Hmm. I did 4.3km and crossed the red line at least twice which adds a lot.
PS I may have mentioned this before but if you go to:
https://www.attackpoint.org/racesplits.jsp/race_30... and click the question mark after your name, enter your SI number then a link to the race splits and thence the race details will appear on your log automatically - for that race and ALL future races you use that SI stick for. Incredibly useful for review, analysis and nostalgia.