As I've never run a 10k it's hard to say but I do see more often than not 10k times which are around the same as or faster than twice the person 5k PB. Is there a good reason for this. Maybe they don't run 5k's much for example.
Say somebody had a 5k PB of 19.50 and a 10k PB of 39.20 sort of thing. Your basically running twice your 5k PB.
Say somebody had a 5k PB of 19.50 and a 10k PB of 39.20 sort of thing. Your basically running twice your 5k PB.