The Official Route and the Extended Route
The BHF London to Brighton 2024 official distance is 54 miles. I finished that in 4 hours 14 minutes, then continued to Shoreham and extended up the Downs Link to Christ's Hospital.
Total: 76.3 miles in 6 hours 33 minutes with minimal stops.
The extension was not unplanned. The decision to continue beyond the official finish was made based on the data available at that point: physiological load was within the 80% ceiling, the Lag Factor projection was manageable, and the conditions were holding. When those three criteria are met, continuing is the correct decision.
Comparing 2023 and 2024
In June 2023 I rode the same event for the first time in 4 hours 45 minutes, eight months after ending 19 years in a wheelchair. In 2024 I rode it in 4 hours 14 minutes and extended to 76.3 miles. The improvement is not dramatic. It is consistent. Consistency is the metric.
The Downs Link extension added 22 miles of mixed-surface off-road terrain after the official event finish. Off-road surfaces place different demands on joints that sublux and dislocate routinely. The additional load was accounted for and managed within the existing framework.
76.3 miles. 6 hours 33 minutes. The official event was 54 miles. The extension was where the real data came from.