Battle at Birdsall XC Meet
what course difficulty means
How much slower times run here than on a typical
cross country course:
+4% is about 40 seconds on a 16-minute 5K, 0% is typical, and a
negative number is a fast course.
Ratings already account for it, so a 133 run here and a 133 run
anywhere else are the same performance.
what a rating means
100 is the average runner in the athlete's pool;
a rating of 133 means 33% faster than that average runner.
Ratings are distance-normalised and course-adjusted, so a hard
course and a fast track land on one number. Each pool (high
school boys, college women, middle school…) has its own
average, and the HS-equivalent view puts every pool on the
high-school scale.
Team scores
Results
Rating scale
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