I have been building a steady base for the last 2 months of 55 miles per week, I am entered for the Abbey dash, Brass Monkey and London. Its true what you say that the more mileage the easier it gets, I am running the same route in training at a quarter of the effort but have reduced the time over 7.5 miles by 8mins. I am enjoying my running at the moment and the plan is sub 3.00 at London.
The only races I have done since London (breaking a bone in my foot) is the Harrogate 10k 38.40 off no training at all and Horsfoth 10k 38.20 of 2 weeks training.
G.