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Thu
1/1
Swim
Sunday, Tuesday, Thursday Masters Swim
January 1, 2026
12:00am - 11:59pm
Pool Deck, Leventhal-Sidman JCC
For Ages 18–99
Every Sunday, Tuesday, Thursday from September 14, 2025 to August 30, 2026
Masters Swim at JCC Greater Boston is designed to cater to swimmers of all levels, offering a structured and motivating...
Sun
1/4
Welcome Baby & Early Parenting
Welcome Baby Mall Meetup - Natick
January 4, 2026
10:00am - 11:00am
Natick Mall
Let's stay warm inside and meet at the Natick Mall for a Welcome Baby Stroller Walk. Geared for ages 0-2, siblings...
Sun
1/4
Teen
Jewish Teen Foundation of Greater Boston
January 4, 2026
10:00am - 11:00pm
Teen Lounge
For Ages 15–18
Every Sunday from September 14, 2025 to June 28, 2026
Jewish Teen Foundation of Greater Boston (JTFGB) is a year-long program for Jewish high school students with different...
Sun
1/4
Premium Fitness Classes
Foundations of Ninjutsu and Self-Defense Demo
January 4, 2026
at 4:00pm
Group Fitness Studio, Leventhal-Sidman JCC
For Ages 13–99
Join us for a FREE demo! Rooted in the classical traditions of Japanese Budo, this class offers a dive into martial arts as...
Sun
1/4
Premium Fitness Classes
Foundations of Ninjutsu and Self-Defense Demo
January 4, 2026
4:00pm - 5:00pm
Group Fitness Studio, Leventhal-Sidman JCC
For Ages 13–99
Join us for a FREE demo! Rooted in the classical traditions of Japanese Budo, this class offers a dive into martial arts as...
Sun
1/4
Premium Fitness Classes
Youth Ninjutsu Program (Ages 12+)
January 4, 2026
5:30pm - 6:30pm
Group Fitness Studio, Leventhal-Sidman JCC
For Ages 12–18
Every Sunday from January 4 to March 15
The Way of Ninjutsu: Enter the world of Bu-do Taijutsu (Ninjutsu), a Japanese martial art that builds power, focus, and...
Mon
1/5
Karishim Swim Team
Karishim - Full Year - Junior Prep
January 5, 2026
12:00am - 11:59pm
Pool Deck, Leventhal-Sidman JCC
For Ages 6–18
Every Monday from August 25, 2025 to July 13, 2026
Mon
1/5
Karishim Swim Team
Karishim - Full Year - Junior
January 5, 2026
12:00am - 11:59pm
Pool Deck, Leventhal-Sidman JCC
For Ages 6–18
Every Monday from August 25, 2025 to July 13, 2026
Mon
1/5
Karishim Swim Team
Karishim - Full Year - Age Group Prep
January 5, 2026
12:00am - 11:59pm
Pool Deck, Leventhal-Sidman JCC
For Ages 6–18
Every Monday from August 25, 2025 to July 13, 2026
Mon
1/5
Karishim Swim Team
Karishim - Full Year - Age Group
January 5, 2026
12:00am - 11:59pm
Pool Deck, Leventhal-Sidman JCC
For Ages 6–18
Every Monday from August 25, 2025 to July 13, 2026
Mon
1/5
Karishim Swim Team
Karishim - Full Year - Senior Prep
January 5, 2026
12:00am - 11:59pm
Pool Deck, Leventhal-Sidman JCC
For Ages 6–18
Every Monday from August 25, 2025 to July 13, 2026
Mon
1/5
Karishim Swim Team
Karishim - Full Year - Senior
January 5, 2026
12:00am - 11:59pm
Pool Deck, Leventhal-Sidman JCC
For Ages 6–18
Every Monday from August 25, 2025 to July 13, 2026
Mon
1/5
Karishim Swim Team
Karishim - Full Year - High School
January 5, 2026
12:00am - 11:59pm
Pool Deck, Leventhal-Sidman JCC
For Ages 6–18
Every Monday from August 25, 2025 to March 23, 2026
Mon
1/5
Karishim Swim Team
Karishim - Fall - Junior Prep
January 5, 2026
12:00am - 11:59pm
Pool Deck, Leventhal-Sidman JCC
For Ages 6–18
Every Monday from August 25, 2025 to March 23, 2026
Mon
1/5
Karishim Swim Team
Karishim - Fall - Junior
January 5, 2026
12:00am - 11:59pm
Pool Deck, Leventhal-Sidman JCC
For Ages 6–18
Every Monday from August 25, 2025 to March 23, 2026
