Gaelforce Great Lake Swim

Ireland flag County Donegal, Donegal, Ireland

244 days left

Gaelforce Great Lake Swim worldsmarathons.com
Date 10 Jul, 2027
Races 3 distances
Entry fee €66.00 – €75.00
Runner rating Be the first to rate
Gaelforce Great Lake Swim

About the event

Experience the enchanting waters of Lough Derg near Portumna with the Gaelforce Great Lake Swim, part two of the prestigious Gaelforce Great Swim Trilogy. This unique freshwater swim invites participants to explore the mystical islands and ancient ruins that dot the lake's surface against a backdrop of Ireland’s stunning countryside.
The event offers three distinct distances catering to all levels: beginners can start with an introductory loop designed for building confidence in open water, while more experienced swimmers have options ranging from a challenging middle distance to the full Ironman swim. Swimmers are encouraged to choose a course that matches their skill level and comfort zone. Whether you prefer the buoyancy of a wetsuit or the raw sensation of swimming “skins,” this event accommodates both preferences.
Safety is paramount at Gaelforce Great Lake Swim, with comprehensive measures in place to ensure every participant enjoys a secure and thrilling experience. Immerse yourself in the serene beauty of Lough Derg on July 10, 2027, for an unforgettable aquatic adventure.

Races offered

10Jul

2km swim

Running, Water sports

Distance
2K
Countdown
244 days
Entry fee
€75.00
10Jul

3.9km swim

Running, Water sports

Distance
3.9K
Countdown
244 days
Entry fee
€75.00
10Jul

750m swim

Running, Water sports

Distance
0.8K
Countdown
244 days
Entry fee
€66.00

Weather history

3-year monthly averages for July in County Donegal.

Temperature11.0° / 16.3°
Feels like8.5° / 13.6°
Sunshine hours7h 36m
Rainfall4.7 mm
Snowfall—
Wind15.0 km/h (Gentle breeze)
Humidity84.6%
Max UV indexModerate (5.6)
Sweat lossLow
Course conditionsFirm and slightly soft
Sunrise05:15
Sunset21:57

About County Donegal

Learn more about the host city, County Donegal.

Scenic view of

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.

Read more

Hotels & places to stay

Things to do nearby

Tours and activities near County Donegal, powered by Viator.

Loading nearby tours and activities…

Video

Watch highlights and course previews from previous years.

Runner reviews

Read what other athletes have to say about their experience at the Gaelforce Great Lake Swim.

No reviews yet

Be the first to share your experience with the community!

Suggest an edit

Spotted an error or missing detail about the Gaelforce Great Lake Swim? Help us improve.

Nearby races

Explore other exciting events happening in this same region.

Hand-picked events we think you’ll love.

  • 2025 Hawk Trot Nov 08, 2026

    2025 Hawk Trot

    Support the Melrose High School XC teams for a hilly 5K race on the team's home course. The race will be held Saturday,…

    Read more about 2025 Hawk Trot
  • 2026 Colony Grill 'Hot Oil' 5K Nov 08, 2026

    2026 Colony Grill 'Hot Oil' 5K

    On a crisp autumn morning in Fairfield, the sun rises over the picturesque landscape of 1520 Post Road, setting the sta…

    Read more about 2026 Colony Grill 'Hot Oil' 5K
  • 2026 Silver Strand Half Marathon, 10 Miler, 12K & 5K Nov 08, 2026

    2026 Silver Strand Half Marathon, 10 Miler, 12K & 5K

    https://runsignup.com/Race/CA/Coronado/SilverStrandHalfMarathon10Miler12K5K. Fees range from $21 to $75, with discounts…

    Read more about 2026 Silver Strand Half Marathon, 10 Miler, 12K & 5K
  • Harborside Half Marathon & 5K Nov 08, 2026

    Harborside Half Marathon & 5K

    Anchors away, New England! The 12th Annual Harborside Half Marathon & 5K returns to Newburyport, MA on November 8, 2026…

    Read more about Harborside Half Marathon & 5K
  • Harvest Hustle Nov 08, 2026

    Harvest Hustle

    We’re excited to invite you to second annual CAES 5K and 1-Mile Fun Run! This event is open to everyone — runners, walk…

    Read more about Harvest Hustle
  • Joltin' Joe 5K Nov 08, 2026

    Joltin' Joe 5K

    Join the Joe Warfield Memorial Foundation as we celebrate the life of one of Oklahoma City's favorite runners. The Jolt…

    Read more about Joltin' Joe 5K
  • OTILLO Swimrun Austin Nov 08, 2026

    OTILLO Swimrun Austin

    VISIT OUR RACE WEBSITE - CLICK HERE

    Read more about OTILLO Swimrun Austin
  • Solar Strides 5K Nov 08, 2026

    Solar Strides 5K

    We're so excited to host the 2nd Solar Strides 5K to fundraise for SolarEquity! SolarEquity is a student-run non-profit…

    Read more about Solar Strides 5K

Get race deals and updates

Subscribe to our newsletter for curated race picks and discounts.