I was at Shawnee Mission Park.
More info here:
http://www.earthriders.com/trails/tr...s&file=smp.xml
Actually, I read the info from the above. It's a bit inaccurate, as they went in about a year ago and re-did the trails in a more friendly and erosion-safe manner. The map is accurate and up-to-date, but the description is not. Notice the lack of direct-descent lines on the paths. That's a new feature, mostly for erosion avoidance.