2011 Summer Groove 15 hr in Ionia.
http://apexoutdoorgear.com/groove.htmlI am terrible at night o on 1:24000. Or, I should really be more vigorous about pace counting and bearing style nav. You cannot go by features, when I'm not sure the local orienteering club would even use those features on a detail 1:10000 o map, let alone 30 year old USGS.
Lots of mistakes makes for DNF #2. A bit frustrating. I am pleased to know I could go for 15 hours though. I think several others DNF'd as well; I'm curious to know how many.
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13 of 21 teams dropped or DNF'd. Tough course!