i do a lot of long distance biking and its a lot better to go with a friend. It gets kinda boring and takes the fun out of a bike ride if you're alone in a foreign place for a while. I hate to agree with your mom (i know we don't like it when they have a valid point) but if some shit happens its a lot better to have someone with you. All the power to you if your going to attempt such a long distance ride but I would definately go with a buddy, not only is it safer, but its way more fun.