For Newcastle/Gateshead runners there is good run from Blaydon rugby club if you head up the railway line and take a left after about a mile up a hill. It takes you up to Tanfield, from there you can run back via Dunston or head over to Beamish and Causey Arch You can even head down the Tanfield Railway line towards from there tp the Angel of the North and Gateshead
I have spent a little more time looking at the formula and in essence for me to attempt to run 02:52 marathon, it would have me run the first HM at 06:23 per mile. Then allow a progressive slow down of 3 seconds per mile. So my final mile would 07:02. About a 5 minute slow down in second HM
Having people pass in the second half would be tough, there is a "psychological" feel good factor to chase people down that are slowing down when I ran a negative split. There is also the danger that I might not slow down enough and run even faster
The 5 minute split seems a little wide and would feel happier if this was a 3 or 4 minute split. Talking to him tomorrow so will see what to decide. Happy to risk trying it though if it is to be 5 minutes.