Trident Grantham Triathlon (formerly Grantham Spring Triathlon)
Grantham, United Kingdom · April · Independent (Trident Sports Events; earlier SBR Events)
Latest edition: Relaunched under Trident Sports Events on 26 Apr 2026 at Grantham Meres Leisure Centre. All reviews on Racecheck are for the earlier SBR-run Grantham Spring Triathlon, so course details may have changed.
Course: 0.4 km (0.2 mi) swim, 18 km (11.2 mi) bike, 5 km (3.1 mi) run. 400 m (0.25 mi) / 18 km (11.2 mi) / 5 km (3.1 mi) per Racecheck for earlier editions. One 2026 aggregator listing shows a 24 km (14.9 mi) bike; not confirmed.
Why people love it
- Pool swim of 400 m (0.25 mi), so no open-water nerves for a first race
- Marshals praised by nearly every reviewer; 4.66 out of 5 on 48 Racecheck reviews
- Bike and run loops pass the venue, so family can watch several times
- Flat, fast 5 km (3.1 mi) run
Watch out for
- All reviews are of the event under its previous organiser, before the 2026 relaunch. Details may have changed.
- Bike has potholes, a sharp bend and a narrow bridge on about 18 km (11 mi); roads are open
- Car park was shared with other users in 2022, with traffic at bike in and out
- April mornings can be cold, roughly 6 to 14 °C (43 to 57 °F)
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: Moderate
- Racer satisfactionLoved4.2
Racecheck averages 4.66 out of 5 on 48 reviews, but all describe the event under its previous organiser. · Low confidence
- OrganizationWell run3.7
Marshals and logistics scored above 4.8 under the old organiser; the 2026 relaunch has no athlete reports yet. · Low confidence
- First timer friendlyIdeal first race4.6
Called ideal for beginners by reviewers who tagged it; short pool swim. · High confidence
Course traits, not part of the score
- PR potentialAverage3.3
Undulating 18 km (11 mi) bike · Low confidence
Swim
Wetsuit odds, water temperature, calm, and the experience of the start. Counts for 16% of the overall score.
- Wetsuit legalRarelyn/a
Pool swim, not applicable · High confidence
- Water temperatureComfortable4.0
Heated leisure pool · Low confidence
- Calm waterRoughn/a
Pool swim, not applicable · High confidence
- Swim easeEasy4.3
Pool · Medium confidence
- Swim experienceFine3.4
Standard leisure-centre pool; little written about the swim itself. · Low confidence
- Swim supportAbundant4.5
Pool swim with lifeguards and a friendly start; no open-water risk for nervous beginners. · Medium confidence
Bike
Road surface, closures, scenery and wind. Counts for 18% of the overall score.
- Road surfaceMixed2.8
Potholes marked by marshals in 2022 · Low confidence
- Road closuresPartly closed2.7
Open roads with marshals; a delivery lorry and car-park traffic entered the route in 2022. · Medium confidence
- Bike sceneryPleasant3.0
Rural roads; reviewers noted nothing special. · Low confidence
- WindSome wind3.3
Open Lincolnshire farmland; no wind complaints, but little written about it. · Low confidence
Course traits, not part of the score
- Bike speedAverage3.2
Bends, roundabouts and potholes slow an 18 km (11 mi) course. · Low confidence
- Bike flatnessRolling3.3
Undulating, elevation unpublished · Low confidence
- Bike simplicitySome technical parts2.7
Sharp left bend, narrow bridge, roundabouts · Medium confidence
Run
Crowds, aid stations, conditions underfoot and scenery. Counts for 13% of the overall score.
- Crowd supportDecent3.4
Loops pass the venue and marshals were cheerful; little is written about spectators. · Low confidence
- Aid stationsGood4.1
Racecheck rated aid stations 4.76 on 38 ratings, but under the previous organiser. · Low confidence
- Run sceneryPleasant3.0
Leisure-centre and town surroundings · Low confidence
- Run conditionsEasy4.0
Flat 5 km (3.1 mi) · Low confidence
Course traits, not part of the score
- Run flatnessMostly flat4.2
Flat · Medium confidence
Conditions
Air temperature, how predictable the weather is, setting, and spectating. Counts for 13% of the overall score.
- Air temperatureWarm or cool3.2
Late April, cool; one reviewer said it was cold · Low confidence
- Weather reliabilityVariable3.0
Late April in England; one reviewer found it cold. · Low confidence
- Venue beautyPleasant2.8
Leisure centre and car park setting · Low confidence
- Spectator friendlyEasy4.0
One reviewer noted that the bike and run loops let supporters see racers repeatedly. · Low confidence
Course traits, not part of the score
- Low altitudeSea level5.0
About 75 m (250 ft) · High confidence
Stay and travel
Hotels, walkability, getting there, and the town around the race. Counts for 10% of the overall score.
- Hotel availabilityGood4.0
Day-trip race; town has hotels · Low confidence
- Hotel valueGood3.5
Day-trip race; no evidence on prices. · Low confidence
- WalkabilitySome driving3.4
Shared car park at the venue; one reviewer noted traffic there at bike in and out. · Low confidence
- Travel easeEasy3.8
On the East Coast Main Line; road via A1 · Low confidence
- LogisticsSimple4.0
One venue and a transition change that worked in 2022; the relaunch layout is unknown. · Low confidence
- Town and foodFine3.3
Small market town; day-trip race. · Low confidence
Key facts
- Location
- Grantham, Lincolnshire, United Kingdom
- Typical month
- April
- Latest or next date
- 26 April 2026
- Organiser
- Independent (Trident Sports Events; earlier SBR Events)
- Distances (non-standard)
- 0.4 km (0.2 mi) swim, 18 km (11.2 mi) bike, 5 km (3.1 mi) run
- Swim venue
- Grantham Meres Leisure Centre pool (pool)
- Wetsuit
- Not applicable (pool)
- Swim start
- pool time-trial lanes (earlier editions)
- Bike laps
- 3
- Run laps
- 2
- Air temperature
- 6–14 °C (43–57 °F)
- Altitude
- 75 m (245 ft)
- Nearest airport
- East Midlands Airport
- Where to stay
- Grantham town centre
- Booking
- Day-trip race. Grantham has a station on the East Coast Main Line.
What racers and reviewers say
- Racecheck Grantham Spring TriathlonRaced 2022 · aggregator · Positive
48 athletes average 4.66 out of 5, with logistics, marshals and safety all above 4.8. The ten reviews shown are all from 2022 and nine are sprint. Reviewers call it a friendly first race and praise the marshals. The bike draws the complaints: potholes, a tight bend, a narrow bridge, and car-park traffic. Count shown is pro rata for sprint only.
“Marshals made the event”
- 220 Triathlon race reportarticle · Positive
An earlier-edition report describes a 16-length pool swim and a two-lap bike with sharp bends, roundabouts and some hills. The writer found the event well organised with excellent marshals and a good-humoured atmosphere.
Raced Trident Grantham Triathlon (formerly Grantham Spring 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.
Training for Trident Grantham Triathlon (formerly Grantham Spring Triathlon)? Moku Coach builds your plan around race day.