I am currently training around 50 miles a week as follows.
5-6 Days with:
1 Long run 18-20mile
1(or 2) Speed sessions
1x 10-13 Miles run
2x 6-8 Miles
All was going very well until at Bramley 20 yesterday. The weekend before I ran for 2:50 (no idea of distance, must have been around 20-22) and felt tired at the end but ok.
BUT at Bramley I was slugish, got to around 15Miles in 1:52 and then WHAM, went from comfortable 7:30 minute miles to total slow down. The next mile was over 8, then nearly 9, then over 9 m/miles for the rest. Since I have been training for London I have ran 20 miles 3 or 4 times before Bramley and this has been off road at around 8-8:15 minute miles. I realise 7:30 is faster than this but I recently ran 1:31 for the 1/2 Marathon (7:00 minute mileing). Also my 4 previous marathon attempts have all been going well until around 16-20 miles when I go from nice comfortable running to suddenly (like over a couple of minutes) totally drained and feeling like I want to stop. HELP! What can I do better in training?
thanks in advance.....