Pretty quick race report...
Strava -
http://www.strava.com/activities/115770081
So after a tough winter (lots of cold days) we were blessed with a great day to run. ~50 degrees, not much wind, just perfect. The race is in Cape Cod and is relatively picturesque, very enjoyable.
Before running I decided to run this similar to my plan in Boston. I am hoping to run an 8 min overall pace in Boston, 3:30. That is a 12 min improvement on last year, so consider it a stretch goal. I made a plan for Boston as:
Miles 0-5: Run 8:05 pace, get warmed up.
Miles 5-10: Pick it up, 7:55 pace, start to run it.
Miles 10-16: 7:45 pace, begin to race it.
Miles 16-21: 8:15 reduced pace through the Newton Hills
Miles 21-Finish: 7:45 pace, finish it up
http://www.newyorkpersonalinjuryattorneyblog.com/uploaded_images/Boston-Marathon-Elevations-746389.png
So I simply grabbed the first 13 miles above and used it to guide me through the half as a test.
It was a big funnel at the start, spent the first mile or two doing my best not to run anyone over, taking it nice and easy. After 5 miles, averaged 8:04, right on plan. Felt great, was holding myself back through this period to ensure I don't go too fast.
Miles 5 - 10 I began picking it up a bit, still feeling great. There were some rolling hills that I pushed through to run at pace, but felt my body recover quickly on the other side of them. Ran this section at 7:52 pace, so slightly faster than I planned but basically right on.
At mile 10 I picked it up again, trying to find the 7:45 pace. Here I did start to feel a bit fatigued, breathing started to be a bit less controlled. I had to focus on making pace, whereas prior to this pace was natural. I was glad to see the finish line and would have struggled to keep this pace going for many more miles. Finished the 3 miles at 7:42 pace, 1:44 overall (my PR for a half is 1:39, FWIW)
So, now I have strong seeds of doubt for my Boston plan. If I just look at heartrate data, it appears to climb up until mile 7, at which point it flattens at 155-160 through mile 11, and promptly jumps up till the end. I interpret the data / feelings as that 7:45 is too quick for me right now, and I am running out of training time between now and Boston.
Do people think running a flatter pace in Boston (8 min pace throughout the race) is better? I was hoping to 'bank' some time early before the Newton hills so that I could drop pace a little and still be ok.
Anyway, interested in any feedback at this point, and advice on getting a little faster in the next 50 days.