Current U.S. Trail Orienteering Rankings

The event algorithm is as follows: T O logo

Competitor’s ranking points,              
RP = A - B points  where A = Competitor’s score/Winner’s score x 100
and B = (Competitor’s time / Maximum time penalty) x (100 /  Winner’s score)       
Here is a single example:
A competitor has 17 controls correct with two  timed controls = 155sec.   The winner had 20 controls correct.
A = 17 / 20 x 100 = 85.0; B = 155/240 x 100/20 = 3.25; RP = 85 - 3.5 = 81.5 pts
For the Ranking list:
The sum of the top 3 Ranking Points for the last 7 ranking events are divided by 3 to determine overall ranking. Apparent ties are resolved to the 4th decimal place. Trail O Event Directors and Course Setters receive a credit equal to their top result.

Key:

Para = Paralympic class,

2011 Orienteering USA Trail O Rankings                                                                   detailed (xlsx)
Past years:

2010 U.S. Trail O Rankings (pdf) Tied rankings beyond 30 not resolved.
2009 U.S. Trail O Rankings