The Grand Slam of 100s award is recognition for those who complete all 4 Centurion 100 mile events within a calendar year:
In order to be eligible for the award, entrants must enter and finish each of the individual Centurion 100 mile events within the cut off times of each race. Awards will be presented at the finish line of the Autumn 100, the final event of the year.
The Grand Slam of 50s award is recognition for those who complete all 4 Centurion 50 mile events within a calendar year:
In order to be eligible for the award, entrants must enter and finish each of the individual Centurion 50 mile events within the cut off times of each race. Awards will be presented at the finish line of the final event of the year.
To be listed as an official Downs Double finisher, entrants must enter and finish both the South Downs Way 100 and North Downs Way 100 within the cut off times of each race.
This is an informal series without awards, to recognise the runners achievement.