Heading north for Treriksröset – the three-nation marker post where Sweden, Norway and Finland meet – walk over the bridge to Kaaresuvanto in Finland, from where a daily bus leaves at 2.35pm (Finland is an hour ahead of Sweden) for Kilpisjärvi (journey time 1hr 40min). From June to mid-September a second daily bus leaves at 4.25pm for Tromsø in Norway, travelling via Kilpisjärvi. From Kilpisjärvi, there are two ways to get to Treriksröset. One of these is a hike of 11km down a track which passes through an area of dwarf woodland before running around a small lake to reach Sweden’s northernmost point; don’t forget your camera and mosquito repellent. The path then continues (14km) towards the northernmost peak in Sweden, Pältsan (1445m); the going here is rocky in parts.
The STF cabins (no advance booking; mid-March to April & mid-July to mid-Sept; dorm beds 370kr) at the foot of the mountain, boast thirty beds and a sauna. There’s an easy hike (40km) from the cabins back to Keinovuopio, then cross the river to the village of Peera, on the main E8 road in Finland, where you can catch the bus back to Karesuando (daily; approximately 1.45pm, also June to mid-Sept daily at 11.25am; check Finnish bus times at w matkahuolto.fi).
Alternatively, you can reach Treriksröset from Kilpisjärvi by getting a boat ride across the lake on M/S Malla, which shortens the hike to just 3km. The boat requires at least four passengers to sail (late June to early Aug 10am, 2pm & 6pm Finnish time; 45min; €25 return).