This is not just another 100-miler.
The Round 100 is a unique 100-mile trail ultra following the historic Leicestershire Round, a waymarked route that circles the entire county through rolling countryside, ancient trails, farmland, woodland, country lanes and riverside paths.
This is the inaugural solo Round 100 — the first time this historic route has ever been raced as a complete ultra-marathon. When you cross that finish line, you won’t just have completed a 100-mile ultra — you’ll have become part of the history of the Leicestershire Round itself.



