Walking Holidays and Outdoor Adventures in Killarney National Park

Lakes, Mountains, and Ireland’s First National Park

A UNESCO Biosphere Reserve in the heart of County Kerry.

Killarney National Park, founded in 1932, is Ireland’s oldest and one of its most celebrated landscapes for walking holidays and outdoor adventures. Spread across more than 26,000 acres, it combines mountain ranges, oak woodlands, waterfalls, and the world-famous Lakes of Killarney. As part of the Wild Atlantic Way and a UNESCO Biosphere Reserve, it’s a place where natural beauty meets heritage — with Ross Castle, Muckross House, and ancient monastic sites scattered across the park.

Walking here ranges from gentle lakeside strolls to challenging mountain ascents, with the MacGillycuddy’s Reeks — including Carrauntoohil, Ireland’s highest peak — on the park’s doorstep. Whether exploring the Gap of Dunloe, the oak forests of Muckross, or the ridges of Purple and Torc Mountains, Killarney offers trails for every type of walker.

Counties: Kerry

Featured Trails

The Kerry Way (sections in Killarney)
Ireland’s longest waymarked trail, circling the Iveragh Peninsula. The Killarney stage includes lakeside paths, the Black Valley, and dramatic mountain passes.

Muckross & Dinis Peninsula Loops
Gentle trails along the shores of Lough Leane, passing Muckross House, gardens, and woodlands.

Torc Waterfall & Torc Mountain
A short walk to the famous cascade, or a longer climb up Torc Mountain for panoramic views of the Lakes of Killarney.

Gap of Dunloe
A glacial valley walk between rugged mountains and lakes, often combined with a boat trip back across the lakes.

Purple & Tomies Mountains
Challenging upland hikes with views over the entire national park.

Adventure Highlights

Ireland’s first national park, UNESCO Biosphere Reserve
Lakes of Killarney — boating, walking, and scenic vistas
Torc Waterfall and Muckross House & Gardens
Gap of Dunloe — iconic glacial valley walk
Carrauntoohil & MacGillycuddy’s Reeks nearby
A mix of family-friendly walks and demanding mountain routes

Explore the Area

Killarney Town – bustling hub and gateway to the park
Muckross – heritage house, gardens, and traditional farms
Gap of Dunloe – dramatic valley between high mountains
Ross Castle – 15th-century castle on Lough Leane
Kenmare – charming town at the southern edge of the park

Frequently Asked Questions

What are the best walks in Killarney National Park?

The Muckross loops, Torc Waterfall, the Gap of Dunloe, and sections of the Kerry Way are among the most popular.

Is Killarney suitable for family walking holidays?

Yes. Lakeside loops and shorter trails like Muckross and Torc Waterfall are ideal for families.

Can you climb mountains in Killarney?

Yes. Torc, Purple, and Tomies offer great day hikes, while nearby Carrauntoohil is Ireland’s highest mountain for more experienced walkers.

When is the best time to walk in Killarney National Park?

Spring to autumn offers the best weather and trail conditions. Summer is lively, while spring and autumn bring quieter paths and colourful landscapes.

Do I need a car to explore Killarney National Park?

Not necessarily. Many trails, including Muckross and Ross Castle, are accessible from Killarney town. Public transport and local tours also connect to the Gap of Dunloe and beyond.