This is the heart rate and altitude graphs from my run in the Jungfrau Marathon. It tells quite an interesting story. You can see how slowly I was going for the first half. My heart rate was hovering around 130bpm when it should have been around 140. Quite a few of the dips in heart rate are from when I stopped at the drinks stations but those towards the end of the race are when I was held up. The point at which we came to a standstill just around the bend from the Wixi drinks station is particularly noticable. My heart rate slowed to 95bpm. How ridiculous is that during a marathon.
I've also superimposed the ascent (height adjusted to account for base height) of the Chiltern Hills where I train. Quite a difference. Even Ben Nevis would only come about 80% of the way up the graph.
I'm seriously considering doing it again next year to see what time I would get with a more focussed attempt at getting a good time. My time of 5h 8m equates to a 3h 20m normal marathon. I'd hope to do a 3h normal marathon so there's clear room for improvement.
Better start training then!
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