. So crowded was that 50,000-strong field that you gave it just 51 per cent for PB potential.That's the paradox of any big, famous race. The sheer weight of numbers makes it nigh-on impossible to sprint round the course unless you start at the very

player.The crowded start was my main beef about the race. I adore my running but I'm under no illusions about my pace; like Jimmy Savile, "I run marathons, I don't race them". So I lined up dutifully (and, it turned out, pessimistically) in the 2:30 area

labour I had, and he was my biggest baby. Research suggests that it is safe and probably even beneficial to exercise in pregnancy, as long as your pregnancy is normal and you adapt your exercise. See your midwife regularly, and review your training