Brand new 8 mile singletrack that is on the East edge of the Lunch Loops. Part of a motorized area, but didn't seen any motorcycles on the skinny Butterknife trail. Unfortunately trail starts high and finshes with an 4 mile jeep road back to the top. Definitely worth doing.
After the ride we hit Sonic Burger and refilled. Then part two of the day, headed back to do Mary's and Horsethief with our friends Bill and Renee who drove in from Boulder. Grand total of 20 miles for the day.