I don't know either about how if's measured, but it's good enough for me (unlike measurements done by my app, which are sometimes just ... weird).
Havdrup Familieløb got cancelled, but I plan to beat 49min on December 31 at the Champagnegaloppen race in Køge. There will be fewer runners and fewer turns to slow me down.
And last but not least: thank you! Very content with a new PR on record.