I read a book a few years back and I would like to know the title. It is about a girl who travels across the USA on a bike. She follows Highway 2 across the top of the US from Chicago to Alaska. Her boyfriend was killed by a bear in Alaska and she wants to go back to the site. She only makes it to California and I think she kills herself in California. Thank you for any help you can give.

Going to the Sun
By James McManus