You are reading a single comment by @Smallfurry and its replies.
Click here to read the full conversation.
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
@Smallfurry
As posted above start slow. An extra 30s per km for the first 3/4 km's is'nt going to kill your time.
Both half and full marathon runners started at the same time on my last full marathon. I placed myself with some half runners and felt OK, if a little pushed, at their pace. I thought I was going to beat my PB, untill my body colapsed at 23 miles. Could have been for any number of reasons but I feel it was a case of too fast too soon.
Use this calculator to use your half time to calculate a full time.
http://www.liebreich.com/LDC/HTML/Various/RunCalculator.html
Your 20miles in 2:46, gives a marathon time of 3:44. But you cant really compare a racing time with a training time. Your half marathon time will be a more accurate measure. FWIW 3:30 is my (slightly ambitous) target time, and I doubt I could call a 2:46 - 20mile run 'comfortable'.
Once you have your target use the 'mile split times' to keep you on target during the race.