This was a very consistent run for me. A little pain the last three miles, shortened my gel intake to every 5 miles instead of every hour.

Lap Time Distance 
1 8:34 1.00 
2 7:51 1.00 
3 8:04 1.00 
4 7:51 1.00 
5 7:56 1.00 
6 8:04 1.00 
7 8:44 1.00 <-- Eden park entrance and some of park.
             -- Not too bad.
8 8:27 1.00 
9 8:03 1.00 
10 7:53 1.00 
11 7:42 1.00 
12 8:00 1.00 
13 7:59 1.00 
14 7:49 1.00 
15 8:09 1.00 
16 8:19 1.00 
17 7:54 1.00 
18 8:12 1.00 
19 8:24 1.00 
20 8:24 1.00 
21 8:27 1.00 
22 8:06 1.00 
23 8:14 1.00 
24 8:30 1.00 
25 8:42 1.00 <-- the toughest mile... boring and bad road
26 8:23 1.00 
27 1:52 0.23

Restarted my Garmin after 26.22 passed: 
28 4:30 0.58