oh, hah.. never mind, I read right over that.
OP: Seriously? Why in the world would you *ever* tell someone during an interview that you quit a previous job to go on a long bike ride? Unless they for some reason during the interview bring up the fact that they like to ride, and maybe you tell them that story from the perspective of you being young and it was a low end temporary type highschool/college kid job. Although it sounds like thats the sort of job you're trying to get, considering you say you would and may quit this job to go ride for the summer again. In that case, just lie to them since you aren't going to get a good recommendation for the next entry level job anyway.