Pack up the bikes and head west to Shark Valley, where there are no sharks but plenty of sunbathing gators lounging around the 15-mile looping path. It's a nature-filled workout with ample views of pristine saw grass and loads of migratory birds from January to March. What's that, you say? Pedal-pushing your way past gators and birds is sooooo touristy? Well, there's also a decent chance of spotting one of the much-hyped Burmese pythons that are grabbing national headlines. Park ranger Eric Riordan says five of the suckers were removed from the park in December, including one that was 16 feet long. If that's not motivation to keep pedaling, what is?