The registration for the 35/65/100 is closed and I don't think you can register at the event, but there is a free "family" ride so you can cruise up an down 840 for free. Not sure how they could keep you from doing the longer rides since they are on public roads, I would just show up. 

Can you go out and ride without registering?

8:40am for the 35/65/100 9:30am for the free for all on sr840.

I live close by, what time does it start? I have to work mid-morning.

http://www.iamtheengine.org/the-eight-forth-fondo/

Any other middle Tennesseans out there riding the 840 Fondo this weekend? I am stupidly excited to ride the newly completed section of interstate 840 with the one and only Jens Voigt!

Middle TN, The Jensie and The Eight Forty Fondo