I am really looking forward to the 600K this weekend.
I plan on riding through the night with a nice break after the first 400k however I am preparing for the worst.
It looks like the afternoon high temp on Saturday will be 90f, so plan on hydrating.
The wind from noon to about 8 pm on Saturday looks like it will be about 20 mph with up to 30 mph wind gusts.
So, bring the sun block, put on your fastest wind cheating rims and we should all have a great ride.