Very short: what is the best pace strategy for a Marathon?
A little longer: usually when I participate in a race (10 km, 15 km or HM), I tend to run the first part of the race at a pace that is 5-10 seconds slower per km than my target pace. And then make up for that during the rest of the race.
But is that a good strategy for a Marathon as well? Or should you aim at the same pace throughout the race?