(The total, cumulative miles ridden by each member, at each event attended together, any distance, for example at "Ozark Trail," Kerry completed the 75-miler and Tenney completed the 100-miler, that's 175miles toward their annual group mileage.)
(example: Spanish Peaks, Mt Carmel XP, Antelope Island, etc.) For mileage, only count miles where all group members have attended the same events, regardless of the distance they entered, or horses ridden.