12 Miles Tomorrow?

My training plan says I am to run 12 miles tomorrow. Today, doing three on a small 69 foot elevation gain I pulled my hamstring or periformis again. It has been throbbing on and off all day.

I would rather hear my Half Marathon was tomorrow, than do 12.

I hope I don't hold Heather back too much, and I hope I remember to stay slow and easy as that is a LOT of mileage. I have never ran more than 11 miles.

Here are photos from today's run at the Portland Color Run.