Hard Steady 20 mile effort with Martin around Portsea Island plus loops. Warm and dry, target Marathon Pace 8:00 to finish in 2:40. Ran ok to 10 miles on seafront but knew I was working too hard and started to fall off the pace. Started to get very stiff and sore in hips and glutes, quite painful. Went through Half Marathon in 1:46:00, 16 miles in 2:11:00 and jogged in slowly to 20 miles in 2:48:00. Hard day out, feeling very sore.