I am fortunate enough to work from home and also fortunate that I live on a Peninsula with some great coastal roads. Most days I try to find the time for a quick ride to the top of 'Arthurs Seat', a local hill that's popular with riders.
The climb up the hill is quite challenging (especially in the wet), with a lot of tight hair-pins and I find the level of concentration required really helps to clear my head. I usually stop at the top to have a smoke and a chat with any other riders that happen to be up there.
The round trip, including the stop, normally takes about 1 to 2 hours, depending on the weather.
On most weekends I try to go on a longer day trip, with my wife on the back. These trips average about 6-8 hours return.
Overall, I find the Sprint to be the perfect bike for what I do. I think the only bike I'd ever swap the Sprint for, would be another (later model) Sprint.
Mark