Fortunately, my feet seem to have adjusted to my new socks and I didn’t get any new blisters from that. So  continued on Wednesday with a six-mile run, along the usual route, which was again, very tiring. I decided that in order to meet my target time of 5h:30m, that I would not train on Thursday or Friday, but instead give myself a chance to rest before the long runs of the weekend.

It was surprising just how much I missed running after just two days. When you get used to running five days a week, having a day or two off really becomes noticeable. On Saturday I did another six-mile run along the usual route which was again moderately tiring.

Sunday was a day I was looking forward to, but with a certain apprehension. Sunday’s run called for a ten-mile run – the longest yet in my training for Dublin. On each subsequent Sunday the distance will increase dramatically – next week is 12 miles, the week after 14 miles and so on. This means I’m finally moving out of the mild build-up section of the training into the hardcore fitness building section.

My route for this fairly epic nine-mile run took me from my usual starting point, around the headland and across South Bay to the Aquarium Top roundabout. From there I continued on towards the Spa and ran about as far as the old Victorian sea defences stretched, which is basically where the South Bay finishes. Then I ran up and down a gravelly hill and re-traced my steps all the way back to the roundabout, where I ran up Valley road, passing under Valley Bridge. A few meters after that I turned around and headed back towards the roundabout.

From there, I ran all the way back along the South Bay, around the headland and followed my usual route to the finish, where I started from. I had set out fairly late, having forgotten several things, including my energy gels, which I would use for the first time whilst training for the Dublin Marathon, which put me behind my desired start time, so by the time I was running back along the South Bay, the streets were getting fairly busy and I had to a lot of weaving and dodging, which I don’t like doing because it breaks my concentration.

I wasn’t feeling very tired at all at that point, but then I had only done about four miles. By the time I was running around Peasholm Park, with eight miles behind me, I was really feeling it. I’m talking serious exhaustion here, almost slowing down to walking pace. However, I didn’t let a little thing like fatigue stop me, knowing how i’ve suffered much greater exhaustion when running the Edinburgh Marathon, I could handle this. It wasn’t pleasant, but I stuck in there and made my home, an hour and forty-five minutes after I set off.

So during Sunday’s 1h 45m run, at roughly half-hour intervals, I ate a tube of carbo-gel along with plenty of water. Carbo-gels are concentrated carbohydrate (the body’s main source of energy). The texture is rather unusual, like eating PVA glue, except this was orange flavoured.

So did they work? Well, I could certainly gauge how much energy I had at different points and could predict when I was getting tired. In fact, I was quite impressed with my performance, given that I managed to run for1h 45m virtually non-stop without feeling totally knackered at any point.