colder and wiser wrote:
Amazingly, you have supplied all the information needed by the RW marathon pace prediction calculator, which factors in 2 race times and miles per week into its marathon prediction (and not into other distances):
http://www.runnersworld.com/tools/race-time-predictorResult: 3:24:12.
This is the worst calculator ever! I put in 17:45 5k, 35 flat 10k and 70km per week trainining and it gave me 3:05! I ran 3:02 with 60 km per week and a 39:04 10k pr at that time. I have also run several 3:10 to 3:15, in hilly courses, even before I was able to break 40 in the 10k.