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Ireland
Leinster
Dublin

Bohernabreena Upper & Lower Reservoir loop

Routes
Hiking trails & Routes
Ireland
Leinster
Dublin

Bohernabreena Upper & Lower Reservoir loop

Moderate

4.9

(14)

91

hikers

Bohernabreena Upper & Lower Reservoir loop

03:07

11.9km

100m

Hiking

This moderate 7.4-mile (11.9 km) loop around Bohernabreena's reservoirs offers scenic views and takes about 3 hours.

Last updated: February 26, 2026

Waypoints

A

Start point

Parking

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1

2.93 km

Bohernabreena Lower Reservoir

Highlight • Lake

A long reservoir area in the quiet Glenasmole valley, where wide gravel paths run completely car-free along the Upper and Lower Reservoirs. The landscape combines open water, pine forest and rugged hills, with regular sightlines towards the Dublin Mountains. The route is flat and quiet, ideal as an introduction to the mountain area or as a relaxing nature section on a longer tour. Birds, waterfowl and sometimes deer on the slopes give the area a distinct nature reserve feel.

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Tip by

2

4.32 km

The Upper Reservoir is the highest lake in the Glenasmole valley and feels a lot wilder and more remote than its lower neighbour. At this point on the south-eastern shore, you are riding deep into the heart of the catchment area, where the wooded slopes of the Dublin Mountains seem to drop straight into the deep, dark water.

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B

11.9 km

End point

Parking

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Way Types & Surfaces

Way Types

6.69 km

4.34 km

613 m

129 m

125 m

Surfaces

7.81 km

2.46 km

1.48 km

< 100 m

< 100 m

< 100 m

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Elevation

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (190 m)

Lowest point (110 m)

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Weather

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Friday 3 July

21°C

16°C

31 %

Additional weather tips

Max wind speed: 29.0 km/h

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Frequently Asked Questions

What is the terrain like on the Bohernabreena Reservoir loop?

The terrain is generally flat, making it accessible for most. You'll encounter both paved sections and natural forest paths. Be aware that some areas, especially if you venture off the main route, can be muddy or silty, so hiking boots are recommended.

What kind of views and natural features can I expect along the route?

You'll enjoy incredible views of the Bohernabreena Lower Reservoir and Bohernabreena Upper Reservoir, set within the deep glacial Glenasmole Valley. Kippure mountain is a prominent feature, and the path is bordered by forests. You'll also see the River Dodder with picturesque arched bridges and distant views of St. Anne's Cemetery ruins.

Is the Bohernabreena Upper & Lower Reservoir loop suitable for beginners or families?

Yes, this trail is considered easy and very doable, making it suitable for most ages and fitness levels, including beginners and families. There are options for shorter walks if you prefer, such as a 4 km loop focusing on the lower reservoir.

Where can I park for the Bohernabreena Reservoir loop?

Parking is available near the trailhead in the Glenasmole Valley. Specific parking areas are usually found close to the reservoir access points, but it's always a good idea to check local signage upon arrival.

Can I reach the Bohernabreena Reservoir loop by public transport?

While the area is accessible, public transport options directly to the trailhead might be limited. It's advisable to check current bus routes and schedules for services that go into the Glenasmole Valley or nearby areas, potentially requiring a short walk to the starting point.

Is the Bohernabreena Reservoir loop dog-friendly?

Yes, the trail is generally dog-friendly. However, as the area is rich in wildlife and often has livestock like sheep and cows, it's crucial to keep dogs on a leash to ensure their safety and respect the local environment and farming activities.

When is the best time of year to hike this trail?

The trail is enjoyable year-round. Spring and summer offer lush greenery and wildflowers, while autumn brings beautiful foliage. Even in winter, it can be a rewarding walk, though some sections might be muddier, so appropriate footwear is key.

Are there any permits or entrance fees required for the Glenasmole Valley or the trail?

No, there are typically no permits or entrance fees required to access the Glenasmole Valley or to hike the Bohernabreena Reservoir loop. It's freely accessible for public enjoyment.

What wildlife can I spot along the Bohernabreena Reservoir loop?

The area is rich in flora and fauna. You might spot various wildflowers, and it's common to see deer, cows, and sheep, adding to the rural charm of the hike.

Does this trail connect with other well-known paths?

Yes, the route intersects with sections of the Dublin Mountains Way, a long-distance trail, and also parts of the Dodder Greenway. This offers opportunities for extended hiking if you wish to explore further into the wider area.

What makes the Bohernabreena Reservoir loop particularly notable?

Beyond its natural beauty, the reservoirs themselves have historical significance, built in the 1880s for flood control and water supply. Its setting in the Glenasmole Valley, bordering the Wicklow National Park and Dublin Mountains, offers a unique blend of nature close to the city, making it an 'unexpected treasure'.

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