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P-Index Table 
The number of 5k runs that satisfy the rule 'p runs at least p times'.
For a P-index of 10, you would need to run more than 100 times, with at least 10 runs at 10 different events.
P-index Number of runners
19 1
18 2
17 6
16 10
15 9
14 28
13 57
12 117
11 236
10 611
9 1.3k
8 3.2k
7 7.7k
6 18k
5 44k
4 105k
3 279k
2 954k
1 6.1m
Updated 2026-08-18 04:00 UTC