I am new to the site and the GPS world as it relates to sledding. however I have researched and w/ the use of the maps I found on this site and others I was able to cut/copy/paste/combine what I believe is a more user-friendly map. I have a 276C and I believe you can have 3000 points per track and the unit will hold 15 tracks with a total of 10,000 track points in all. I noticed alot of the maps on this site had many more tracks that were a very short distance. It took me several hours but I think I figured out how to merge trails. So I figured since I took most of the info from this site I would post my Maps. This is my first edit if they get better I will repost. Especially after I ride the trails myself w/ this unit. This 276C is one hell of a unit. I use it in the car and on my boat it works great. I cannot wait to use it on my sled! The more I read and play around w/ it the more impressed I am it was definitely worth the money. I probably have $1500 into it w/ all the extra software for the lakes/roads. Garmin says it is good to zero degrees but I have heard that it works in even colder temps. Alot of gas stations and restaurants are already on the unit if you have the city select software. There is a yellow pages (similar) within the unit. Awesome stuff!!!