Mumbai Delhi 1400 kms in 17 hours - not just in Rajdhani but in Garib Rath SF also. But it has just 6 stops enroute. 1100 kms Mumbai Bangalore has more than 30 stops.
So, a good SF should be run with limited stops - only at PUNE SUR KLBG RC GTL DMM.
After completion of DVG CTA TK line, a SF can run with stops at TK CTA DVG UBL BGM MRJ PUNE.