Finland has 1,343 kilometres of border with Russia to defend.

Sources

• PrimaryFinnish Border Guard (Rajavartiolaitos) - Year in Figures 2024Finland's eastern border is 1 343 kilometres long. The eastern border is also the external border of the European Union.
• SecondaryReuters - Finland completes first 35 km of fence on Russian borderThe fence will eventually cover 200 km of the border's total 1,344 km length.