Hey fellow TT's I downloaded this sweet little app for my Iphone that works really well for trail riding. It’s called "Trails". It’s not just for trail bike riding specifically but who cares about hiking? It uses current GPS locations to pinpoint your exact journey. One of the cool things about it is that you can send your journey to email and then upload it Google earth, an you can see exactly where you rode. It records average speed & elevation as well but I don’t think that part is very accurate. You can also download other trails that other people have taken but I haven’t done that yet. It does chew the crap out of your battery but if you make a pit stop or camp somewhere over night you can pause it and start again later. I think it’s about $5 to download as well. Im not a rep for the product or anything. I just thought it was really cool.