Is it the top 1% or less of females aged 57 who can run a pace of 5:34 for 10 seconds? 

Yes, a 5:34 mile pace is an elite level of performance, and the percentage of 57-year-old females who can achieve this pace, even for a brief 10-second sprint, is far less than 1% of the general population. This pace is faster than the "sub-elite" benchmark for that age group. 

--- Google,  AI Overview

Yesterday, I ran of pace of 5:34.  The speed was 10.8 on 2 runs for 10 seconds for each run.