The international border between Finland and Russia is 1,340 km (830 mi) long and runs approximately north to south, mostly through taiga forests and sparsely populated rural areas. It does not follow any natural landmarks, such as mountains or rivers. It is also an external border of the European Union and NATO.
It is patrolled by the Finnish Border Guard and the Border Guard Service of Russia, who also enforce border zones extending, respectively, up to 3 km (1.9 mi) on the Finnish side and at least 7.5 km (4.7 mi) on the Russian side. A permit is required for entry to these border zones. Electronic surveillance on the Finnish side is concentrated most heavily on the southernmost 200 kilometers (125 miles). In addition, the Finnish Border Guard conducts irregularly scheduled dog patrols multiple times daily to catch illegal entries into the border zone. In the Arctic region, Russia maintains its 500-year-old border patrol, with plans to upgrade Soviet-era technologies to reduce costs and improve efficiency by 2020.