The Gauntlet at Belvoir Castle
Belvoir (Grantham), United Kingdom · July · Castle Race Series (Independent)
Why people love it
- Fast, mostly flat 90 km (56 mi) bike on quiet roads with good surfaces for the UK
- Scenic castle-estate run with an event village that suits spectators
- Race run by Castle Race Series, known for friendly marshals
- Buoys are close together on the swim, which helps sighting
Watch out for
- Shallow, weedy pond with four laps and many turns; congestion at buoys in 2024
- Run is stony and very muddy in rain; trail shoes needed
- Bike feed station was thinly staffed and not all bottle hand-ups worked
- Only a few years of history; field in the half has been small
Race
How racers feel about it, how well it is run, and how it treats a first timer. Counts for 27% of the overall score.
- Racer satisfactionLoved3.9
About 20 half-distance reviews since 2024 average around 4.3; praise for venue and marshals, complaints about the swim and mud. · Medium confidence
- OrganizationWell run3.9
Course well marshalled and signposted according to several finishers; feed stations and the massage promise slipped in 2025. · Medium confidence
- First timer friendlyDoable3.0
Easy-to-navigate swim buoys and quiet roads help, but weed, mud and a hilly trail run raise the difficulty. · Medium confidence
Course traits, not part of the score
- PR potentialAverage3.2
Fast, flat bike but a shallow swim with many turns and a muddy hilly trail run. · Medium confidence
- Course easeVery tough2.4
Hilly muddy run and a hard swim with otherwise quick bike. · Medium confidence
Swim
Wetsuit odds, water temperature, calm, and the experience of the start. Counts for 15% of the overall score.
- Wetsuit legalUsually4.2
Wetsuits expected at this distance in summer; no temperature was published. · Low confidence
- Water temperatureAcceptable3.3
No temperature was published; hot summers warm the shallow pond. · Low confidence
- Calm waterGlassy4.5
Enclosed pond with no chop; shallow areas churn up. · Medium confidence
- Swim easeHard2.3
Four laps with many turns, weed, green buoys hard to see, and a congested start. · Medium confidence
- Swim experienceMeh2.3
Weedy, shallow estate pond with muddy exit complaints. · Medium confidence
Bike
Road surface, closures, scenery and wind. Counts for 19% of the overall score.
- Road surfaceGood4.0
Good surfaces 'for the UK' with one rough stretch after the feed station. · Medium confidence
- Road closuresPartly closed2.6
Quiet public roads with marshals at junctions. · Low confidence
- Bike sceneryBeautiful4.3
Called lovely and stunning by several reviewers. · Medium confidence
- WindSome wind3.3
No wind comments. · Low confidence
Course traits, not part of the score
- Bike speedFast4.1
Reviewers call it fast and flat with generally good roads. · Medium confidence
- Bike flatnessMostly flat3.7
Described as flat to undulating with a couple of climbs; no elevation total published. · Low confidence
- Bike simplicityMostly simple3.7
Mostly simple lanes with some signage gaps in the last village. · Low confidence
Run
Crowds, aid stations, conditions underfoot and scenery. Counts for 13% of the overall score.
- Crowd supportDecent3.3
Marshals are standout; small half field. · Medium confidence
- Aid stationsStandard3.1
Run aid adequate but bike feed and bottle hand-ups thinly staffed. · Medium confidence
- Run sceneryBeautiful4.4
Scenic estate trails. · Medium confidence
- Run conditionsHard2.2
Mud and steep, slippery sections in wet years made some finishers fear for safety. · Medium confidence
Course traits, not part of the score
- Run flatnessHilly2.4
Hilly, stony trail loops. · Medium confidence
Conditions
Air temperature, how predictable the weather is, setting, and spectating. Counts for 15% of the overall score.
- Air temperaturePleasant3.5
Hot in 2024, rainy in 2025; no range published. · Low confidence
- Weather reliabilityVariable3.0
Heat in some years, heavy rain in others. · Low confidence
- Venue beautyStunning4.7
Castle estate setting repeatedly praised. · Medium confidence
- Spectator friendlyEasy4.0
Event village and post-race facilities praised for spectators. · Medium confidence
Course traits, not part of the score
- Low altitudeSea level4.8
Belvoir Castle sits roughly 100 m (330 ft) above sea level. · Medium confidence
Stay and travel
Hotels, walkability, getting there, and the town around the race. Counts for 11% of the overall score.
- Hotel availabilityGood3.5
Rural Leicestershire; accommodation in Grantham. · Low confidence
- Hotel valueGood3.5
No comments on lodging cost. · Low confidence
- WalkabilityWalkable3.5
Camping and short walks within the estate. · Low confidence
- Travel easeOne connection3.0
About 60 km (37 mi) from East Midlands airport. · Low confidence
- LogisticsSimple4.2
Single estate venue. · Medium confidence
- Town and foodFine3.3
Event-village food; Grantham nearby. · Low confidence
Key facts
- Location
- Belvoir (Grantham), Leicestershire, England, United Kingdom
- Typical month
- July
- Latest or next date
- 18 July 2027
- Organiser
- Castle Race Series (Independent)
- First held
- 2024
- Distances
- 1.9 km (1.2 mi) swim, 90 km (56 mi) bike, 21.1 km (13.1 mi) run
- Swim venue
- Belvoir Castle estate pond (lake)
- Wetsuit
- Legal
- Swim start
- mass
- Swim laps
- 4
- Key climbs
- A couple of climbs
- Run shade
- estate woods
- Nearest airport
- East Midlands (EMA), 60 km (37 mi) away
- Where to stay
- Grantham, Melton Mowbray
- Booking
- Rural Leicestershire; stay in Grantham or Melton Mowbray.
What racers and reviewers say
- RaceCheck: Peter R.Raced 2026 · aggregator · Mixed
Enjoyed the day, but the four-lap pond swim was hard because of low depth, weed, many turns and green buoys that blended into the trees. Small half field alongside many other events raised safety issues; first trail run at the end of a middle distance.
- RaceCheck: Mike E.Raced 2026 · aggregator · Positive
Excellent, well-run event: well marshalled and signposted with adequate feed stations. Easy-to-navigate swim with buoys every 100-150 m (328–492 ft), a fast and flat bike with generally very good surface, a scenic and brutal run and great spectator facilities.
- RaceCheck: AnonymousRaced 2026 · aggregator · Positive
Stunning bike and run; some cheeky hills on the run but courses suit all abilities. The swim was not clear because of depth and heat waves. Supportive marshals; only the goody bag was slim.
- RaceCheck: Peter M.Raced 2025 · aggregator · Positive
Last to finish on the Sunday and still got nothing but encouragement, support and positivity from marshals, who cheered him in after spectators had gone home.
- RaceCheck: AnonymousRaced 2025 · aggregator · Positive
Has now done the Gauntlet at Belvoir, Hever and Cholmondeley, all well organised but tough. Trail shoes were essential for the lovely but horribly muddy run, not road shoes as discussed at briefing.
Show 7 more
- RaceCheck: AnonymousRaced 2025 · aggregator · Mixed
Second time here, hot one year and rainy the next. Swim OK but very weedy with many turns, bike good with uneven marshals, and a feed station with only two people that gave him one bottle; it also sat before rough road.
- RaceCheck: Steve C.Raced 2025 · aggregator · Mixed
Enjoyed the well-organised event. The lake was very weedy and the run was borderline unsafe on the first lap in heavy rain, with barely staying upright on downhills.
- RaceCheck: Jack G.Raced 2025 · aggregator · Mixed
Very good event with a lovely, muddy bike course in the rain and a slippery run. Was promised a free massage and queued 20 minutes before staff said they knew nothing about it.
- RaceCheck: AnonymousRaced 2025 · aggregator · Positive
Stunning location, very well organised, a shallow weedy lake, a flat bike course and a bog-like run in the rain. Great event but not for chasing a PB.
- RaceCheck: Kate W.Raced 2024 · aggregator · Positive
Amazing location with quiet bike roads and beautiful run scenery; asked for more aid stations on a hot day when she became very dehydrated.
- RaceCheck: AnonymousRaced 2024 · aggregator · Mixed
Learning points for a first event: a congested swim with short laps, a great bike but cyclists should be handed bottles, and a lovely run that is hilly and stony for tired legs.
- RaceCheck: Edward B.Raced 2024 · aggregator · Mixed
Swim pretty bad with reeds and shallow water, intricate route causing congestion at turns and an overly high exit ramp that hurt shins. The ride was great with no complaints.
Sources
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