As you are probably aware I am on half marathon training, three runs a week on Monday 4-5 miles, Thursday long run (up to 9.3 miles so far) and Saturday parkrun 3.14 miles.
My long runs started at 6-7 miles as that was my run anyway so I did a 7.1mile, then a 7.3 mile, followed by a 5.1 mile Christmas week, then a 8.4 mile and now a 9.3 mile this week. My legs are not happy after 8.5 miles so 9.3 miles was a push. I did do a 10 mile run in October and my legs were knackered then too. Will my legs get stronger soon as I have to increase more distance for April (I have 2 weeks abroad with short runs in March). Prior to the run I eat a banana and biscuit with a decaf tea. On the run I had an isogel at 4.5 miles and 7.2 miles as I felt tired, breathing was fine. How can I improve?