You could do as pen.sco suggested, as well as setting up a page on Google Sites.
I Haven't done this.
On our last trip we used Google Maps to plot our trip.
Then Linked it to our site.
September 17th/Oct 15th 2011We then were able to update the different stages of our trip. We would then post updates to FB as we went.
Look into Google Sites as a way of hosting your trip.
Hope this is of some help.
Happy & safe travels