Have only recently got back into road running, having dabbled a few years back. On Friday I beat my best time for a treadmill 10k, completing in 36 mins. In a fit of enthusiasm, I went in for the Fairford 10k today - my first road race since about 1998 (one of the great Weston-super-Mare prom runs). Tried to take it not too hard because I didn't know how steep the hills were going to be and came in in a comfortable 44-odd mins, although I don't feel that I could have knocked more than two or three minutes off by starting out faster.
Two questions then:
1) If I can run 36 mins on a treadmill for 10k, should I be able to run 36 mins on the road?
2) Is treadmill training an acceptable substitute (at least partially) for road miles?
I do some ridiculous number of hours at work and training in the office gym is usually more pleasant than running through central London smog, although it does get a bit hot running at that pace for that time with no wind in your face. Also, the top treadmill speed in this gym is 36 min pace so it's not ideal for faster shorter distances.
If I do another (flatter) 10k in the next week or two, I want to know whether I should go out at the treadmill 36 min pace or something more conservative. Would be grateful for all comments and suggestions.