Zion Curtain

Its always interesting the variety of reviews, depending on the age and skill of the reviewer.
Wife and I are older, but both advanced riders. We did not care for this trail at all, and we only got into the singletrack about 2 miles CW. Too much hike-a-bike, both up and down. We saw motorcycle tracks just before us, and those deep knobbys really soften the tread surface.
If you are a gonzo rider, you will be able to ride some of the downhills, but the steep uphills are 30-50% grade, not rideable. These sections really need detours, so that riders can choose, and have an actually rideable uphill option.
If you like these kinds of trails, go for it. If you prefer more "flowy" trails, this ain't it.

No matter how you cut this ride ur gonna spend some time on a fort road. From exit 2 drive up on the hill as it cuts off a couple of boring miles in each dorection. We parked at the road jct where u turn left again following the freeway. Crossed under the road and took the single track just up the road a few hundred yards. There are some sprint climbs but most of it can be ridden. Views looking down on the entrance to West Rim were great. Liked the drops this direction. One long, steep with a good step in the middle. Look out. Swooping fast for a couple of miles and then a road ride out. Worth doing once. Not sure when I'll be back.

Absolutely killer trail, one of the more fun ones I've ridden. A pretty decent climb up but never too steep, so very manageable. Mix of singletrack, some rock-riding, not too sandy. Get to the top with an amazing view of Rabbit Valley, then you've got an absolutely ripping descent. Phenomenal mix of desert singletrack, little bit of rim-riding, one super steep section, some whoop-de-doos, it's got it all. A ton of fun, highly recommended. Also recommend driving past the Trail Through Time trailhead off 70, drive up the gravel road (west), take a left past the Zion Curtiain TH sign, and park on the CO/UT border fence. That'll eliminate a bunch of gravel road mountain biking and lop off a bunch of distance. We parked at the sign for the Zion Curtain TH and did 20 miles. Pretty self-explanatory to follow the trail, from the 70 underpass, go south but don't take the immediate first left on singletrack, take the next left, then from there, it's easy to follow. At the very end, take a right at a 4 way intersection on doubletrack and that'll bring you back to 70.

I rode this last week. IT WAS AWESOME, I love to ride in the desert !! I was challenging, no room for error in a lot of places. The scenery was absolutely GREAT. I never saw any one else, made it very exciting. You do need to be use to high temps to make it this time of year, if that is you... nail it, you will not be disappointed. WATCH FOR FLASH FLOODS !!!

This is a great ride with many possibilities. Can be ridden either direction but clockwise is usually the direction. You can also start from the Bitter Creek Campground.
A tough climb followed by a ridge-line ride with some slickrock and one wicked descent that will make you pucker a bit. I have only ridden Zion as part of a larger loop: Zion >Overlook> Arch Loop> Connector> Western Rim >R.V. #2. It’s one of the best epic rides in the valley. Some are calling it The Holy Grail* Review edited 5/23/2011

This trail is on Utah-Colorado border. It has a remote quality to it which adds to the fun factor. Once past the I-70 take the singletrack on left. Follow along the state line and up to a rim. There are a few tech spots to keep you alert if the scenery doesn't do it for you. Down a ridgeline with some scary parts to it and meeting up with the Kokopelli Trail. Really fun ride. Really fun sections of flowing trail off the rim.