Slieve Donard Hike: best route, distance, when to visit, and more

Slieve Donard is Northern Ireland’s highest mountain. So, here is everything you need to know about completing the Slieve Donard hike.

Located in County Down, the Slieve Donard walk and the Mourne Mountains stand proudly above the surrounding towns of Newcastle, Newry, Annalong, Kilkeel, and Warrenpoint.

Their striking presence as they sweep down to the Irish Sea and the fact that they are recognised as an ‘Area of Outstanding Natural Beauty’ make them a must-visit during your time in Northern Ireland.

Standing at an impressive 850 m (2789 ft) in height, Slieve Donard is not only the highest peak in the Mournes but the whole of Northern Ireland and the wider province of Ulster.

So, for keen hikers and lovers of the great outdoors, the Slieve Donard hike is a must. From the best route to take and the distance to when to visit and what else to see in the area, here is everything you need to know about completing the Slieve Donard hike.

Basic overview – all you need to know

  • Distance: 9.2 km (5.8 miles return)
  • Start point: Donard car park or Bloody Bridge
  • Parking: Donard car park or Bloody Bridge Car Park
  • Difficulty: Moderate to strenuous. Rough terrain and steep climb at various points.

Total time: Four to five hours

Best route – how to get to the top

The slieve donard walk.

The best route to take on the Slieve Donard hike starts in Donard Park car park in Newcastle. Leave your car here and take the well-defined trail through Donard Forest Park, also known as Donard Wood, along the Glen River as you start your ascent.

As you make your way through the forest, continue straight, and you will cross a number of bridges until you reach a clearing. From here, you will be able to see Slieve Donard towering before you.

The path continues to be easy to follow as you make your way up to the saddle between Slieve Donard and Slieve Commedagh, at which point you will be greeted by the Mourne Wall – this is a great place to stop for a bite to eat as the wall provides shelter from the elements.

Once you’ve reached this point, turn left and follow the wall as it will guide you to the peak. Bear in mind that there are several false peaks on this part of the hike, so don’t get too excited if you think you’ve reached your destination.

While this is the easiest route, it can often get very busy when the weather is good. So, if you fancy a quieter hike, an alternative route starts at Bloody Bridge and follows the river to reach the peak of Slieve Donard. Here, you will also be treated to amazing views.

Address: 5 Donard Park, Newcastle BT33 0HL

Distance – how long the hike will take

Slieve Donard is a fantastic hike.
Credit: Tourism Ireland

From Donard car park to the summit is 4.6 km (2.9 miles), so a return hike will be a total of 9.2 km (5.8 miles).

While it is a relatively short hike, a steep climb will mean you need a decent amount of time to complete the walk.

Overall, hiking Slieve Donard should take around four or five hours to complete. Along the way, you will see some truly stunning sights.

When to visit – weather and crowds

Due to the rocky terrain of the paths to the summit of the Slieve Donard hike, it is best to visit in mild conditions. So, spring, summer, or early autumn will be your best bet weather-wise.

However, it is important to note that, as with any mountainous region in Ireland, the weather can be very changeable, so make sure to pack light layers that you can take off and put on as you like.

As Slieve Donard is the highest peak in Northern Ireland, and it happens to be a very manageable hike for anyone with a relative fitness level, it can often get very busy when the sun comes out.

So, to avoid the crowds, we would recommend visiting on a weekday in the spring or early autumn.

What to bring – pack the essentials

What to bring on the slieve donard walk.
Credit: snappygoat.com

We would recommend wearing a decent pair of hiking boots or sturdy trainers as the terrain on the Slieve Donard walk is very rocky, so you want to make sure you have stable footing.

As previously mentioned, the weather in the Mourne region can be very changeable and thus, it is important to pack light layers and rain gear that you can put on and take off as you feel. Also, be sure to check the weather forecast regularly before your trip.

As this hike will last around four or five hours, make sure you also bring an adequate supply of food and water to keep your energy levels up as you make your way to the summit.

What to see – incredible views and other things to do in the area

What to see.

The walk itself is stunning. You will be treated to a mix of woodland, waterfalls, and the beautiful stone walls that run the length of the mountain. In fact, the 22-mile-long Mourne wall is one of its most distinct features.

From the summit, you will be treated to fantastic views of the surrounding Mourne Mountains, Newcastle town and the Irish Sea below. 

If you do the Slieve Donard hike on a clear day, you may even be treated to views as far as the Isle of Man, the Wicklow Mountains, and the peaks of Wales, Scotland, and Donegal! You can also see the long stretch of Newcastle Beach!

Once you have finished the Slieve Donard mountain hike, you may also want to take a stroll along the Newcastle Promenade.

This cute little coastal town is home to a number of great shops, amusements, and restaurants – the perfect way to spend a sunny day!

Other notable mentions

All you need to know about the Slieve Donard walk.
Credit: Instagram / @lisagorman29

Beann Boirche/Sliabh Slangha: Slieve Donard’s name has been through a few changes in the past, and these are two of them.

Slieve Binnian: Slieve Binnian is another of the seven peaks of the Mourne mountain range. It is to the southwest of Donard.

FAQs about Slieve Donard

Is the Slieve Donard walk open?

Yes, this walk is open and welcomes hikers all year round.

How long does it take to walk up Slieve Donard?

On average, it takes around four to five hours to complete this hike.

What should I expect when walking Slieve Donard?

Expect to be overwhelmed with the beauty of this mountain range! The walk is a very achievable one, but the last half an hour gets increasingly steeper so just take it at your own pace.

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