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reviewed by RickSTL on August 23, 2009
Start at the first parking lot/circle AFTER the ranger office
Trail head is immediately in front of you. The route you see here is starting
to the right. Either direction you go you will get a nice flat section to
prepare you for your first ascent.
Grotpeter is the blue trail. It is well marked and easy to follow, there are a
couple of points where you must cross the road.
There are many bikers on this trail.
I did not run the connector trails but I marked waypoints on entry and exit
points.
Using the route I took to the right, "Anaerobic Hill" lives up to its name. Not
sure if too many cyclists attempt to go up this hill but I could see it being
pretty hairy coming down! Hiking up this 0.25 mile portion certainly got the
heart beating.
The remainder of the trail is capable of being run with a few technical spots
due to rock/roots and steep descents, for the most part the trail is well
worn can be run.
There are a couple of waypoints where you must cross the road. I tried to
communicate the directions as best I could. The crossing towards the end
of the trail is most confusing.





reviewed by sprgfd on August 21, 2009
This is where I begin my favorite trail in STL. I ride this daily after work rain or shine unless there's thunder and lightening. My recommended run is as follows; enter the park, pass the ranger station, cross the creek and park in one of the 2 parking areas near the playgrounds. Get on your bike and continue to follow the road under the railroad tracks then start watching for the first parking area on the right where you'll probably also see an open field with a narrow single track, there's also a somewhat rocky dirt single track running parallel to this field on the right(north?) side. Take your pick, it doesn't matter because you'll end up in the same place. Continue to follow this single track west and you'll come across a tunnel with a little wooden setting at the mouth, don't go in the tunnel as i think it heads to some stairs for hikers but just cross over and keep heading west. Shortly after this the traill narrows down and you get some blind corners and hills and then a very root filled washed out section along the river, i usually have to carry over 2 parts of this but im riding a very old bike with no suspension. after the washout area continue west and the trail will start to fork, this area can start to get confusing but you can almost pick directions at random as long as you continue west and you'll end up in the right area, if you find the cedar bluff trail you're in the wrong area, you're looking for the Al Forester trail signs and the trail to become tightly packed gravel. Continue west on Al Forester until you come across an asphalt road that only goes left or right (if you find an asphalt road that you can cross over to more gravel trail, cross over, this isn't what you're looking for) The asphalt road that goes only left or right is the entrance for Sherman beach, head left(southish) down to the parking lot (apparently there's also single track to this lot but i can never figure out where to get on.) once in the parking lot head to the right(west) and go under the railroad tracks, this will be looser gravel, follow this and there's no real deviation all the way to what i think is Greensfielder park where you'll get on a street. Take the street to where you'll see and asphalt trail on the left. If you get on this you can ride it all the way to HWY 109 and the backside of Rockwood Reservation. All and all this is about 8 miles i think and you're looking at about. The asphalt section from greensfielder to HWY109 and rockwood res is about 1 mile, the dirt single track and gravel is about half and half with the gravel a little longer. This is an excellent workout and on a very good day I've done it in as little as 1h 15m but it's usually more like 1h 30-45m. I give it the More Difficult rating because of the dirt single track in Castlewood but after that part its Easy-Easiest.






reviewed by m311ton on March 26, 2009
Castlewood is a beautiful park with some fantastic scenery. I really enjoyed the views over the river, some of the forest scenery, and even a fun creek crossing. As far as mountain biking goes though, I have some complaints...
First of all, the trails are incredibly confusing. There are multiple parking lots/trailheads with little marking of the trails. I had no idea where to start. Randomly the trails are well blazed, but in general you never really know where you are or where you are going. And when there is a blaze or sign, it comes way too late. This is annoying because you have no advance warning of what is ahead. By time you read the sign, you've already blown past your turn/connector/etc. Had the trails been better marked, I probably would have loved the park.
My second complaint is that the trails are two-way traffic and allow for pedestrians. While the trail is just wide enough for two bikes to pass, this means you have to really be careful on the downhill sections as you may come around a bend and smack into a jogger or biker going the other way. As a result, some of the downhill sections aren't as fun because you have to take them slow and careful to avoid a collision. They have some great potential otherwise though.
Finally, because this is such a nice park (I admire the scenery and multi-use accommodations), there is incredibly high traffic. I went around 2:00pm on a Thursday, and it wasn't overcrowded, but by time 3:00pm rolled around, the parking lots were jammed and there were people everywhere. Again, not a biker friendly atmosphere.
All things considered, this is still a great park. I will probably return for frequent rides. It deserves an "A" for effort and a "C" for execution. Make it more biker friendly, and this is one awesome park. I rode the Red Blaze (River Trail I think?) and the Blue. The Blue was a bit of an adrenaline rush. Nothing very technical, but a lot of loose rock that can be troublesome at times.
**Tips: Try and ride when you expect little traffic: avoid weekends and after-work hours. Study the trail maps hard before you go because it is hard to find the right trailhead and easy to get off track. The park is free.

TRAIL TAGS
whoopty-dos
river
loop
bottom
fast
castlewood