Did a quick spin round Beausale this morning. 20km in 42 minutes. I had planned to go as fast as I could but I tried to keep my HR within "the Zone" (139 - 149) instead. I maxed out at 160 and dropped off to 120 downhill. My average was 147 though which is spot on as the max HR for my age is 175.
100k tomorrow, watch this space...
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