Lough Swilly Open Water Swim 2026

Lough Swilly is one of only three glacial fjords in Ireland, a long sea inlet running between the Inishowen Peninsula and the Fanad Peninsula in Donegal. On the morning of 16 August 2026, it becomes the setting for an organised open water swim with three distance options - 400m, 800m, and 1.6km - run by the Lough Swilly Open Water Swimming Club. This is the kind of event that suits first-timers looking to tick off their first lough swim as much as it suits seasoned open water regulars chasing a personal best. The setting is genuinely spectacular, the organisation is thorough, and a hot breakfast waiting on the other side makes it even easier to talk yourself in.

What to expect

Heats are assigned by age group, with the first wave starting at 10:00am. All three distances start and finish at Lough Swilly Beach near Buncrana, so there is no point-to-point logistics to worry about. The event runs under Irish Water Safety guidelines, with safety boats, lifeguards, and marshals positioned throughout the course for every heat. A wetsuit or buoyancy aid is mandatory - in August, water temperatures on the lough typically sit around 14 to 16 degrees Celsius, which is bracing but manageable in neoprene. Entry is at GBP 20 per swimmer and pre-entry is essential; places are not available on the day. After your swim, a post-swim breakfast and hot drinks are laid on, which is reason enough to linger.

Getting there

Buncrana is in Co. Donegal, roughly 30 minutes by road from Derry city. Take the A2 west from Derry across the border into Donegal and follow signs for Buncrana. The lough beach has on-site parking. Translink buses run between Derry and Buncrana, though if you are travelling with swim gear a car is more practical. The Foyle Bridge makes the cross-border run straightforward from the Derry side.

While you’re in Derry

Buncrana itself has cafes and shops for a post-event refuel, and the drive back along the A2 follows the lough shore with fine views towards the Fanad Peninsula. There is more to see in Derry and across Co. Derry.

Good to know

• Saturday 16 August 2026, first heat at 10:00am
• Three distances: 400m, 800m, 1.6km
• Entry: GBP 20 per swimmer
• Wetsuit or buoyancy aid mandatory
• Pre-entry essential - check aqua.ie for booking
• Water temperature typically 14 to 16°C in August
• Run under Irish Water Safety guidelines with full water cover