ATW Big East & Maldon Triathlon
Maldon, United Kingdom · July · Other (ATW Events)
Why people love it
- Tidal river swim beside historic Thames sailing barges
- Flat, mostly quiet Dengie roads make for a fast 20 km (12.4 mi) sprint bike
- Marshals and pre-race communication score 4.8 to 4.9 out of 5 on Racecheck
- Transition and finish share Promenade Park, easy for spectators
Watch out for
- The swim is tidal, so start times move with high tide
- Roads are open to traffic; village vehicles slowed some riders
- Check turn markers: one rider missed a turn near 19 km (11.8 mi)
- The standard run has uneven sections and a steep finish stretch
- Only 8 written reviews, so the scores carry some uncertainty
Race
How racers feel about it, how well it is run, and how it treats a first timer. Counts for 30% of the overall score.
Toughness: Tough
- Racer satisfactionLoved4.1
Racecheck shows 4.5 from 24 ratings and 8 written reviews. A modest sample, so scored in line with other well-liked UK races. · Medium confidence
- OrganizationWell run4.0
Marshals and communication are praised, but a 2025 athlete found the swim turn chaotic and one rider missed a bike turn. · Medium confidence
- First timer friendlyFriendly3.7
A 1.5 km (0.9 mi) tidal swim and 40 km (25 mi) open-road bike are a step up. One nervous first-timer loved it. · Low confidence
Course traits, not part of the score
- PR potentialFast3.6
Same flat roads over 40 km (25 mi). Wind exposure and a rough final run section cost time. · Low confidence
Swim
Wetsuit odds, water temperature, calm, and the experience of the start. Counts for 16% of the overall score.
- Wetsuit legalUsually4.0
July start under British Triathlon rules, which follow World Triathlon: no wetsuits above 24.6 °C (76.3 °F). Water temperature is not published. · Low confidence
- Water temperatureComfortable3.5
No published water temperature. A July tidal river is likely 17 to 21 °C (63 to 70 °F). · Low confidence
- Calm waterSome chop3.2
Tidal flow and some wind chop in the estuary. No swell. · Low confidence
- Swim easeModerate2.9
A 2025 reviewer found the turn buoy instructions unclear and busy. · Low confidence
- Swim experienceGreat3.8
Tidal river swim past Thames sailing barges. Racecheck reviewers score water quality 4.1 out of 5. · Medium confidence
- Swim supportGood3.5
Wave starts timed to the tide. Few reviewers describe kayak or lifeguard cover. · Low confidence
Bike
Road surface, closures, scenery and wind. Counts for 18% of the overall score.
- Road surfaceMixed3.3
No surface complaints in reviews. Rural peninsula lanes can be patchy. · Low confidence
- Road closuresMostly open2.3
Roads stay open to traffic. Reviewers report vehicles in villages and on the sprint bike. · Medium confidence
- Bike sceneryPleasant3.4
Quiet farmland and villages. Few reviewers comment on the views. · Low confidence
- WindSome wind2.8
Exposed peninsula roads. A 2013 report also notes the open, windy bike course. · Medium confidence
Course traits, not part of the score
- Bike speedFast3.8
Flat and fast over 40 km (25 mi), but exposed to wind and village traffic. · Medium confidence
- Bike flatnessMostly flat4.2
Described as flat. Gain is not published, so under 150 m (500 ft) over 40 km (25 mi) is assumed. · Low confidence
- Bike simplicityMostly simple3.5
Village turns and one missed turn marker near 19 km (11.8 mi). Otherwise straightforward. · Low confidence
Run
Crowds, aid stations, conditions underfoot and scenery. Counts for 13% of the overall score.
- Crowd supportStrong3.7
Lively park finish and good spectator spots. Few reports of crowds out on the course. · Medium confidence
- Aid stationsGood4.0
Racecheck rates aid stations 4.2 out of 5. One reviewer calls the aid well stocked. · Medium confidence
- Run sceneryBeautiful3.8
Promenade, sea wall and Promenade Park beside the river. · Low confidence
- Run conditionsModerate3.3
Mixed surfaces. 56% of reviewers call the run undulating. · Low confidence
Course traits, not part of the score
- Run flatnessRolling3.4
Listed as promenade and sea wall, but reviewers describe uneven, steep final sections. Gain is not published. · Low confidence
Conditions
Air temperature, how predictable the weather is, setting, and spectating. Counts for 13% of the overall score.
- Air temperaturePleasant4.0
Typical July highs of 20 to 23 °C (68 to 73 °F). · Low confidence
- Weather reliabilityVariable3.2
British summer weather is variable and the coast is exposed. · Low confidence
- Venue beautyLovely3.8
Waterfront park with historic sailing barges. · Medium confidence
- Spectator friendlyEasy4.1
Transition and finish share one park. A reviewer praises the location for supporters. · Medium confidence
Course traits, not part of the score
- Low altitudeSea level5.0
About 5 m (16 ft) above sea level. · High confidence
Stay and travel
Hotels, walkability, getting there, and the town around the race. Counts for 10% of the overall score.
- Hotel availabilityGood3.5
Small Essex town with hotels and B&Bs. Not a destination weekend. · Low confidence
- Hotel valueGood3.5
No price data. Typical for provincial England. · Low confidence
- WalkabilityWalkable4.0
Park once at Promenade Park. Swim start, transition and finish are close together. · Medium confidence
- Travel easeOne connection3.2
About 45 km (28 mi) from Stansted. Most athletes drive. · Low confidence
- LogisticsSimple4.1
Racecheck rates event logistics 4.8 out of 5. One park holds transition and finish. · Medium confidence
- Town and foodGood3.8
Maldon has a high street, quayside pubs and cafes. · Low confidence
Key facts
- Location
- Maldon, Essex, United Kingdom
- Typical month
- July
- Latest or next date
- 4 July 2027
- Organiser
- Other (ATW Events)
- Distances
- 1.5 km (0.9 mi) swim, 40 km (24.9 mi) bike, 10 km (6.2 mi) run
- Cutoffs
- Swim 1:10
- Swim venue
- Tidal River Blackwater, starting by the Byrhtnoth statue near Promenade Park (river)
- Wetsuit
- Likely legal in July; water temperature not published
- Swim start
- wave (timed around high tide)
- Swim laps
- 1
- Air temperature
- 13–23 °C (55–73 °F)
- Humidity
- moderate
- Altitude
- 5 m (16 ft)
- Nearest airport
- London Stansted or London Southend, 45 km (28 mi) away
- Where to stay
- Maldon town centre
- Booking
- Day-trip race for most; Maldon has hotels and B&Bs.
What racers and reviewers say
- RacecheckRaced 2026 · aggregator · Positive
Racecheck shows 24 ratings at 4.5 out of 5 (4.8 for 2026), with 8 written sprint or standard reviews. Athletes praise the marshals, communication and well signed routes, and first-timers feel looked after. Complaints are a confusing swim turn, village traffic, one missed bike turn marker and uneven, steep run sections.
- 220 TriathlonRaced 2013 · article · Positive
Report on the 2013 edition with about 250 athletes from novices to experienced racers. The swim ran alongside Thames sailing barges with spectators along the length, the bike used exposed Dengie roads, and the park finish had lively crowds. Dated, but it shows the venue character has been stable.
Raced ATW Big East & Maldon Triathlon? Your notes on the course, conditions and logistics help the next athlete decide.
Sources
Pages we used for facts and ratings. See how we rate.
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