Centurion Running
Please find below full details of our 50 and 100 mile Grand Slams including how to enter, which events are included and all of the current and historical results.
Grand Slam awards recognise those who complete all four Centurion 100 mile or all four Centurion 50 mile events within a calendar year.
GRAND SLAM ENTRY
Entry to the Grand Slam is automatic for anyone who enters each of the 50 or 100 mile races individually.
But the Grand Slam can also be entered as a whole. There is no additional benefit to entering all four races at once, other than that it saves entering each one individually.
The 2026 50 Mile Grand Slam opens for entries on 26th April 2025 at 1000 via this link.
The 2026 100 Mile Grand Slam opens for entries on 24th May 2025 at 1000. The link will be available here in due course.
The refund policy remains the same as entering each event individually. Four weeks up to race day you can receive a 70% refund on the race entry fee for that individual event or events, if you choose to withdraw from more than one at the same time.
The Grand Slam of 100s award is recognition for those who complete all 4 Centurion 100 mile events within a calendar year:
- Thames Path 100
- South Downs Way 100
- North Downs Way 100
- Autumn 100
The Grand Slam of 50s award is recognition for those who complete all 4 Centurion 50 mile events within a calendar year:
- South Downs Way 50
- North Downs Way 50
- Chiltern Wonderland 50
- Wendover Woods 50
In order to be eligible for the awards, entrants must enter and finish each of the individual Centurion 50 or 100 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.
