>Gears and Wears>Pace bracelet
I find myself running by perceived effort. Typically, the pace takes care of itself. Just my $0.02. Good luck this weekend!
I just thought it was a neat (free) tool that some people may find helpful.
Agony of Da Feet (#2867)
Run to Win24 Marathons, 17 Ultras, 16 States (Full List)
(wow, been a while since that's been updated...)
Running the 2016 Boston Marathon for Children's Hospital
I think pace bracelets help the most by keeping people from going out too fast in a marathon.