Pain in the knees/ankles is usual specially if you are overweight, today i extended my run to 12k (10k was my max until today) and was also feeling it towards the end, specially in the vertical tendon under the knee.
One thing that helps is to put ice on your knees just after the run, or at least to put the shower as cold as possible and keep it on your knees and ankles for a few minutes after every run.
Welcome! I was wondering who was the new guy adding me to Strava today
