Sunday, 6 November 2011

Dublin By Numbers

My average weight in kg over the last 2 months, down about 3 kg from my average racing weight over the previous 3 years (although I was 86kg at the start of this year). I reckoned my previous 82kg would get me a marathon between 3:08:58 (my 2009 PB) and 3:14, depending ontraining/form etc and that a weight of 76 kg would get me anywhere between 2:55 and 3:00, all other things being equal (i.e. training, motivation, etc.). Not in the least scientific but what is? Anyway it gave me something to focus on. For a runner I am still on the heavy side of the spectrum with a BMI of about 23.5. - could I reduce it to 20.5 and run a 2:40/45 marathon at 70kg??? Would I want to put myself through the sacrifice? Anyway I jumped into a marathon 3 kg off my 76kg target (more an aspiration than a target as I was not seriously chasing it) and scraped under the bar, probably because my form was better than ever before. My empirical formula would have given me a 3:02 to 3:07 marathon for 79kg.

5 The number of years since I ran my first marathon (2006 in Dublin) in 3:47:08. I came back in 2007 for a 3:22.08 and a very shaky finish (deja-vu last Monday). I returned again in 2009 for a 3:08:58 PB)


Improvement on my 2009 PB. €47:50

The total cost of everything I wore on Monday. Shoes €30 (March 2010), Socks €0.50 (August 2011 - part of a multi pack), Shorts €7 (June 2007 - the only ones with pockets to carry gels), Singlet €10 (Club Singlet July 2011). Getting under 3 hours Priceless. 161 Average HR 6:50 Average pace. The best guess miles splits cobbled together from the Garmin (missed loads of laps), timing mats and where I was relative to the "even split" pacers are:- Mile 1 - 7:14 easing in

Mile 2 - 7:00 Mile 3 - 7:01 Mile 4 - 6:51 Mile 5 - 6:48 - 34:54 for 5 miles (6 seconds ahead of target) Mile 6 - 6:52 - Effort feels tougher than expected and I'm not on target pace Mile 7 - 6:41 - Cranking it up on a gradual descent Mile 8 - 6:32 - Downhill out of the Phoenix Park and in the wake of the 3 hour pacers Mile 9 - 6:47 - Latched onto Pacers, all aboard Mile 10 to 13 - 6:44 - Riding the pacing train - could zone out for a while Mile 14 - 6:52 - Stuck in pacing group, felt I didn't have the juice to go it alone Mile 15 - 6:50 - Need to be running in the 6:40's as pacers could crank up the pace later Mile 16 - 6:50 - If I don't go now i'll be spat out the back of this group later, gotta go or else!!! Mile 17 to 20 - 6:42 average. Results put me 20 seconds ahead of the lead pacer at mile 20 Mile 21 - 6:42 Only 8 seconds ahead of lead pacer at 20.5 but pulled away on the descent to 21 Mile 22 to 25 - 6:55 average. probably slowed from 6:42 to over 7:00 by the time I was caught Mile 26.22 - 7:21 pace - more like 6:48 pace to 25.8 and a death march to the finish. 276th Place overall

2:58:37- 2:58:51 (253rd to 259th) Clock time and position of lead and last 3 hour Pacers.
I finished 38 seconds behind the last pacer - no wonder I thought I wouldn't make it over the last 100m. If the lead pacer had been 30 seconds further behind me at mile 25 (heading for a 2:59:07 clock finish) would I have run most of the last 1.22 miles at a more even and manageable 7:10+ pace, taking me to the finish line in more or less the same time without blowing up or was the 1 minute cushion the pacers had a blessing in disguise, getting me to push as hard as I could.
I had switched to overall time on the Garmin at about 2:38 - mentally saying that I had 20 minutes of pain left - and counting it down in 5 minute quarters. Once the pacers passed before mile 25 (2:50:xx) I stopped looking at the watch and just concentrated on sticking to them. I only looked at the watch again when I got dropped, but at that stage my mind was in no position to make any sort of analysis - so seeing 2:57 on the watch, when I had no reference to a finish line or the pace I was running at, was meaningless other than to instill a general sense of urgency/panic - just about when I had that one-way communication with my legs.

1 comment:

  1. Interesting numbers. I can say for sure you wouldn't have broken 3 at 82kg.

    What time at 70kg? Interesting question. You might train better at a lighter weight too. Yes, I'd say in the 2:40 to 45 range. Would it be worth it? Might lead to divorce if you end up looking old and scrawny and don't eat the wife's cooking. Ask Scott how far you can push these things!