Thanks bob. That makes some sense. So I over trained at faster than marathon pace. And should instead have just got very used to running at marathon pace. So I was probably a bit burnt out and maybe that along with a case of the nerves and the heat.
Already thinking that if I do this again I will do more races in preparation and really drill in my marathon pace. Plus I will pick a low key UK marathon in colder conditions!
Yesterday I I had to DNF at the Paris Marathon. I am trying to work out what happened.
About me and my training - I live in the UK. - I trained pretty well. 5 x 20 milers, including 2 at 22 miles. Final one (3 weeks ago) was 20 miles at 8:50 pace. This felt ok. And if marathon was on that day I could have dragged myself around for sub 4 hours marathon. Not really any speedwork. - I did almost all my training alone. Over the winter. I didn't have any warm up races. - I am not overweight but not trim like most marathoners - I did the Frankfurt marathon 2 years ago. Aimed for 4 hours, ended up run/walking after 17 miles. Result was 4:18. - I had a 2 week holiday in North America in my taper where I still ran. It was pretty cold and still some snow
The DNF - goal was to break 4 hours. Seemed reasonable from everything I had read and how training had gone. - Paris was very hot yesterday. 20C and not much shade - I started slowly. 9:10 min/miles with the aim of a slow first half and a negative split. - from about 6 miles I noticed I was still running 9:10 and it was not getting any easier - after 9 miles I had almost resolved to give up. It just felt so hard. So much harder than my training runs. - It was hot, I felt out of energy. My heart rate wasn't really high but above where I wanted it to be. My legs seemed already heavy and my pace had dropped to 9:30 min/miles. - after 14 miles I ran walked for first time - after 16.5 miles I saw my wife in the crowd and thought this was a good time to quit. I couldn't imagine run/walking for 10 more miles so it seemed pointless continuing.
Understanding my DNF the day after (today!) - today my quads feel like lead. This seems like an important clue! After even my 20 milers my legs never feel sore like this (and in those runs I was running faster than yesterday!) - could it be that I just deal with the heat very badly? If so anyone else have this problem? - given that a similar thing happened in my only other marathon - could I just be bad at racing/tapering/fuelling? - my holiday in tapering was not wise but could jetlag have this effect?
I remain optimistic but before I make a plan I need some help as to why this has happened. Please help!