Copy and paste from the website , I assume this is the first year it would work like this, with 15 minute breaks between waves: The race will now start in 6 waves - please check below section on "Summary of start and cut-off times" for details on cut-offs for each wave per discipline. Please Note: These are preliminary start times and can be changed up until race briefing on Friday, 18 January 2013 at 18h00. Wave 1: 06h45 - PRO Athletes Wave 2: 07h00 - Age Group Men 18 - 29 Wave 3: 07h15 - Age Group Men 30 - 39 Wave 4: 07h30 - Age Group Men 40 - 54 Wave 5: 07h45 - Age Group Men 55+ & Age Group Ladies Wave 6: 08h00 - Teams The cut-off time for the swim is 1h10min from the wave start.