The Seven Sisters Skyline is widely recognized as Ireland's premier and most challenging mountain running event, set against the stunning backdrop of the Derryveagh Mountains in County Donegal. It features three demanding courses: a 55km ultra-marathon with over 4,000m of ascent, a 30km race with more than 2,100m of ascent, and a 16km option with 800m+ ascent. This event is a significant draw for elite trail runners worldwide, who are tested by its technical terrain and substantial elevation gains. Participants are rewarded with unparalleled, breathtaking views across the dramatic Donegal landscape, making it a truly iconic race in the international mountain running calendar.
Race
55 km
Race Date:
20 September, 2025
The Seven Sisters Ultra 55km is Ireland's most demanding mountain ultra-marathon, traversing the rugged Derryveagh Mountains in County Donegal over seven iconic peaks. It challenges runners with 55km of technical terrain and over 4,000m of ascent, attracting elite athletes from around the globe.
Weather based on historical averages.
FAQs
What is the Seven Sisters Ultra 55km?
How long is the Seven Sisters Ultra 55km?
Where does the Seven Sisters Ultra 55km take place?
What is the elevation gain of the Seven Sisters Ultra 55km?
How can I prepare for the Seven Sisters Ultra 55km?
How do I choose the right training plan for the Seven Sisters Ultra 55km?
The Seven Sisters Ultra 55km is Ireland's most demanding mountain ultra-marathon, traversing the rugged Derryveagh Mountains in County Donegal over seven iconic peaks. It challenges runners with 55km of technical terrain and over 4,000m of ascent, attracting elite athletes from around the globe.
The Seven Sisters Ultra 55km is 55km long.
The Seven Sisters Ultra 55km takes place in Dunlewey, Co. Donegal, Ireland.
The Seven Sisters Ultra 55km elevation gain is 4000 metres, which Runna classifies as a Hilly race.
The best way to train for the next race is to use a personalised training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalised training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
What is the Seven Sisters Ultra 55km?
The Seven Sisters Ultra 55km is Ireland's most demanding mountain ultra-marathon, traversing the rugged Derryveagh Mountains in County Donegal over seven iconic peaks. It challenges runners with 55km of technical terrain and over 4,000m of ascent, attracting elite athletes from around the globe.
How long is the Seven Sisters Ultra 55km?
The Seven Sisters Ultra 55km is 55km long.
Where does the Seven Sisters Ultra 55km take place?
The Seven Sisters Ultra 55km takes place in Dunlewey, Co. Donegal, Ireland.
What is the elevation gain of the Seven Sisters Ultra 55km?
The Seven Sisters Ultra 55km elevation gain is 4000 metres, which Runna classifies as a Hilly race.
How can I prepare for the Seven Sisters Ultra 55km?
The best way to train for the next race is to use a personalised training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
How do I choose the right training plan for the Seven Sisters Ultra 55km?
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalised training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
More
Sport:
Running
Tags:
Nature
UTMB
Altitude
This event listing is for informational purposes only. Runna is not affiliated with, endorsed by, or sponsored by Seven Sisters Skyline or Sports Backers. All event details are based on publicly available information and are provided solely to help users discover running events. Runna does not use any official logos, images, or proprietary content from this event or its organiser. Any trademarks or names mentioned are used descriptively to identify the event in a factual manner. For the most accurate and up to date information (including to register or purchase an entry to the event), please visit the Seven Sisters Skyline website.
