corrado wrote:...... and I've yet to meet anyone who actually "rode all day".

Oh yes you have

... or very nearly all day! I've done it twice.
1. Euro Switzerland (the one before last) I got off the ferry at 6:00 in the morning and rode until gone 11:00 that night, covering the whole distance and having to stay in the train station in Langenthal that night because nowhere else was open. This was on a home tuned iron 225 running a GPM piston. It did take me 2 days to get home though as a shattered piston shim took out my rings on the way home (piston replaced with 2nd GPM item and new shims on the motorway near Basel).
2. I made my travelling companions get up at just gone 5:00 at Euro Avignon so that we could ride to Orleans to have dinner and spend the night at a good French pal's home. We didn't get there until well gone 11:00 too but my pal had the table set and the wine 'breathing' for us when we arrived

The 3 bikes ridden all day that day were 1 x Avanti TT3, 1 x Harry Barlow iron lined alloy Suzuki 190 and 1 x home tuned iron 175 running 22 Jetex and AF clubman.
It might not be 00:00 to 24:00 but both of these days really were riding 'all day', from dawn until late into the night. One of my 3 on the way home from Avignon said that riding all day was on his bucket list but that he had now crossed it off his list. Other than fuel and a breather occasionally at those fuel stops, the only time we stopped for any length of time was when we stopped at a roadside cafe for lunch and the Jetex was stripped and cleaned to get rid of water from the float bowl.
As far as I'm concerned, this is ticked off my bucket list too!
Adam