we've been thru this many times but worth re-visiting as further analysis of runs modifies likely ability
kennster was nothing special compared to geb, much slower basic 400 speed & the only distance i favor him over geb is 10k & by small amount ( albeit geb had smaller potential advantage over 5k where they were nearly identical )
Tergat belongs in conversation as he had much slower basic 400 speed than above 2 but best endurance by far of the trio & capable of ~26'15 in his 26'27WR as that was off nonsense ~ 13'18/13'09 splits & he was speeding up last 3k which was run in 7'50 !!! which is 26'06 !!! pace
kennster at his peak i get as
~ 51.25 / 1'47.50
->
3'30.06
7'18.88
12'34.50
26'11.49
geb :
~ 50.75 / 1'46.75
->
3'29.08
7'17.85
12'33.94
26'13.50
Tergat :
~ 52.00 / 1'48.75
->
3'31.98
7'21.78
12'38.18
26'15.73
quite honestly, if Tergat had done the weight-training the other 2 did but weight-training ignored by Kenyan coaches ( see canova's philosophy that hill sprints are all the weight-training you need ???!!! ), he wouda bumped up that 400 speed enormously with little loss of endurance & wouda been looking near 12'30/26-flat
ethiopian coaches understood need for weight-training from the east german coaches who trained them from the '70s onwards, Kenyan ones still don't
example of weight-training boosting Kenyan speed is Korir who in 1y going from Kenya to Texas improved his 400 from ~ 46-flat to 43.34R !!! worth 44-flat open !!!