Today I wanted to break my average speed record of 28km/h for 5 hours riding this...
I almost did it for the first 64km. 27.3km/h average, cruising between 30-37km/h where it was safe.
Now, my legs where telling me that 35-37km/h was a go, but I know from experience that my body can't supply that much energy to last for 6 hours at that speed - regardless of how much I seem to eat. I was right. I got to the island I was heading for did a whole 20 minutes of mtbing, but since the bike is set up to be efficient on the road its not ideal. Still it was a pretty if steep trail. My legs are conditioned for long distance medium pace and this was a real change.
All good so far. But, right at 100km my energy levels droppped like a stone. I was snacking the whole way to try to keep the energy up. I resorted to chocolate and cola at one point, but that was a temporary boost at best.
Now the average speed drops to 24.8km/h. To be fair there was a head wind for most of the way and I got stuck behind the slowest group ride in history on the mup part of the course... too many people to pass. Still, I could feel my energy flagging... not because of muscle fautigue either, but because the energy simply wasn't there to be used.
I know that athletes can ride longer distances faster than this. Sure they are fitter - but this wasn't a case of not being able to. It was a lack of fuel. I feel good, no sore muscles, my heart rate wasn't all that high.. in other words the engine was doing fine. So, how do I make sure I have enough energy to keep up the pace? I ate a huge dinner last night, had breakfast, took a lot snacks with me. but it still wasn't enough...