A few months ago when I was planning my cross-US tour, I read that an average touring budget was $30 to $50 a day. I tabulated my on-bike costs (not including travel to/from termini) at $25 per day so I guess I did cheaper than average. $60 should be pretty generous, I would think.

I stayed at a motel every two weeks or so, a few warmshowers hosts, some of those insanely expensive $35/night private campgrounds, but mostly camped for free. Food costs were about $15/day and I ate well--one diner meal per day on average and lots of bulk groceries. I spent money on high quality bike parts and tires before the trip and didn't have any mechanical issues. I didn't have any medical issues.

I just had a warmshowers guest who tabulated his costs for the last several years at $0.008 (8/10 of a penny) per mile, an average of less than $5 per day! This guy is an expert freegan.