I’ve just noticed that the main map is not as accurate as it could be. These are divided up to parts but are a bit more accurate:
EuroVelo 10/13:
- R10/13 – part 1: https://pomorskie.travel/eurovelo/trasy/ev10-13-etap-1/ 
- R10/13 – part 2: https://pomorskie.travel/eurovelo/trasy/ev10-13-etap-2/ 
- R10/13 – part 3: https://pomorskie.travel/eurovelo/trasy/ev10-13-etap-3/ 
- R10/13 – part 4: https://pomorskie.travel/eurovelo/trasy/ev10-13-etap-4/ 
- R10/13 – part 5: https://pomorskie.travel/eurovelo/trasy/ev10-13-etap-5/ 
- R10/13 – part 6: https://pomorskie.travel/eurovelo/trasy/ev10-13-etap-6/ 

Connecting routes:
- R10 Ustka – Słupsk: https://pomorskie.travel/eurovelo/trasy/r10-ustka-slupsk/ 
- R10 – Karwieńskie Błota – Hel: https://pomorskie.travel/eurovelo/trasy/r10-kariwenskie-blota-hel/ 
- R10 – Jantar – Piaski: https://pomorskie.travel/eurovelo/trasy/r10-jantar-piaski/ 
 - R9/R10 – Przejazdowo – Pruszcz Gdański: https://pomorskie.travel/eurovelo/trasy/r9-r10-przejazdowo-pruszcz-gdanski/ 

EuroVelo 9/WTR:
- EV9/WTR – part 1: https://pomorskie.travel/eurovelo/trasy/ev9-wtr-etap-1/ 
- EV9/WTR – part 2: https://pomorskie.travel/eurovelo/trasy/ev9-wtr-etap-2/ 
- EV9/WTR – part 1 (alternative): https://pomorskie.travel/eurovelo/trasy/ev9-wtr-etap-1-prawy-brzeg-wisly/ 
- EV9/WTR – part 2 (alternative): https://pomorskie.travel/eurovelo/trasy/ev9-wtr-etap-2-prawy-brzeg-wisly/ 

This seems to be all there is. Unfortunately, my relations skills are lacking at best thus we would need someone capable of mapping this in OSM
