Date
Sat, 22 May 2027
Start
10:00
Venue
Grimsthorpe Castle, Bourne, Lincolnshire, PE10 0LY
Bourne, Lincolnshire
Countdown
May
One loop of the estate, 10 miles, and you're done. Gentle climbing and a friendly way into a day that gets far more serious for the ultra runners.
Key facts
01Minimum age 16
Create a free training plan for the The Grim Reaper 16 km
7-day free trial, no card required
The course
The route
Bourne
Distance16.1km
Total climb168m
StartElevation
0 kmDrag map to rotate16.1 km
Weather
Late-May, Bourne
17°CTypical high
8°CTypical low
2°CColdest in 20 years
42%Days with rain
Highs around 17°C and lows around 8°C, but it has dropped to 2°C. Rain on 42% of days.
NASA POWER data, 2006-2025, the week either side of race day
Results
Course verified. Results not yet available.
Organiser
OrganiserBog Dog Running (Steve Cole and Laura Bailey)
Websitebog-dog.co.uk
Instagram@bogdogrunning
Running since2013
Training
Training for the The Grim Reaper 16 km
We don't do generic plans. We combine deep knowledge of this race's demands with your recent training, then build a plan with you that progresses as you do.
Beina integrates directly with your existing tools to understand your current fitness, and synchronise your planned sessions.
Intervals.icuWhat a The Grim Reaper 16 km plan targets
Typical sessions
16 km with 168 m of climbing
Time on feet and fatigue resistance
Fuelling and pacing for the whole event
What your weeks look like
Typical sessions
Long runs that build time on your feet
Tempo and threshold sessions to hold race pace
Back-to-back weekend runs for fatigue resistance
Not a generic schedule
Typical sessions
Built from your current fitness and the time you actually have
Adapts every week as Beina learns how you respond
Syncs your sessions straight to Garmin and Wahoo
One clear next session, never a wall of spreadsheet
Entries open now
Get your The Grim Reaper 16 km plan.
7-day free trial, no card required.
Other races at The Grim Reaper
More events in May in United Kingdom
Calderdale Way UltraSat, 1 May 2027 · Heptonstall→Coniston Fell RaceSat, 1 May 2027 · Goosnargh→East Devon RoundSat, 1 May 2027 · Offwell→Isle of Wight Ultra ChallengeExpected Early May 2027 · Chale Green→Long Course WeekenderExpected Early May 2027 · Innerleithen→Muck n' Mac FestSat, 1 May 2027 · Innerleithen→
