I did my second half marathon this weekend in Ealing which is quite hilly. Took it slowly in the first half but still found myself running out of energy and walking for a bit towards the end. Managed it in 1:45:13 which is precisely 30 seconds quicker than last year. One whole year of training to shave off 30 seconds off my time... feeling a bit demoralised and not in the mood to run again for some time.