Distance in a day?

[Namib Rider]

On a cross country tour, what is the maximum distance / time in the saddle that one should reasonably and realistically expect to complete comfortably and safely in a single day?

 

[Ganjora]

 

[IDR]

 

[Manic]

 

[ETS]

 

[cloudgazer]

 

[M.filer]

 

[Legadema]

 

[Masai]

 

[Crab]

 

[Manic]

 

[jagter]

 

[Gerard]

 

[Just_Plain_Dan]

 

[Fuzzy Muzzy]

 

[subie]

 

[subie]

 

[ETS]

 

[Eendstop]

 

[Sithe]