The marathon class is a timed event. 3 hrs. + finish the lap you are on. You can stop early and NOT be disqualified. The flier says 7 laps. This is an estimate from last year’s winner.
Please pardon our dust – we have moved servers and will be continually improving the site throughout the season. If there is anything you wish to see added, please do not hesitate to post it as as a comment on the site!