I visit this open space at least a couple of times a month. It's pretty neat to see what's going on down in the wetlands area, and there's a trail that branches off of the sand creek trail and leads down to the creek itself. My kids love exploring aling the creek.
Sam M. on Sand Creek Greenway Trail
Part of my Stapleton--Broomfield bike commute. A few rough spots (I.e., bumpy, unpaved, homeless-inhabited) between Westerly Creek Park and Quebec St., but a great connector to the South Platte Trail and some well-maintained, senic paths sneaking along Sand Creek and I-270.
Turn in (off Smith Road) at the Morrison Nature Center, follow the road and park by what looks like a house. It's the Nature Center and is open every day, I think, with Rangers and real rest rooms. It's a loop trail with a pond in the middle and connects to the Sand Creek Trail.
If you prefer to walk this as a loop it might be best to begin at the trail head just east of the horse corral as it is more narrow than the west trail and you might miss it if going in the reverse direction. You will be traveling in a clockwise direction.
Also, if you are a Geocacher there are a lot of treasures to find in this area.
This trail is right by my house. I love it that many people don't use it. I can walk my dogs or ride my bike. You can almost always see some type of wildlife here. Twice I have even seen coyotes. What I don't like is under the roads there is almost always trash and broken glass. Which makes dog walking somewhat hard. The trail is also used by horses so there is ALWAYS horse poo to dodge and the divits in the ground if you are not careful can twist an ankle. It makes for great bike riding the trail goes quite a bit farther than showed on here. There are also side trails one can take where it gets almost beachy with the sand. My little dog does not enjoy that lol so we stick to main trail