Thanks everyone for your advice and concern. Miserable git - yes it's possibly overtraining, i have done a lot recently as you say.
I ran today and felt tonnes better even on the hills. Still a way to go but i am off on holiday soon so will try to recuperate a little.
Will keep you posted.
thanks again forum people!
I've just come back from a horrible 10 miler during which I had to stop several times to get my breath back and stop myself throwing up. At mile 9 i walked as my legs had nothing and then i ran the final mile home. I am an experienced runner having run countless half marathons etc and train about 25-30 miles a week plus cycling and gym work and gave done for years.
A month ago I took 2 weeks off running to recover from a calf injury (i still cycled and cross trained though) and since then I've felt like I've totally lost my mojo. I'm now back up to 10 miles but in the last 2 weeks every run has felt the same - dead legs, sick feeling, hills taking everything out of me, having to stop to get my breath. 2 months ago i was blasting up these hills and did a 21 mil trail race and a 16 mile trail race with no issues!
I am fed up and feel like giving up running right now! Any advice or similar experiences would be good to hear.