If you aren't lucky enough to be on the Challenge then you can track the progress of those Challengers with SPOT devices who have registered with the ever helpful Donald at Adventure trading here.
I think I've finally got to grips with my SPOT connect. it has been quite a steep learning curve for a technodummy like me - thanks again to the extremely patient Donald.

Many thanks for posting the link Ali,

I've also now added a link at the head of the message board; the map should be viewable at the Challenge's TGO Magazine web pages shortly.

Oops! I forgot to register mine. I thought I had something still to do!
Too much to do before I'm let of the leash for 2 weeks, where has the last couple of months gone?