Just how big is the city of Santa Clarita, and how far is it from 'civilization' (according to all the alienated youth on Tumblr)?
The city is approximatly 65 square miles in size, though the triangular footprint of the city makes it seem like more.
From point A to point B? That's where it gets interesting.....
Santa Clarita is basically shaped like a triangle, as seen in the picture below, with the top angle being about 13 miles across, then 10 miles down to the bottom (Newhall) and 11 miles back to the beginning.
Above: Santa Clarita (13x10x11)
Below: Same dimensions overlaid on San Francisco. The triangle stretches well below Daly City.