100: Bolt 9.58, 2009
200: Bolt 19.19, 2009
400: WvN 43.03, 2016
800: Rudisha 1:40.91, 2012
1500: ElG 3:26.00, 1998
5000: Bekele 12:37.35, 2004
10000: Bekele 26:17.53, 2005
I'd say 400-5k records will go down in the next 10 years(the 400 could easily go down this year).
Bolt's times are unreal but I can see more progress in the shorter events. I'm going with Bekele's 10k as the toughest record