




Open Water Swimming reopens on Wednesday 7 May!
NEW for 2025! Buy 10 Open Water Swimming Sessions & get 1 FREE!
Dive into a refreshing open water swim at Upton Warren. Our stream-fed lake offers a natural swimming experience with regularly tested water quality, and all sessions are supervised by lifeguards both on and off the water.
Swimmers are required to follow a 'clockwise' direction around the lake. Changing rooms and showers are available for your convenience.
2025 Season Schedule:
- When: Wednesday & Friday evenings, 6:00pm – 7:30pm
- Season Duration: Wednesday 7 May – Friday 12 September
- Note: Sessions only run if water temperature is at least 11.5°C
Important Swim Requirements:
- All swimmers must wear a brightly coloured swimming hat.
- Tow floats are strongly recommended for all swimmers.
- A well-fitting wetsuit is highly recommended, providing both warmth and buoyancy.
- If the water temperature is under 16°C, wearing a wetsuit is compulsory. However, if the water temperature is above 16°C, you may still find it colder than expected, especially if you're new to open water swimming.
Please see our Facebook page for updates on the water temperature.
We’re excited to offer an Adults' Introduction to Open Water Swimming Course for those new to open water swimming or anyone looking to improve their skills.
Useful information
Refunds
- Up to seven days prior to your activity date you can cancel an existing booking and receive a full refund. You can also amend your booking free of charge.
- Up to five days prior to your activity date you can amend your booking free of charge.
- Within five days of the booking date, if Aztec Adventure Ltd are operational, you will not be entitled to move your booking, or receive any refunds for cancellations.
- To make a change to your booking, please email: hello@aztecadventure.co.uk and include your booking reference number with your request.
Group Adventures
We can offer a whole variety of packages for different occasions. Please see the Group Adventures section of our website for more information. If you would like to know more fill in a contact form with your requirements and we’ll get in touch with more information, availability and prices.
Pets and assistance dogs
Currently, we do not allow dogs at:
- Aztec Adventure Upton Warren
Aztec Adventure Upton Warren is very fortunate that its home is on a Site of Special Scientific Interest (SSSI). We have a duty to protect our flora and fauna; a condition of this is that Natural England do not allow dogs on site.
Aztec Adventure The Lost Valley welcomes well behaved dogs and their owners! The Valley is dog friendly with walks, dog events and benefits from having some dog-friendly stores.
Dogs are allowed at Aztec Adventure Lower Moor but must be on a lead at all times. Please note that dogs are not allowed in the lake.
Please note no other animals are permitted at Aztec Adventure The Lost Valley and Aztec Adventure Lower Moor.
All of our sites do allow assistance dogs.
Wildlife and fish
There are ducks and geese that live on and around the lakes at Upton Warren and Lower Moor. There are also fish in the lakes, both large and small.
What happens with bad weather?
Rain: Our sessions will still go ahead if it’s raining—after all, you’re going to get wet anyway!
Lightening: If we observe lightning and hear thunder in the vicinity, we must pause the session for safety reasons. Ensure all participants are on the shore. We unfortunately will not be able to restart the session for at least 30 minutes. If conditions improve and we can safely resume without affecting other sessions, we will do so. If not, you have the following options:
- Rebook onto a session later in the day, subject to availability.
- Rebook for a different day.
- Request a refund.
Your safety is our priority, and we appreciate your understanding.
Blue Light Card Discounts
Please note that we do not offer Blue Light Card Discounts. Our 2025 pricing includes seasonal rates, combo bookings (20% discount on the second activity when you purchase adventure golf or the high ropes aerial adventure course, or aqua park and boat hire), and group discounts—available exclusively for pre-booked online bookings—so you can save more when you bring friends and family along. On-the-day pricing may vary, and all activities and courses are subject to availability. For more information, visit: Book Ahead for Your Adventures in 2025.
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TESTIMONIALS
We love what we do at Aztec Adventure but don’t just take our word for it! See all the lovely things our customers have to say about us.
Ready to start your Adventure?
Then jump right in! You can book our Adventure Activities and Adventure Courses online via our booking system. Click on the 'Book Now' button below.