Perception of distance

At Illinois, part of my run was on University from Lincoln to Mattis and back, about 6 miles. I have a similar run now here in CA w/ the same distance going down Stelling until it changes into Prospect and hits De Anza Blvd before coming back. 

For some reason the run here in CA seems much longer. I wonder if it has anything to do w/ me having done the run when I was younger, which colors my perception. But I still run it at my desired pace and it seems less imposing now that I've done it a couple of times, so I guess it's pretty much all mental. I think the density of the neighborhood, the knowledge of stores and stuff passed also make a difference.