About 7 hours for around 120K, first and only so far.
I could probably cut a few hours off easy, but I was completely unprepared for the trip... going out was done in two hours with a good tailwind, return 5 hours against the wind, wich seemed to pick up over the ride...
I only had room to carry one watter bottle, was planning on stopping for gatorade as I needed... well it turns out about 30K of the route was pretty much in the middle of nowhere, no place to buy anything... I had some serious dehydration for about 10-15K during the return, had to stop at someones house for water.
Also had 2-3K's on the return where I was starting to fall asleep on the bike (wierd)... not fun espescially when you get a bit of traffic coming by...
And I wasn't really getting near my threshold for most of the trip...