Congratulations to all the marathon runners!!!
Here's a page to analyze your pace:
http://wsxnyc.org/membershipdb/pacecalcMarathon.php
Here's an example:
This is actually Helen's pace which was very good actually.
Marathon Pace Calculator
Lap Time:
00:22:39
00:22:59 (1.4716703458425% change from previous lap)
00:23:13 (1.0152284263959% change from previous lap)
00:23:23 (0.71787508973439% change from previous lap)
00:23:46 (1.6393442622951% change from previous lap)
00:22:36 (-4.9088359046283% change from previous lap)
00:23:19 (3.1710914454277% change from previous lap)
00:22:53 (-1.8584703359543% change from previous lap)
Lap Pace: (min/mile)
00:07:18 5K
00:07:24 10K
00:07:29 15K
00:07:32 20K
00:07:40 25K
00:07:17 30K
00:07:31 35K
00:07:22 40K