Hmmm.....that's just about par for the course in these parts. Northam (Western Australia) to Goulburn (just outside Sydney) in a C150, 1,982 nauticals, 3 days, single pilot/occupant and over some very, very inhospitable terrain!
That's nothing. How about Mesquite to Caddo Mills in a C-172 over 14 days - 23 nuatical miles
and for most of the time I didn't even have ONE engine turning