1. In terms of their sheer speed at 400m, what is the slowest you've heard of any sub 4 guy being?
2. In terms of their 5K strength, what is the weakest you've heard of any sub 4 guy being?
For me: I know of one guy who ran under 4 on 51.5 400m speed who wound up breaking 4 (post collegiate), and I know of another guy who I don't think was capable of much better than 14:3X who broke 4 in college. Anyone know any 52+ or 14:40+ types who broke 4?