Drivers coming down I-25 may notice the interstate's transition from the Ronald Reagan Highway by Colorado Springs to the JFK Highway by Pueblo! Such is the charming character of Colorado's ninth largest city. Pueblo, long renowned for its green chile and blue collar workers, now has some black diamond bike trails to test the area's best bikers. Of course, the city still has a number of trails that appeal to newbie mountain bikers. They can spend an easy day cruising the Historic Riverwalk. More adventurous riders can try the miles of singletrack to be found in Lake Pueblo State Park. Especially recommended is the complex of trails on the south shore. Most of these trails are fairly short, interconnect, and some are not well marked, so one must be careful not to start down a trail that may be too difficult.