An 11½ EEEE foot here, I could get them built at Austal Shipyard, I suppose. I am a fan of the Sidi "Mega-" width sizing shoes. Sidi are pricey, but watch for the frequent sales on-line, if your LBS doesn't carry or want to order them. I got my Genius 5 in mega width from Competitive Cyclist for 1/2 off the MSRP, paid $149.95, shipping was free. As said above, Specialized has width sizing, as do a few others.

I hope that New Balance comes out with a cycling shoe, I will not buy any other running shoe than my beloved 990 series, I got my first pair in 1983. Four pairs reside in my closet right now.

Bill