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Background - whilst on vacation back in July (early) I got what I thought was an achilles/calf injury whilst out on a run. I stopped running for 4-5 weeks and went to the gym/walked instead.
I resumed running mid-August, took part in a 10k race which went well, after which during runs I started getting lower back pain - I figured this was because I hadn't run in a while. Note that all of my running has been on hard surfaces, and I have not bought new shoes yet which I need to do.
No longer get lower back pain, but the last 3 runs my speed has dropped considerably and I feel really tired. I have been run/walking these runs to allow for adapation and building up fitness again.
I have a half-marathon looming on Saturday and am wondering whether to take part or just walk it.
Maybe I need to start from scratch and build up the distance again.