Hi, I've been struggling with my midweek tempo runs recently.
Obviously, I'd like to complete them as required if I can, but if I'm struggling and something has to give, is it better to reduce the pace or distance?
For example, if I'm meant to do 5mi @ 8:57/mi and I'm struggling after 3 miles, should I reduce pace to finish the 5 miles at whatever I can do or should I do as much as I can at 8:57/mi and then warm down and stop?
Endurance at slower paces isn't too much of a problem; I'm up to 10 miles on my long runs now.
Thanks for any advice.