I went into the run with no expectations other than to complete it. After struggling with my breathing for 10 minutes or so I realised I couldn't manage it at my normal pace (which was perfectly fine in weeks 7 and 8), so I slowed down until I'd run for 27 minutes. Then my favourite running song started playing, and I had to run until it was over. So I ran for 5 more minutes, running for a total of 32 minutes! I had honestly not expected to even come close to my PB distance since I'd slowed down so much, but I did 5.12km in 42 minutes (counting my warm up and cool down walks). I will stick to running for just 30 minutes for the next 2 runs.