10mile Cycling TT
Posted by thepeteplan on April 23, 2009
I mentioned having a go at a 10mile cycling TT last year sometime, where I punctured around 2miles into the TT. My bike has sat in the garage mainly unused since. I heard a couple of days ago that the same cycling club was running a “come and try it” 10mile time trial on the same course last night, so I thought it was about time to have another go. So with 0 miles ridden in the last 6months I got my bike out of the garage on Tuesday evening, fitted the pump I had bought, and filled the saddle bag up with a spare inner tube and tyre levers, put some air in the tyres, and I was all set to do a TT where I could at least replace the tube if I did puncture and ride back to the car.
After arriving at the start of the TT I got my bike sorted, and went for a warm up ride the opposite way down the dual carriageway. I did 4 miles in total, and timed it very badly getting to the start point just as number 11 was setting off (I was number 13) giving me a little under 2mins before my start!
With no cycling training, and no knowledge of how to pace it, I picked 30mins as a bottom marker, and so decided that I wanted to try to keep my speed at or above 20mph. I had a moment of doubt when I approached the turn whether it was the right place to turn, as the garmin GPS on my bike said I had done 4.6miles or so, so I went around the roundabout very tentatively looking down the road further to see if there was another roundabout close by. As I came off the roundabout I was on 4.9miles, so I knew I was right then. It was at this point also that number 15 passed me (14 passed me 6minutes into the race – they set you off every minute), and I decided I wasn’t trying nearly hard enough. The second 5 miles went by so much faster than the first (ok, so I was riding faster, but still…), and before I knew it I passed 7 miles. I then pushed on harder in the final 2 miles hitting my maximum speed at the line, but feeling like I could have carried out a good few more miles now I was getting into it.
This is a graph of speed and HR against distance taken from the Garmin 305 bike computer:
Which hopefully gives a better picture of the ride and how I paced it. I think it is clear from the heart rate that not only did I not push it all that hard, but I actually took it easy at times – 160-165 is the sort of HR I would expect to maintain during most of an erg half marathon, for comparison.