Basalt Breaks Giants Causeway Coast Marathon 21 km
RunningPoint to point
Date
Sat, 11 Sept 2027
Start
13:00
Venue
Beach Road, Portballintrae, County Antrim, Northern Ireland
Portballintrae, County Antrim
Countdown
September
A half marathon that goes one way: bus out to Larrybane Quarry, then run back to Portballintrae. Point to point, so you finish where you started the day.
Key facts
01Bus leaves Portballintrae at 12:15 for the 13:00 start at Larrybane Quarry
02Point to point: the race finishes in Portballintrae
Create a free training plan for the Basalt Breaks Giants Causeway Coast Marathon 21 km
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The course
The route
Portballintrae
Distance21km
StartElevation
0 kmDrag map to rotate20.4 km
Weather
Mid-September, Portballintrae
15°CTypical high
11°CTypical low
7°CColdest in 20 years
60%Days with rain
Highs around 15°C and lows around 11°C, but it has dropped to 7°C. Rain on 60% of days.
NASA POWER data, 2006-2025, the week either side of race day
2024 results
Who finishes, and how
#RiderTimeAvg speed
01Catriona Macdonald1:38:5112.7 km/h
02Emma-Raha Fanayan1:49:3211.5 km/h
03Sarah Lavery1:50:2511.4 km/h
198
Women finishers
2:50:54
Median time
7.4 km/h
Median speed
Women · 2024 results, as published by the organiser.
How fast could you finish?
Get a prediction based on your recent training
Organiser
Training
Training for the Basalt Breaks Giants Causeway Coast Marathon 21 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 Basalt Breaks Giants Causeway Coast Marathon 21 km plan targets
Typical sessions
21 km
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
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Get your Basalt Breaks Giants Causeway Coast Marathon 21 km plan.
7-day free trial, no card required.
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