Mathematics trails have been in use for more than 40 years. A special outdoor learning environment that provides us interesting insides in the dissemination of such new forms of learning through its history. Both ways of dissemination can be found. We will first have a look at the steady development through a community of practitioners in the United Kingdom. The second way is the fast dissemination through a single multiplier, starting with Dudley Blane in Australia. In addition, the evolving variety of ways to do a mathematics trail is also part of this article. Keywords: mathematics trails, ICMI, mathematics education, history, outdoor education