Idea for a sprint

[Burik]

Hello. I have an idea for a good sprint. This sprint begins with San Ferro, going only along the highway around Mount Chiliade and ending in Los Santos. I think it's a very good idea for a sprint, in the style of Nfs Most Wanted. The sprint seems long, but in fact it passes very quickly, that's how the sprint goes down the highway. BUT!!!! I do not know how to use the Map Editor: (What can I do.