DateExpected
Late August 2027
Based on past editions. We'll confirm when the organiser announces.
Venue
Ebrington Square, Derry/Londonderry, Northern Ireland
Derry/Londonderry, Northern Ireland / Tuaisceart Éireann
Countdown
August
The full i100 is the long way round: 177 km with a decent but not savage 2,171 m of climbing, a proper day out for a rider with a few big rides in the legs.
Key facts
01Registration opens at 07:00, ahead of the 08:00 start
02The i100 and i60 start together at 08:00, so pick your route before the day
Create a free training plan for the Inishowen 100 177 km
7-day free trial, no card required
The course
The route
Derry/Londonderry
Distance177km
Total climb2,171m
StartElevation
0 kmDrag map to rotate171.1 km
Weather
Late-August, Derry/Londonderry
16°CTypical high
12°CTypical low
7°CColdest in 20 years
76%Days with rain
Highs around 16°C and lows around 12°C, but it has dropped to 7°C. Rain on 76% of days.
NASA POWER data, 2006-2025, the week either side of race day
Results
Course verified. Results not yet available.
Organiser
Training
Training for the Inishowen 100 177 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 Inishowen 100 177 km plan targets
Typical sessions
177 km with 2,171 m of climbing
Endurance and fatigue resistance over the full distance
Fuelling and pacing for the whole event
What your weeks look like
Typical sessions
Long endurance rides building toward the full distance
Threshold and sweet-spot work for sustained power
Sustained climbing repeats on real gradients
Group rides for drafting and bunch-riding skills
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 Inishowen 100 177 km plan.
7-day free trial, no card required.
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