it short.

10 months ago

Very nice, I do feel as though Castlewood in general is just too crowded for my taste at all times of the year and it sometimes takes away the experience for me.

Tuesday, February 21, 2017

Gave this one a 3 because the other trails there are better! This one had a pretty steep incline so it was a decent workout but not much to see!

Saturday, December 10, 2016

Good hike - lots of side trails you can take to add to your hike to make it longer if desired

trail running
Sunday, November 27, 2016

Nice off course and found myself on the Roller Coaster trail which made a 2.7 mile hike a 4 mile hike. Some good hills, single track, packed dirt and rocks, lots of roots.

Tuesday, September 13, 2016

Beautiful trail. Some intense inclines

Monday, September 05, 2016

Great trail, well marked, mostly uphill, rocky down hill! Less traffic than other Castlewood Park Trails.

Wednesday, July 13, 2016

Easily my favorite trail in STL. Varied trail surfaces, lots of inclines and declines, and the beauty of these Woods make for a great hike. it takes me about an hour and 15 minutes to get round the entire thing but there are offshoots that allow you to lengthen or shorten as you like. It is primarily a mountain bike trail so be prepared to step off the trail as they come by.

In the summer, it gets hot and muggy back there so bring water. And it gets pretty ticky too, so don't skimp on bug spray.

For an extra bonus, pick up the Lone Wolf trail connector to go up on the bluff overlooking the Meramec River. Great views.

Monday, May 16, 2016

This trail was great. It was well-maintained for the most part. I really liked how the walking surfaces were varied—it made it more interesting (gravel, hard packed earth, wood chips, etc)

There were only a couple parts that I found to be pretty tough, but I'm very new to hiking, and not in the best shape yet. There was a really long steep hill near the beginning that just kept going and going... but I felt fantastic when I reached the summit :-)

6 days ago

mountain biking
25 days ago

Load More