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I did the Dartmoor Vale Half Marathon yesterday. I managed a PB of 1:50:17 which I was pleased with (OK, I confess those 17secs are a bit annoying...!), which I'm putting down to more focused training and having recently joined a running club. I haven't done that many different courses, but I'd say DMV is quite a tough course - there is a steep hill in the first half of the race, but then it does undulate nicely down to the end.
I know the course well and had "a race plan". However, I struggled in miles 10-12 (my splits confirm these were comparatively slow), which is exactly the part of the race I was expecting to "crack on" and recover lost time from the big hill. When I say struggled, I mean feeling sick and dizzy, and running felt very laboured. I felt good up to mile 9 (I was more or less on target with my plan at that point), and I also did manage to finish reasonably strongly which I was pleased with.
Something similar has happened previously, so what could I do to improve the 10-12 mile section of a half? I.E., is there any fueling advice (I previously tried Go gels but didn't get on with them - too sweet for me)? More LSRs? On an LSR, purposefully try to increase tempo for a couple of miles at around 10miles? Anything else?
For info, for the last 8 weeks, I've been doing 4 sessions a week. This comprises of 1 LSR (10-13 miles) with the Club, 1 speed/hill session with the Club, 1 recovery session and 1 other session of 6-8 miles where I do what I want (mixed speed/intensity, tending towards the quicker side for me). I've been doing 25-35 miles per week over that time (the 25 was when I was ill in one week). On the run, I feel I took enough water from marshals and I carry a bottle with a Torq Energy drink mix - I didn't feel dehydrated. Also, the conditions were good (I.E,. not too hot/cold).
For info, my splits from the race are below: