The Cross Country Ski Headquarters has a new color map for the 2009-2010 season with both miles and kilometers marked for each trail and combination of trails. Not only can do you know how far the Rolling Hills trail takes you, the map also tells you the distance for combining the Manitou, Wild Turkey and Rolling Hills (i.e. 7.0 Km or 4.3 miles).
The new full-size map is here (180K PDF)