Please share one or more preferred destinations if you have a preference, taking into account the travel time and a possible place to eat, so I can give better suggestions. Good options include, for example: Nuuksio, Sipoonkorpi, Pihlajasaari (waterbus operates May 17–August 31), Seurasaari, Uutela, Ramsinniemi, Kallvik, Vartiosaari, Helsinki Central Park, Espoo Central Park, Pentala, Porkkalanniemi, Kopparnäs, Linlo, Meiko, or any other nature reserve or recreational area in the Uusimaa province. A nearby natural area or quiet city park next to a meeting venue also works, as long as it's somewhat peaceful. The most restorative experiences are found farther away from city traffic.
Feel free to share your wishes, ideas, or questions (regarding the event schedule, catering preferences, accessibility, or anything else).