A few GR4s I have seen in the Loop
11-mog8 by victor priday, on Flickr
21-mog7 by victor priday, on Flickr
3gy42 by victor priday, on Flickr
4gy41 by victor priday, on Flickr
5gy40 by victor priday, on Flickr
6gy39 by victor priday, on Flickr
7gy38 by victor priday, on Flickr
8gy37 by victor priday, on Flickr
9gy36 by victor priday, on Flickr
10gy34 by victor priday, on Flickr
11gy33 by victor priday, on Flickr
12gy31 by victor priday, on Flickr
13gy30 by victor priday, on Flickr
14gy27 by victor priday, on Flickr
15gy26 by victor priday, on Flickr
16gy25 by victor priday, on Flickr
17gy23 by victor priday, on Flickr
18gy22 by victor priday, on Flickr
19gy21 by victor priday, on Flickr
21gy19 by victor priday, on Flickr
22gy9 by victor priday, on Flickr
23gy4 by victor priday, on Flickr
24gy0 by victor priday, on Flickr