So folks - the horse racing circuit. Here's a few ideas about how it could work.
If you want to build a section then you would be allocated a section to build. The sections would be connected by say a three block wide 'checkpoint' for want of a better word.
I think that traps and or shortcuts etc could be fun - but non fatal traps obv. You can do whatever you want with your section - just make a 3 wide track or maybe go underground, or maybe even build it up in the sky? Put in a few bits of redstone to trip up your opponents?
Do players think there should be a maximum section width, or would we be happy to have it unlimited?
I think the sections should be in half kilometre sections to allow you to get some decent stuff in.
It was suggested that I temporarily cover the sections in tiles so it doesn't come up on the dynmap and we would have to have a gentleman's agreement not to peek.
We could also have teams if players so wanted to to make building easier. Once the track is built we can arrange races via the sites.
Please put up any ideas you may have and let's get the ball rolling. Once we start I suggest some sort of timescale is set so the project gets completed. If a player is unable to complete a section it can always be reverted to just a standard, flat fenced in track.
Comments welcome - cheers. Ham
Edit - here is a pic showing what half a kiometre looks like. The red lines represent 0k .25k and .5k to give you an idea of size. If you visit in game the lines are also in the world as strips of glowstone block