Mammoth Cave Railroad Bike & Hike Trail Mammoth Cave Rails To Trails By musicman01 in 9/5/2011 11:44:31 AM | This trail more suited to the wide tired mountain bike riders. It is a beautiful trail ride and is challenging for the older riders (we are in our mid 60’s). We ride hybrid/comfort bikes and you have to watch out for loose gravel. The trail has more hills than most rails to trail trails. Overall it is a beautiful, challenging ride. While at Mammoth Cave be sure to take the "Historical", "Snowball", and "New Entrance" tours of Mammoth Cave. They are well worth your time and energy. Suggestion; don’t try biking the trail and then doing more than one of the cave tours in the same day. In fact, don’t try doing all three cave tours in the same day; they are too long and physically challenging. It is a beautiful place to ride your bike and splunk around in the caves.