Belvoir Castle Triathlon & Multisport Festival | 2026

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Sat, 18th Jul 26
Grantham

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Race Information

Multi-discipline festival weekend at Belvoir Castle with 23 event options.

1000 Participants
Intermediate
Entries open in 317 days
Organized by
Castle Race Series
Location

About Belvoir Castle Triathlon & Multisport Festival | 2026

18th Jul 26 - Grantham
A weekend multisport festival at Belvoir Castle Estate, featuring triathlon, duathlon, aquabike, aquathlon, swim, run & relay events across 23 distances—from starter to full Iron—plus festival village, on-site camping, and live entertainment.
Triathlon | 9–10 yrs
Triathlon - 5.7 km
0.2km Swim | 4.2km Bike | 1.3km Run
Sat, 18th Jul 26 • 14:30
£35
Coming Soon!
£35
Coming Soon!
Aquathlon Sprint
Swimrun - 5.75 km
0.75km Swim | 5km Run
Sat, 18th Jul 26 • 10:15
£50
Coming Soon!
£50
Coming Soon!
Triathlon | 11–12 yrs
Triathlon - 5.9 km
0.3km Swim | 4km Bike | 1.6km Run
Sat, 18th Jul 26 • 14:00
£40
Coming Soon!
£40
Coming Soon!
Starter Triathlon
Triathlon - 14.7 km
0.2km Swim | 12km Bike | 2.5km Run
Sat, 18th Jul 26 • 10:45
£80
Coming Soon!
£80
Coming Soon!
Aquabike Sprint
Aquabike - 20.75 km
0.75km Swim | 20km Bike
Sat, 18th Jul 26 • 10:15
£65
Coming Soon!
£65
Coming Soon!
Super Sprint Triathlon
Triathlon - 24.4 km
0.4km Swim | 20km Bike | 4km Run
Sat, 18th Jul 26 • 10:30
£95
Coming Soon!
£95
Coming Soon!
Sprint Triathlon
Triathlon - 25.75 km
0.75km Swim | 20km Bike | 5km Run
Sat, 18th Jul 26 • 09:30
£100
Coming Soon!
£100
Coming Soon!
Duathlon Sprint
Duathlon - 27.5 km
5km Run | 20km Bike | 2.5km Run
Sat, 18th Jul 26 • 10:00
£75
Coming Soon!
£75
Coming Soon!
Sprint Plus Triathlon
Triathlon - 48.8 km
0.8km Swim | 40km Bike | 8 km Run
Sat, 18th Jul 26 • 09:00
£115
Coming Soon!
£115
Coming Soon!
Triathlon | 13–14 yrs
Triathlon - 10.8 km
0.4 km Swim | 8 km Bike | 2.4 km Run
Sun, 19th Jul 26 • 14:30
£45
Coming Soon!
£45
Coming Soon!
Triathlon | 15–16 yrs
Triathlon - 10.9 km
0.5km Swim | 8km Bike | 2.4 km Run
Sun, 19th Jul 26 • 14:00
£50
Coming Soon!
£50
Coming Soon!
Aquathlon Standard
Swimrun - 11.5 km
1.5km Swim | 10km Run
Sun, 19th Jul 26 • 10:30
£65
Coming Soon!
£65
Coming Soon!
Aquabike Standard
Aquabike - 46.5 km
1.5km Swim | 45km Bike
Sun, 19th Jul 26 • 10:45
£70
Coming Soon!
£70
Coming Soon!
Olympic Triathlon
Triathlon - 57 km
1.5km Swim | 45km Bike | 10.5km Run
Sun, 19th Jul 26 • 09:45
£125
Coming Soon!
£125
Coming Soon!
Duathlon Standard
Duathlon - 60.5 km
10.5km Run | 45km Bike | 5km Run
Sun, 19th Jul 26 • 09:30
£80
Coming Soon!
£80
Coming Soon!
Duathlon Middle Distance
Duathlon - 111 km
10.5km Run | 90km Bike | 10.5km Run
Sun, 19th Jul 26 • 09:00
£90
Coming Soon!
£90
Coming Soon!
Gauntlet Triathlon
Triathlon - 112.9 km
1.9km Swim | 90km Bike | 21km Run
Sun, 19th Jul 26 • 08:00
£245
Coming Soon!
£245
Coming Soon!
£35 - £245
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Amenities
Toilets
Food and Drink
Parking
Medical
Bag Storage
Hydration Stations

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£35 - £245
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