Roller coasters that are under construction are marked with an asterisk (*).
A Roller Coaster Record the U.S. Parks Don’t Hold
If my research was correct then the American parks’ roller coasters top out at 7 loops. B&M have given us great roller coasters like Medusa at Six Flags Discovery Kingdom, Bizarro (Great Adventure), Montu and Kumba at Busch Gardens Tampa, and Hydra the Revenge at Dorney.
Six Flags Magic Mountain also has both the surviving Arrow-looper, Viper, and another looper (Scream!) that I’d prefer to just pretend doesn’t exist as it might taint my opinion of my favorite coaster designer.
Personally, I’m fine that we don’t currently have any record-breaking loopers in the States. While I’d definitely ride a 14-looper, I’m not sure I’d want to re-ride it. Unless the loops were really spaced out and it was designed by the masters of smooth, B&M, it would probably be more of an endurance test than an enjoyable adventure.