(perhaps a little longer next year Geoff?)
Sorry, I make it approx 100 miles (this year 97) for several reasons. Many of the entries are families and with kids in the car ,and after a long drive to the event, that can be enough. another reason is logistics. Two legs of 50 miles require little marshalling but extend it and problems occur. I like to give time for entrants to enjoy themselves at the halfway stop.
Now if you want something organised just for your register, you only have to ask. I can nail a early Cotswold Rally (100 miles) to this years Front Runner (40 miles) it would take you from a village green in Oxfordshire to Cornbury House, a 40 mile stage back to Cornbury House and bak to the Village Green and how about a Pig Roast to end it.