i stopped smoking and started running 6 months ago. I'm 44 year old female. Fairly fit due to hill walking before starting running but hadn't done any 'proper' running for decades.
First couple of months I was doing so well, got 5k down to 26.30, 10k to 58 minutes
but I can't go above 8 miles without legs giving up and can't go any faster on 5 or 10k
my heart rate for runs when I'm pushing it is 175 which is max for me.
I'm running 3x a week (fast 5k, one long run and a medium type run too or interval or hill training) covering about 15 miles altogether and also doing a strength and conditioning gym class.
I want to be able to do a half marathon but seem to have been improving then stuck at this level. Have had a few novice type injuries along the way too.
Any tips you knowledgable lot?! X