Hertfordshire Triathlon

23rd May 2021.

Starting from 07:00am

This event is organised by Active Training World

Hertfordshire Triathlon


This event will feature sprint and standard individual triathlons, both with relay and aquabike options. The sprint distance triathlon includes the Herts Club Championships, but is open to everyone. The race starts with an open water lake swim before heading out onto a rural, undulating bike course in the Hertfordshire countryside. The run is completely traffic free, on a compact grass surface.

The triathlon will begin at 07:00am. All events will take the style of a time trial with athletes started at 20 second intervals with the fastest athletes starting the swim first. This is based on the estimated finish time given at the checkout when entering. This format may change depending on the Covid restrictions in place at the time.

Many people are understandably nervous regarding entering events again and we want to assure you that we take every measure we can to organise a safe, socially distanced event. To see this in action watch our video Covid-19 Safety at ActiveTrainingWorld Running and Triathlon Events

We want you to book with confidence so, if this event can no longer go ahead, and an alternative date isn’t found, you will be offered a virtual run or a refund of your entry fee. (Booking fees are non-refundable)

Sunday 23rd May 2021.
Start Time: From 07.00am 

LOCATION: Stanborough Lakes, Welwyn Garden City, Hertfordshire, AL8 6DQ

Online entries: Pay by major credit/debit cards



Race numbers will be collected at the the event venue on the morning of the race.

Registration open from: 06:00am 
The day license for Non-BTF members is included in the entry price.

There will be an online race briefing made available before the event, it is mandatory to have watched this as there will be no pre-race briefing on the day.

Please arrive in sufficient time to collect your race number.


Book your place

  • If this is your first registration on our new booking platform but had an ATW account previously, your old ATW log in details are now invalid and a new account will be created for you when you book your first event without logging in.
  • If you are booking more than 1 place, please ensure that you complete the individual details for each attendee accurately answering all the questions on their behalf.
  • Relay entries should be completed with lead entrant’s details only. Additional team members’ details will be taken at Registration on the day
  • The BTF Day License for the event is included in the price of a Non BTF Entry


Details Price Qty
Hertfordshire Triathlon Standard Entry Non BTF Member £76.00 (GBP)*  
Hertfordshire Triathlon Standard Entry BTF Member £70.00 (GBP)*  
Hertfordshire Triathlon Standard Relay Entry Non BTF Member £76.00 (GBP)*  / bundle 
Hertfordshire Triathlon Standard Relay Entry BTF Member £70.00 (GBP)*  / bundle 
Hertfordshire Triathlon Standard Aquabike Entry BTF Member £60.00 (GBP)*  / bundle 
Hertfordshire Triathlon Standard Aquabike Entry Non BTF Member £66.00 (GBP)*  / bundle 
Hertfordshire Triathlon Sprint Entry Non BTF Member £66.00 (GBP)*  
Hertfordshire Triathlon Sprint Entry BTF Member £60.00 (GBP)*  
Hertfordshire Triathlon Sprint Relay Entry Non BTF Member £66.00 (GBP)*  / bundle 
Hertfordshire Triathlon Sprint Relay Entry BTF Member £60.00 (GBP)*  / bundle 
Hertfordshire Triathlon Sprint Aquabike Entry Non BTF Member £56.00 (GBP)*  / bundle 
Hertfordshire Triathlon Sprint Aquabike Entry BTF Member £50.00 (GBP)*  / bundle 

Price does not include booking fee



We actively welcome support and involvement from local communities, businesses and individuals. If you would like to find out more about marshalling, sponsorship or group bookings please contact us at the address below.

Spectators are strongly discouraged from attending.

If you would like more info on this event please use the email address below:



Custom designed medal for all finishers! 

Herts Club Championship Trophy for the winning club team

There will be no prizegiving on the day but you will be able to collect your medals.

There will be full results on the chip timing website both overall and by category.

Course Information

The race starts and finishes in the same location at Stanborough Lakes, Welwyn Garden City

The course is fast, flat and has great PB potential.

Swim: Lake swim. The route is a 750m CLOCKWISE loop around the circumference of the lake. The sprint distance athletes will complete one loop, wheras the standard distance athletes will complete two full loops.

Bike: On an undulating road surface, the route heads out to a roundabout where the main loop starts. The sprint distance athletes will complete one loop and the standard distance athletes will complete two loops. 

Run: The course is on hard, compacted ground with short cut grass, so despite being an off-road run, is incredibly fun to race on and can make for some fast times! There is one short climb towards the end of each lap. 


Training Plans

Need help with your running? Whether this is your first triathlon and you want to know how to prepare, or you are looking to smash your personal best – following a training plan will increase your chances of achieving your goals.

Visit the ATW Shop to submit your requirements for a fully customised run training plan.


Other Race Information

It is important that you are fit to run and have not experienced any Covid-19 symptoms in the 14 days leading up to the event.

Race Numbers
Please wear your number pinned to the front and back of your vest or alternatively, using a race belt, rotate the race number to the back fr the bike leg and the front for the run leg.


A pay and display car park is available at Stanborough Lakes.

Changing Facilities
We will not be providing a changing area, therefore please come changed and ready to race.

Baggage Drop
There will be an informal baggage drop area for you to leave any belongings within the transition area.

There will be toilets available.

Dogs & Buggies
No dogs and buggies allowed

If you are unable to attend due to illness, injury, family bereavement, jury service you will only be eligible for a refund on production of official evidence: Positive Covid-19 test result, Doctor’s note, Death Certificate etc.

Event Cancellation
If the event should have to be cancelled due to reasons beyond ATW’s control (for example, severe weather, local or national lockdown) entrants will be given a range of options to choose from, which will include a refund of their entry fee (less the booking fee).


By entering this event you agree to the below terms and conditions:

Your details will kept in accordance with the Active Training World Privacy Policy

Your name, date of birth and email details will be onto the chip timing company. Personal details will be deleted 1 week after the event.

Where specified on the booking form any medical information will be passed onto the medical team present at the event. 


1) I am over 15 as at 31/12/2021 (Sprint Distance) and over 17 as at 31/12/2021 (Standard Distance). 

2)  I declare that I am medically fit to compete & understand that I do so entirely at my own risk.

3) I understand that I enter the race at my own risk and that no person(s) or organisation(s) will be held responsible for any accident, injury or loss to myself, prior to, during or after the event.

4) I understand the organisers reserve the right to alter the arrangements and conditions, should circumstances require.

5)  By entering this event, I accept BTF rules.