I tend to do 10 hours most days in the winter. Call out after that. The one weekend I had done 50 hours in the week and then 12 hours on the Saturday, 6 hours on the Sunday. Then back to work on the Monday and started again.
The worst time I've got back was about 3.30 am and then went to work for 9. I got called out to a leaking boiler at 11.30 and it was over an hour away. Job took an hour, then drove home, except they'd closed the motorway junction I was due to get and there was a diversion. Someone went in to the side of my van, so had to sit at the side of the road and report it to the leasing company, then continue the longer journey home. Hated my job that day.
I also do some work for a Friend in the summer. After a full week at work doing gas work, I was up early on the Saturday helping out at a half marathon. Then had a 4 hour hour drive, 3 hours of sleep, time a triathlon, then a 4 hour drive home. I think I got back o the lock up about 6 pm, running on 3 hours sleep. 8 hours of driving. 4 hours riding my push bike. Several hours timing athletes. I felt like a poo. Lol!