Hi Tim. Well I guess you are after the secret to the Kenyans success....? Some short-cut tips for massively improving your speed in the shortest possible time....?

It's a trick.... there is NO SHORT-CUT. 
Try any of the following (or a combination thereof):
Lose lots of weight
Go running two times a day
Do strength work in the gym
Plyometrics sessions
Join a running club to get skilled coaching and extra motivation
Follow a structured training programme
Do your easy runs dead easy and your hard runs so fast you want to puke
Throw in some cross-training (biking or swimming) so you are able to sustain higher quantities of time in training, over and above pure running
I know you don't really mean "How can I easily emulate a near 2 hr Kenyan marathoner"... simply, "What can I do to go quicker?". Simply, do more training, follow a structured programme which starts at the level you currently have, incorporate elements of tempo running and high intensity speedwork (intervals).
I highly recommend you read some books on the subject. The P&D "Advanced Marathoning" is staple fare and Jack Daniel's "Running Formula" are both worthy items to have on your shelf.
Good luck, TD. 