Standard ratio in SA is 14/44 but I’m also running a smaller front sprocket, so the ratio now for a long time has been 13/44 and I find it much better than the standard ratio for touring and commuting.
The TTR has got a very smooth 6 speed gearbox and with 13/44 it cruises very comfortably at 90-95km/h all day long with less than half throttle on a flat road. (With or without camping gear loaded)
Some amazing trips have been done with TTR250s:
This guy rode a TTR250 from Europe to Asia - 52,554km
https://www.j-hoppers.com/waruida/menumain_e.htm
And Lois Pryce rode a TTR250 from London to Cape Town, crossing the Sahara through Algeria and Niger and continuing down the west coast through the Congo and Angola to South Africa unsupported.
https://www.loisontheloose.com/africa/index.html