Borsboom, Piet

Pace over time: 14 races from 2009 to 2026, ranging from 3.66 to 12.30 kilometres per hour, where higher is faster. A second, age-graded series is drawn above it; the gap between the two is the age credit.

• Actual pace
• Age-graded pace

1 result is not on this chart. They are counted in every statistic above and listed in full below — backyard ultras carry a lap count instead of a pace, which is the number that means something in that format.