Henley leaderboards - methodology
Henley Royal Regatta is rowed over 1 mile 550 yards (~2112m) as head-to-head match races (two crews, knockout draw). Intermediate times are taken at two points down the course - The Barrier and Fawley - as well as the Finish.
Only the leading crew is timed at each point. There is no time for the trailing crew at the Barrier or Fawley, and the losing crew gets no finish time - just the winning margin (the "verdict").
Marker distances from the start are Barrier 637m, Fawley 1047m and Finish 2112m. They don't affect the ranking at a given point - that's just a constant scale - only the displayed % and 500m-split values.
Because only the leader is timed, a split at the Barrier or Fawley normally belongs to the eventual winner. But sometimes the crew that lost the race was ahead at that point - HRR marks these with a star. In that case the split is the losing crew's time, and we credit it to them and tag the row LOST RACE. The finish time is always the winner's.
By event (raw time). Within each event, crews ordered by their fastest time to the selected point. The neutral, always-valid view.
% of Henley record. The crew's time as a percentage of the Henley course record to that point: record ÷ time × 100. The record used is the one standing going into that year, so a crew that broke the record tops 100% and is marked NR. This avoids the record shifting mid-regatta from skewing the table.
% of World Best Time. Each split is scaled to a 2000m-equivalent pace (× 2000 ÷ marker distance) and compared to the World Rowing best time for the boat class - the same benchmark as the GMT% calculator, so it's comparable to the rest of the site. Boat class comes from HRR's event class (Henley's open events are men's, so e.g. an open four maps to M4-).
Important: WBT is a 2000m flat-water benchmark, and Henley's distance and stream conditions differ every year. So % of WBT is only meaningful for ranking crews against each other within a regatta, not as an absolute statement of speed.
Every table shows a per-500m pace, derived from the time and the distance to that point (Barrier 637m, Fawley 1047m, Finish 2112m). Note crews don't simply go fastest off the start at Henley - the stream varies along the course - so a crew can read slower per 500m at the Barrier than over the full course.