Choose an outdoor session


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Great Adult Outdoor Activities

At HYM, we know that adventure and connection are essential at every age — especially for adults seeking more from their time outdoors. Our Adult Outdoor Activities blend invigorating physical challenges with restorative moments in nature, ideal for professionals, fitness enthusiasts, and outdoor lovers. Hike scenic trails, master kayaking, explore mountain biking, or unwind with sunrise yoga by a tranquil lake. Every experience fosters personal growth, camaraderie, and a deeper appreciation for the environment. With experienced guides ensuring safety and encouragement, our programs are designed to help you reconnect with nature, recharge mentally and physically, and forge lasting friendships along the way.

School group enjoying fun water based activities in Hertfordshire.

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How it works
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1. Choose Activity
We have lots of fun activities for all ages.
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2. Book Your Session
Book your session online or call us for large groups.
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3. Have Fun & Get Fit
Enjoy your activity, become healthier and make new friends.
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Google Reviews
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Why choose Herts Young Mariners Base
Experience
63+ YearsOf Outdoor Activities
At HYMB our instructors hold the relevant qualifications and are checked & tested regularly.
Trust
  • 5

Based on 80 reviews

We have over 100 Google reviews.
Our Promise
Better self-confidence and social interaction.
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Herts Young Mariners Base AALA Logo
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