It is usually possible to enjoy a short walk in natural surroundings in most parts of Finland without special equipment. Most trails can be easily walked in sports shoes or walking shoes during dry weather, though hiking boots or rubber boots may be useful, as terrain can vary considerably even over short distances.
On longer trips it is vital to have the right clothing, especially off the beaten track. Hikers may have to cope with sub-zero temperatures any time from September to May in the north, or October to April in the south. Temperatures of 30 - 40 degrees Centigrade below zero are not unusual in Finnish Lapland. Layers of clothing that can be easily removed are preferable to thick clothes. Warm headwear, gloves and footwear can prevent frostbite.
In summer insect pests can be problematic for hikers in some areas.
Suitable maps of many popular hiking areas are available at bookshops or Karttakeskus (www.karttakauppa.fi).