In Memoriam, FlyerTalk Evangelist
Join Date: Jul 2002
Location: Durham, NC (RDU/GSO/CLT)
Programs: AA EXP/MM, DL GM, UA Platinum, HH DIA, Hyatt Explorist, IHG Platinum, Marriott Titanium, Hertz PC
Posts: 33,856
I did D20 to C4 at IAD this year trying to make a rebooked flight after my inbound was delayed. I walk very fast and that was still 15-20 minutes.
I also had F14 to C24 at MSP. I think High-F to anything in A there has to qualify as some of the longest walks I've seen.