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I'm interested in people's thoughts on negative splits, particularly on the run.
Lets say you're aiming for a 4 hour marathon - are you really more likely to hit that target if you run the first half in 2:05 as opposed to 1:55?
Isn't there a real danger of leaving yourself too much to do in the 2nd half of the race - which you have to balance with the other danger of blowing up?
So far in most races I've finished slower than I've started but hit a lot of goals this way so I'm less than convinced about the need for negative splits.. but would welcome the collective real-world experience of all you forumites!