Marathon pace

I need to do the first 21 miles of the marathon at a 16.66 minute mile or better if I want to not get caught at the cut off. Supposably, walkers who are slow and don't make it to Greeley by 1pm marathon day will be diverted to a different course. (I need to find out if that's still the case, or if they did that in years past). I was planning to do at least an 18 minute mile pace (so I can finish under 8 hours), depending on heat, how I'm feeling, all that, but I'll need really to do better yet.

A 16.66 minute mile pace will still put me in 7 hours 16 minutes.

I'll have to try for that in the 21 miler this Saturday. Yow!