Mountain biking in Durango, Colorado, home to the first-ever World Mountain Bike Championships, is an attitude as much as anything.  According to a friend from Texas, you can tell the quality of a town's recreational spirit by the number of roof racks on the cars.  In Durango, it seems that half the vehicles you see look like some neo-20th century Christmas tree -- decorated with bikes, skis, kayaks, sailboards, and canoes.  With miles of top-quality trails in the surrounding mountains, it is no wonder many of the nation's best professional riders reside in Durango and many wannabe pros make the town their destination for biking holidays.