There is no single "freedom-to-roam law" but many laws codify exceptions to keep freedom to roam legal. The main codification seems to be that you are allowed t

There is no single "freedom-to-roam law" but many laws codify exceptions to keep freedom to roam legal. The main codification seems to be that you are allowed to infringe on others' exclusive rights to their property (outside their yard and plantations) as long as the harm is minor: wearing down surfaces by walking and cycling on them, flattening grass and meadows by (briefly) camping on them, picking berries etc. Here's a good treatment of the relevant laws, published by the ministry of environment (in Finnish): https://helda.helsinki.fi/bitstream/handle/10138/38797/SY30_2012_Jokamiehenoikeudet.pdf https://helda.helsinki.fi/bitstream/handle/10138/38797/SY30_...