An unpredictable half marathon
Canute blogged recently about his many months of preparation for the Robin Hood Half, in which he was originally targeting a time of 100 minutes. Although his aerobic fitness is better than at any time in recent years he's been finding it hard to complete the race-specific training. Key sessions were to be long runs with the last 5k run at half marathon goal race-pace (4:44 per km). He's been finding it difficult to maintain paces of 5 mins/km for any appreciable distance. I haven't done anything like that in training so can I be confident of running under 101 minutes?
My recent training has been okay without being brilliant. McMillan predicts a 1:40:44 half marathon if I run as well as I did at the Gold Coast 10k (45:11). Long runs have been a little on the light side: 15, 15, 20 and 20 over the last five weeks. Kilometres, not miles! I think I may attempt a long (15k) tempo run a week out from the race. Back in 1991 I completed such a run on the Wednesday prior to my half marathon PB — ran a lap of West Basin (15.5k) at 4:11 per km pace. On the Sunday I ran 1:21:38 which is 3:52 per km pace. So maybe if I could complete a training tempo run 33% slower than HM goal pace I'd be on target? That'd be 15k at 5:04 ks. I think that's possible.