Define "day"
FJR1300- 1400+ or so in 21 hours, I'd have to look at a map and figure some side trips to get exact miles.
KLR650- 1100 miles in 19.5 hours
Aprilia Falco- 870 miles in 15 hours, including CA-128 to CA-1 back to 101.
Tiger 800XC: 700 miles in 16 hours... two up. Stock seat. Most painful of all these I've mentioned.