As Keen As Mustard Grafham Water Swimrun Event
The event takes place on 28 June 2026 at Grafham Water, Marlow Car Park, Huntingdon PE28 0BH. It is a swimrun around the reservoir featuring open-water swims and trail runs through woodland and along reservoir tracks.
Races
- Intro 5k Solo Swimrun
- Sprint 10k Solo Swimrun
- Half 21k Solo Swimrun
- Half 21k Team Swimrun
Courses are undulating with multiple swim entry and exit points, swims across natural bays, and running around reed-fringed banks. Shorter courses loop back along the north shore. The 21k route completes a full lap of the reservoir and passes through the nature reserve.
Participants must register on race day and attend the mandatory briefing. Trainers or running shoes must be worn for the whole event. Mandatory items include a number band, swim hat for swim sections, a whistle, a waterproof packaged pressure bandage or field dressing, and a soft collapsible cup for aid stations. Wetsuits are mandatory if the water temperature is below 14°C. Random kit checks will be carried out.
Teams comprise two adults who must remain within 100m on land and 10m in the water. Solo entrants must be 18 or over. Cut offs are based on set swim and run paces and are detailed in the Race Handbook. Anglian Water parking charges apply at the venue.
The event operates a zero tolerance litter policy. Photos and film taken during the event may be used for marketing or media purposes. Visit the organization's website for the most recent information.
Start Times
- 8:30am – 21k Team & Solo
- 8:35am – 10k Solo
- 9:00am – Intro 5k Solo
Parking
Please note: Anglian Water parking charges apply at this venue.
As Keen As Mustard Events – Race Information and Rules
Registration & Race Briefing
- All participants must register at Event Registration on race day
- At registration, you will collect your swim hat and number band.
- Attendance at the race briefing is mandatory and takes place 15 minutes before your start time.
- The Racebook forms part of the mandatory Race Safety Brief and will be available on the website and linked in your final email (sent once entries have closed).
- Please check your spam/junk folder, as these emails can sometimes end up there.
Mandatory Equipment
- You must carry all equipment required for the event from start to finish. Failure to do so makes you ineligible for prizes.
- You must wear your number band at all times and your swim hat during all swim sections.
- A whistle is required to attract attention in an emergency.
- Trainers/running shoes must be worn throughout the event.
- You must carry a soft/collapsible cup for use at aid stations.
- Wetsuits are mandatory if the water temperature is below 14°C.
- A waterproof-packaged pressure bandage/field dressing must be carried.
- You may compete in a wetsuit, trisuit, or swimming gear/lightweight T-shirt (depending on water temperature).
- Random kit checks will be carried out at the start; participants not properly equipped will not be permitted to race.
Optional Equipment
- You may use paddles, pull buoys, or other flotation aids, provided they are no larger than 100cm x 60cm.
Timing
- Timing is measured electronically from the gun start until you cross the finish line.
Litter Policy
- We operate a zero-tolerance policy on littering.
- Dispose of waste responsibly at aid stations or hand it to the next marshal.
- Dropping litter will result in disqualification and removal from the course.
Withdrawal & Retiring
- Marshals’ and Race Directors’ decisions are final. Abusive language or behaviour will not be tolerated.
- Race officials may remove any participant they judge to be fatigued or unsafe to continue.
- If you withdraw, report to the nearest marshal and then return to the finish area to hand in your number band.
- Failure to return your number band incurs a £10 charge.
Course Hazards
- Sections of the run are off-road
