I'll take a stab at it:
100m - 9.58 (Bolt)
200m - 19.19 (Bolt)
400m - 43.03 (Van Niekirk)
800m - 1:40.91 (Rudisha)
1500m - 3:26.34 (Lagat)
1 mile - 3:43.73 (Ingebrigsten)
3000m - 7:17.55 (Ingebrigsten)
2 mile - 7:54.10 (Ingebrigsten)
5000m - 12:37.35 (Bekele)
10000m - 26:17.53 (Bekele)
Half Marathon - 58:55 (Gebrslelassie)
Marathon - 2:01:09 (Kipchoge)
Explanation: I think Bolt, Rudisha, and Bekele are just freak talents. Van Niekirk appears clean to me because he wasn't consistently running crazy times, which tends to be more possible with drugs. I know it's controversial, but I think Lagat was clean. I think he was just another freak talent. I believe Jakob is clean as well, he's been trained so well from so young, he's basically a science experiment, and he has some talent, so shocker he's fast. I think there's a lot of money in the half and full marathon, so there's rampant doping in those events. That's why I had to go so far down the list for the half marathon, but I believe Haile and Eliud are clean.