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Challenge Awards IconChallenge Awards Top 10 Event 2019

Why book with us?

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AAT Events invites you to join us at this fantastic multisport event based at the state-of-the-art Surrey Sports Park! With a road run, road cycle, and pool swim, you won't want to miss this opportunity to get that PB you've been chasing!

Consider a donation to our Title Charity Partner: Harrison's Fund. There is the option to make a £10 donation with your booking. Harrison's Fun is named after a local boy, Harrison Smith, who suffers from Duchenne Muscular Dystrophy - a rare and currently fatal genetic condition which affects all the muscles in the body, causing them to waste away. Money raised will go into the hands of the world's best researchers, who are working to find a cure for all children with Duchenne. The charity is currently funding 16 research projects in the US and the UK.

Review summary

16 Reviews
  • Course
  • Organisation
  • Atmosphere


Chris H
"First Triathlon and really enjoyed it. Friendly inclusive environment for..."


Dita S
"Awesome venue for children, safe and well organised. It is great to get time..."


"Pool swim works well! :). Open bike course is frustrating with traffic and can..."
See all reviews

How to enter the Guildford Triathlon

  1. Sprint

    Triathlon: Swim 0.5km, Bike 22km, Run 5km
    Event passed
  2. Kids' Aquathlon (8-9 years old)

    Aquathlon: Swim 0.05km, Run 0.6km
    Event passed
  3. Kids' Aquathlon (10-11 years old)

    Aquathlon: Swim 0.2km, Run 2km
    Event passed
  4. Kids' Aquathlon (12-15 years old)

    Aquathlon: Swim 0.3km, Run 3km
    Event passed

Guildford Triathlon routes

Adult Sprint Triathlon: 500 meters swim course in the 50 meter Sports Park pool, then a 22km road bike, followed by a 5km off-road run.

Open to those 15 and older. Age as of 31st December 2019.

Children's Aquathlon Events:

The age groupings are as follows...

  • Dolphin 1 - 8/9 years. 50m swim / 600m run
  • Dolphin 2 - 10/11 years. 200m swim / 2km run
  • Dolphin 3 - 12/15 years. 300m swim / 3km run

Ages for Kids Aquathlon are calculated as of 13 July 2019.

Event Details

What’s Included
  • Chip Timing
  • First Aid
  • Free Parking
  • Indoor Toilets
  • Kids Races
  • Medal
  • On Site Catering
  • Showers
  • Web Results
Raceday Logistics

Register online and receive your confirmation email. Then on race day, pick up your race number and timing chip at the registration desk, open from 6 am. Nothing is sent out to you by post before race day. Read the Race Briefing sign.

Adults start from 7:15 am, slowest first. Predicted swim time of 12 minutes or more start 7:15 - 8:00. Predicted swim time of 11:45 minutes or less start 8:00-8:45 (all in predicted speed order). Aquathlon Kids start from 9:00, slowest first in their Dolphin groups.

Kit List

A triathlon suit or a swimming costume for the swim element with shorts and a t-shirt in transition to put on for the bike and run.

Lockers are available within the Sports Park, they take a £1 coin. Showers, toilets and changing facilities are also available.


If you would like to volunteer for this event then please follow the link below -


Staff will be on hand at the venue and out on the course.

All athletes will be chip timed.

Toilets are available in the Sports Park building, as are showers, lockers and changing rooms.

Will be available at the finish line.

Snacks for finishers.

To grab a massage once you're finished!

Guildford Triathlon weather forecast

Mostly cloudy throughout the day.

Predicted highs
Predicted lows
IconLight breeze possible, up to 9mph

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AAT Events

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AAT Events
Founded in 2004, we organize fun events for fun people. We pride ourselves on customer loyalty and always aim to organise a friendly racing environment in scenic locations.

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Guildford Triathlon reviews (16)

4.5 out of 5 stars

  • Course
  • Organisation
  • Atmosphere
  • Did the Kids' Aquathlon (10-11 years old) in 2019

    Awesome venue for children, safe and well organised. It is great to get time and position straight after finishing too.
  • N


    Did the Sprint in 2019

    Pool swim works well! :). Open bike course is frustrating with traffic and can be quite dangerous given the residential areas. Also the run course could do without the trail run (Dodgy tree roots) but overall very enjoyable so thankyou!!
  • C

    Chris H

    Did the Sprint in 2019

    First Triathlon and really enjoyed it. Friendly inclusive environment for beginners to pro's. Swim was well organised, albiet queuing to start for 50 mins. Transition was safe and quite fun, the ride was well routed to avoid traffic lights too. And the run was grim, the mild hill felt like a 20% incline.

    Got the bug now, will do it again 🏊‍♂️🏃🏻‍♂️🚴🏽‍♂️👌🏼

  • S

    Steve w

    Did the Sprint in 2019

    A great race which I would do again & recommend to others.
    Bike & run course well signposted ( run nice, varied terrain/ scenery). Maybe a more traditional approach to swim start times ( ie all the 8.20 pace swimmers inthe pool at a set time, all the 7 min a set time 4 in a specific lane) rather than the rolling start that delayed starts & had 8 mins in with 10. Not a criticism just a suggestion. 👍
  • C

    Claire E

    Did the Sprint in 2019

    Really friendly race and a great atmosphere! Swim start was a bit chaotic, I started half an hour later than planned - this could be improved for next year by starting faster swimmers first maybe? Swim itself was good - no congestion and I enjoyed the snake style swim progressing up the lanes. Cycle course was great and well marshalled. Run course was really hard! Lots of hills and uneven ground so my run was not as fast as I'd have liked. I was also surprised there wasn't a water station given the heat. Overall a great race, just a few tiny things that could have been improved
  • B

    B M

    Did the Sprint in 2019

    Event went well for me. Organisation of the swim was poor with a long wait time and no monitoring of actual start times. Bike route was good and well signed and marshalled. Run also good, although a little narrow and overgrown in places, as well as being hillier than advertised.
  • S

    Stuart s

    Did the Sprint in 2019

    Overall very well organised. Good emails before the day which were v clear. Excellent online video of how the transition would work.
    Lovely cycle ride with a few undulations, and only one set of traffic lights. Run was good with a cheeky couple of hills and great views of the cathedral.
    The swim queue was quite long and would have been better to enforce only certain times in the queue to save on the wait.

  • J

    Jen K

    Did the Sprint in 2019

    Very well organised, great signage but I didn’t receive a medal as they didn’t have enough for everyone, which was a bit disappointing!
  • Did the Sprint in 2019

    Really well organised with clear instructions. Great support through out. Nice course but not the hilly bit. First pool swim with a good stagger between each participant and therefore no one swimming over the top of you. Will do again next year.
  • Did the Sprint in 2019

    Great event for beginners (like me). Lovely cycle along leafy country lanes and a challenging cross country running route. The only slight niggle was the 35 min wait to get into the pool. Still, I had a brilliant time and definitely have the bug now. Thanks 🏊‍♂️🚴‍♂️🏃‍♂️👊
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