Finland have proposed to extend E16 across the country (currently it ends on Sweden's east coast).
https://unece.org/sites/default/files/2024-08/ECE-TRANS-SC1-2024-2e.%20.pdfUNECE meeting at the end of October
Route: Rauma – Tampere – Lahti – Kouvola – Kotka
Within Finland, the E16 would consist of main road 12 between Rauma and Kouvola, main roads 3 and 9 in Tampere, and main road 15 between Kouvola and Mussalo, Kotka. The length of the E16 in Finland would be approximately 400 kilometers.