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Looking for some advice here. I have been training consistently since May for the Dublin City Marathon and all has gone well or at least had until the last two LSRs. I have consistently upped the mileage while following the Asics plan and have no issues at 13, 15 or 17 miles. But last week and this week I had planned to do 20 miles.
In both of these at 18 miles I have tanked. I assume this was the dreaded wall. Legs go to jelly and had to walk/run the last bit. On Sunday I was in a 3/4 Marathon when I got to the final hills. I had been feeling very good and running at a nice 6:25/km (10:20/mile) pace.
For these LSRs I was doing a pace of 6:20 - 6:30/Km. My aim initially was a 4:15 pace on marathon day. But the doubts are now setting over where to aim on the day.
During training I have not used gels. I have relied on glucose tabs and a mix of honey/ salt in water. As I say, this plan worked fine all the way until beyond 18 miles.
So based on this, what should I do in 3 weeks time? Use gels and keep 4:15 or 4:20 in mind.
Just for reference the 5 miles this year was 40:50, 10 miles was 85 mins and the half was 1:58 (tough day!).