A Riverside Leisure Centre outdoor exercise class in action

We're hosting a number of group exercise classes in the open outdoors just outside our centre, where you can get fit and have fun in the fresh air and maybe the summer sun - take in those energising rays.


Arena is an intense, 30 minute class run by our Gym team. It will push you to the limit and provide you with fast and long-lasting results.

A mixture of strength, cardio and core moves will help you achieve your fitness goals while giving you a fun workout.

This is a 30-minute class and is a medium intensity session.

Body pump

In this Les Mills group exercise class you will use barbell weights to squat, lift and pump your way to fitness. The instructor will help you select the right weights for you, and if you want a challenge, you can increase the weight you lift.  

With a great soundtrack, you’ll want to keep coming back for more.

This session is run as either a 45-minute or 60-minute session. This class is a medium intensity workout.

Can't make the class? We also run this session virtually!


Our Core group exercise class is 30 minutes of exercises that will strengthen the muscles around your abs, back and bum.   

Not only will you tighten that six pack, but you will also help to ease back pain, and improve posture.  

We will provide all equipment used in the class for you, but if you would like to bring your own mat feel free.

This is a 30-minute class and is a medium intensity session.

HIIT and core

HIIT and core classes offer a full body workout like no other. You will do a quick warm-up which will get you ready for the high intensity interval training that follows. You will work hard for a short burst, then recover, before going again.  

This class combines resistance training with plyometric (jump) training, which will improve your power and strength.

Our instructors will work with you, will push you and motivate you to achieve your best results.  

This is a 45 minute class and is a high intensity session.

Standard prices

  • 30 minutes: £7.30
  • 45 minutes: £8.30
  • 60 minutes: £9.30


  • 30 minutes: £6.80
  • 45 minutes: £7.60
  • 60 minutes: £8.50

Save money by upgrading to an ourChelmsford Plus or monthly Premium membership.

Standard prices

  • 30 minutes: £6.30
  • 45 minutes: £7.30
  • 60 minutes: £8.30


  • 30 minutes: £5.80
  • 45 minutes: £6.60
  • 60 minutes: £7.50

Save money by upgrading to a monthly Premium membership

Our exercise classes are very popular, we advise booking in advance. 

You can:  

You can book onto classes: 

  • ten days in advance if you have a monthly membership  
  • seven days in advance if you have an ourChelmsford Plus card     
  • two days in advance if you have an ourChelmsford Lite card
  • You will need to book a session in advance to guarantee your space.
  • If you do not check-in, we will charge you the full amount for the session.
  • Please make sure that you have registered your email address with us in order to book online.
  • If you can't attend a class that you have booked onto, you must cancel at least two hours before it starts.
  • You can cancel online or via the app, by calling 01245 615050 or in person. 
  • We will charge you the full amount for the class if you do not cancel in time, or if you do not attend.
  • You will need to collect a ticket from reception when you arrive for your class.  
  • Monthly members can swipe through the barrier and register their attendance. 
  • You will not be allowed entrance to any class if it has already started.  
  • To allow time for changeovers, classes will finish five minutes before the advertised time.  
  • If you want to use a locker on poolside, you will need a £1 coin to release the key. You will get the £1 back when you return the key.   
  • There is a male group changing area and a female group changing area located on poolside. 
  • Accessible changing facilities are located on poolside.
  • The pools complex, including the changing area is a shoe-free zone, this includes the removal of flip flops.

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