Cavan Burren Geopark Trail

A journey through deep time in the UNESCO Marble Arch Caves Global Geopark. This route explores Cavan's remarkable geology - from 330-million-year-old limestone pavement to ice age landscapes and Neolithic tombs older than the pyramids.

Why This Route?

The Cavan section of the geopark is underexplored:

• Ancient geology - Limestone, caves, and disappearing rivers
• Megalithic heritage - Court tombs and standing stones
• Walking paradise - The Cuilcagh Boardwalk (Stairway to Heaven)
• Cross-border experience - Seamlessly links with Fermanagh
• Fewer crowds - Much quieter than the Northern side

Where to Stay

At 68 kilometres this geopark trail is a single-day outing, but the remote Blacklion-to-Glangevlin area has limited accommodation. Cavan Town, the county capital roughly forty minutes southeast, offers the broadest range of hotels and guesthouses and works well as a staging point for the drive up to Cuilcagh and the Burren Park.

Cavan Town

Basing yourself in Cavan means an early-morning drive to the Cuilcagh Boardwalk trailhead (essential if you want parking before 9 am on weekends), followed by the Shannon Pot and Cavan Burren Park on the way back south. The town has enough restaurants and pubs for a comfortable evening, and its central position also lets you combine this route with the Cavan Lakelands loop on a second day.

The Route

Starting from Blacklion

This border village is the gateway to the geopark. The atmosphere of a frontier town lingers from the days when crossing the border was more complicated.

Cuilcagh Boardwalk (Stairway to Heaven)

Ireland's most famous hiking boardwalk. The 7.5km trail runs over blanket bog to the summit of Cuilcagh Mountain (665m), whose ridge is the county boundary between Cavan and Fermanagh.

The trailhead car park is on the Marlbank Road in Fermanagh, so the drive up from Blacklion crosses the border at Belcoo. It is an unmarked crossing on an ordinary road, but for that stretch the speed limits are in miles per hour and the car park charges in pounds.

Trail Details:

• Distance: 15km return
• Time: 4-5 hours
• Difficulty: Moderate (stepped boardwalk)
• Arrive early - parking fills by 9am on weekends

Shannon Pot

A mysterious spring pool - the official source of the River Shannon. Underground streams from Cuilcagh's limestone emerge here to begin Ireland's longest river.

Cavan Burren Park

This free-access park contains a remarkable concentration of features:

Geological

• Limestone pavement similar to the Clare Burren
• Caves (some accessible, most dangerous)
• Sinkholes and disappearing streams

Archaeological

• Giant's Grave - A 5,000-year-old court tomb
• Standing stones - Bronze Age ritual landscape
• Ring forts - Early medieval farming settlements

Sweathouse Trail

Follow the marked trail to discover one of Ireland's traditional sweathouses - stone structures used like saunas until the 19th century. Unique to Ulster and Connacht.

Cavan Way

The long-distance walking trail passes through the area. Day sections can be walked, including a beautiful route between Blacklion and Dowra.

Dowra

A quiet village on the infant Shannon. The river is small enough to jump across here. Traditional pubs offer refreshment.

Glangevlin

An Irish-speaking valley (Gaeltacht) with traditional culture still alive. One of the most remote communities in Ireland.

Walking Options

Cuilcagh Boardwalk

• Distance: 15km return
• Time: 4-5 hours
• Difficulty: Moderate
• Highlights: Bog, views, summit cairn

Cavan Burren Park Trails

• Distance: 2-6km loops
• Time: 1-3 hours
• Difficulty: Easy/Moderate
• Highlights: Tombs, pavement, caves

Cavan Way (Blacklion to Dowra)

• Distance: 12km
• Time: 4-5 hours
• Difficulty: Moderate
• Highlights: River, forest, open country

Understanding the Geopark

The Limestone Story

330 million years ago, this area was a shallow tropical sea. The shells of countless sea creatures accumulated to form limestone. Later, water dissolved the rock to create caves and karst features.

The Ice Age

12,000 years ago, glaciers carved the landscape. When the ice melted, Cuilcagh's summit remained bare - a mountain-top karst landscape unique in Ireland.

Human Settlement

People arrived here 6,000 years ago, building the court tombs and later the ring forts that dot the landscape.

Practical Tips

1. Boardwalk parking fills early - Arrive before 9am
2. Weather is unpredictable - Always bring waterproofs
3. Limited facilities - Bring food and water
4. Border crossings - No checkpoints, but currency changes (Euro to Sterling)
5. Cavan Burren is free - Unlike Clare's Burren visitor centres

What to Bring

• Hiking boots (essential for Cuilcagh)
• Waterproof jacket
• Water and snacks
• Camera
• Layers - summit weather is different from valley

Before You Drive This Route

At 75km the Cavan Burren Geopark Trail looks like a 3.5 hours drive on paper. Allow 1 day and you will actually see it. The Irish driving rules and road signs guide covers speed limits, signage and the penalty points system, which is worth ten minutes before you set off. For what a trip like this costs in 2026, from fuel to beds, see the budget guide. Most visitors hire at the airport; our guide to renting a car in Ireland covers deposits, excess and what to check before you drive off the lot. More drives in the same corner of the country are on the County Cavan page, and the Cavan Lakelands Loop pairs naturally with this one.