54 days 21 hours and 12 minutes.

Unofficially, Karl's is the fourth fastest thru-hike of the Appalachian Trail.

In order, the fastest finishers:

Andrew Thompson: 47 days 13 hours 31 minutes (2005)

Pete Palmer: 48 days 20 hours 11 minutes (1999)

David Horton: 52 days 9 hours (1991)

Karl Meltzer: 54 days 21 hours 12 minutes

Scott Grierson: 55 days 20 hours 34 minutes (1991)

Jennifer Pharr Davis: 57 days 8 hours 35 minutes (2008)

Read more: http://www.whereskarl.com/

I think its awesome that he continued even when he knew the record was not going to happen. That shows a lot about his character. I'm beginning to plan my first multi-day run so this is very inspiring for me. I thought his website with the integrated map and gps coordinates was so cool. I wonder how he did that?