I still have not gotten past the 20 mile wall.
16.6 miles and leg locked up again.
Turned and walked (ran a little) back to car for total of 19.25 miles today.
Overall pace 10:12/mile (with a must faster pace on the first 14 miles, slower running on the next 2.6 until I mostly walked the last 3).
Here's hoping the taper, extra yoga, stretching, and pool running will have me ready for race day.