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Gaelforce Great Lake Swim

County Donegal, Donegal, Ireland

calendar_today 11 Jul, 2026

sell €82.00 – €91.00

About the Event

Embark on an extraordinary aquatic journey at the Gaelforce Great Lake Swim, the second leg of the prestigious Gaelforce Great Swim Trilogy. This captivating open water event unfolds along the serene waters of Lough Derg near Portumna, offering a one-of-a-kind freshwater swimming experience in Ireland’s enchanting countryside.
Swimmers will navigate through the lake's mystical islands and ancient ruins, immersing themselves in the rich history and natural beauty that surrounds them. The Gaelforce Great Lake Swim caters to all levels of swimmers, from beginners looking to build confidence to experienced athletes seeking a new challenge. Three distinct distances are available: an introductory loop for newcomers, a more demanding middle distance option, and the full Ironman swim for those ready to push their limits.
Participants can choose whether to wear wetsuits or compete in skin suits, ensuring that everyone finds a comfortable entry point regardless of preference. Rigorous safety protocols have been established to provide swimmers with peace of mind throughout the event, allowing them to fully enjoy the thrill and magic of Lough Derg's waters.
The Gaelforce Great Lake Swim promises an unforgettable adventure for all who venture into its pristine lakeside setting.

Races Offered

2km swim

Jul 11, 2026

straighten

Distance — 2K

terrain

Type — Water sports

timer

6 days remaining

sell

€91.00

3.9km swim

Jul 11, 2026

straighten

Distance — 3.9K

terrain

Type — Water sports

timer

6 days remaining

sell

€91.00

750m swim

Jul 11, 2026

straighten

Distance — 0.8K

terrain

Type — Water sports

timer

6 days remaining

sell

€82.00

Weather History

These values represent the 3-year monthly averages for July in County Donegal.

thermostat Temperature

11.0° / 16.3°

wb_sunny Feels like

8.5° / 13.6°

light_mode Avg sunshine hours

7h 36m

water_drop Avg rainfall

4.7 mm

ac_unit Avg snowfall

—

air Avg wind speed

15.0 km/h (Gentle breeze)

opacity Sweat loss rate

Low

terrain Course conditions

Firm and slightly soft

sunny Max UV Index

Moderate (5.6)

humidity_mid Humidity

84.6%

wb_twilight Sunrise

05:15

nightlight Sunset

21:57

About County Donegal

Learn more about the host city, County Donegal.

County Donegal is in Northwest Ireland and Lakelands Region and is the northernmost county in Ireland, stretching further north than any part of Northern Ireland. It's a large county but mostly hill and forest, with a population in 2022 of 167,000. Historically part of Ulster, Donegal was one of its three counties that joined the Republic of Ireland, while the other six are in Northern Ireland. So it's referred to as part of "the south" in spite of being so far north.