I came across a web page listing Nordic walking world records.
A sampling of world records:
- 5 KM
- Men: Jor Hakkinen (Finland) – 21m 09s – Helsinki, Finland – 09-15-2015 (track)
- Women: Renata Jachimowicz (Poland) – 30m 01s – Tirano, Italy – 09-02-2018 (route)
- MARATHON
- Men: Marcin Michalec (Poland) – 4h 34m 25s – Jastrowie, Poland – 04-08-2017 (route)
- Women: Karen Asp (USA) – 4h 59m 57s – Portland, USA – 10-05-2008 (route)
There a lot more records on the pages. Browse to see what challenges you might want to take on or just to understand the scope of Nordic walking and how seriously people take it.