First ten mile tempo in seattle (actually 9.9, but I'm not sure that includes the 20 second stair climb). Started at Woodland Park, then ran to Green Lake, Ravenna, Burke Gilman Trial, Freemont Bridge, Westlake Trail to the Starbucks drive through at Lake Union Park (official finish line).
Total time of 61:38 (6:13 pace). Terrain is very flat and fast for the most part. There are a few downhills, but they are on gravel trails, as well as the aforementioned stair climb.
I took the following splits:
Start to Burke Gilman 4.76 in 29:49 (6:16 pace)
Burke Gilman 3.66 in 22:34 (6:10 pace)
Stairs+Bridge+Westlake: 1.47 in 9:14 (6:17 pace)
The bridge rises to allow ships to pass, and the barriers started coming down just after I had crossed, so I was fortunate that I didn't have to stop.In the future I'll need to leave earlier to ensure that I'm crossing the bridge prior to 9am (it was 9:10).