Cambridge E-Bike lending Library - https://camberville.ebikelibrary.org/
Cambridge E-Bike lending Library - https://camberville.ebikelibrary.org/
Discord Cargo Bike Forum: https://discord.gg/vfRAqvzeSf
Bike buses are groups of families who cycle together to school. See https://www.bikebus.boston/ to find active bike busses or resources on how to start one.
Mass Streets Blog https://mass.streetsblog.org/ Great place to keep informed on new infrastructure.
Other organizers of bike rides which you may enjoy:
Bike to the Sea: https://biketothesea.org/
Cyclopolitan: https://linktr.ee/cyclopolitan
Somerville Illuminations Tour: https://somervilleartscouncil.org/illuminationstour
Belmont Family Cycling https://www.facebook.com/groups/271941052151557
Here are some links to organizations you could get involved with if you are interested in improving bicycle infrastructure and safety or promoting bicycling:
Massbike: https://www.massbike.org/
Arlington
Arlington Bicycle Advisory Committee: https://www.arlingtonma.gov/town-governance/boards-and-committees/bicycle-advisory-committee-abac
Everywhere Arlington Liveable Streets: https://www.facebook.com/profile.php?id=100064862975352
Belmont
Friends of Belmont Community Path: https://www.facebook.com/belmontcommunitypath/
Boston and Greater Boston
Boston Cyclists Union: https://bostoncyclistsunion.org/
LivableStreets Alliance: https://www.livablestreets.info/
Cambridge
Cambridge Bicycle Safety: https://www.cambridgebikesafety.org/
Friends of the Grand Junction Path: https://www.facebook.com/GrandJunctionPath/
Memorial Drive Alliance: https://www.memorialdrivealliance.org/
Cambridge Bike Give Back: https://www.cambridgebikegiveback.org/
Malden/Everett/Revere etc
Bike to the Sea: https://biketothesea.org/
Lexington
Friends of Lexington Bikeways: https://www.bike-lexington.org/
Medford
Medford Bicycle Advisory Commission: http://www.medfordbikes.org/
Walk Medford: https://www.walkmedford.org/
Somerville
Somerville Alliance for Safe Streets: https://www.sass-somerville.org/
Somerville Bike Committee: http://www.somervillebikes.org/
Somerville Bicycle Safety: https://somervillebikesafety.org/
Friends of the Community Path: http://pathfriends.org/
STEP: https://www.somervillestep.org/
Watertown
Watertown Bicycle and Pedestrian Committee: https://www.watertown-ma.gov/237/Bicycle-Pedestrian-Committee