Mother of pearl! We did the long Bowman gray route tonight (stats in the link). Did the first 10 K in 17:16, the second 10K in 18:10 and the 3rd 10K in 18:21. That comes out as 33.48 km/h for the first 30K.
Then I cracked and got dropped the first time. Did the next 10K on my own in 18:57, which I'm pretty satisfied with, and got picked up by the next group some time after that. I was able to hang on with them until we started up turbohill. There I got dropped the second time (in the same spot as last week), on the steeper section.
Despite being spanked twice, I was not DFL though. 5 more came in after me.
The whole 58K was done at an average 31.23 kmh.