Mountain · Northern Ireland

Slemish

437 m1,434 ft

Easiest route: 0.5 km+182 m · about 0.5 h
Prominence: 149 m488 ft
Isolation: 10 km
Tonight: 1°CCloudy · Wind 22 km/h S

Slemish is a 437 m (1,434 ft) mountain in Northern Ireland, United Kingdom.

All facts

Elevation: 437 m · 1,434 ft
Nearest higher peak: Trostan (551 m)
Region: Northern Ireland, United Kingdom
Coordinates: 54.8813° N, 6.0969° W

Open the 3D view

Route

How to get to the top of Slemish

The shortest mapped walking route from where a car can get you, with distance and climb from the terrain model.

From Road end, 0.5 km WNW of Slemish

Distance: 0.5 kmone way
Climb: +182 m(597 ft up)
Time up: about 0.5 h
Difficulty: Grade not mapped

Slemish elevation profile

Download GPX (free, ODbL)KML

Routes © OpenStreetMap contributors, available under the ODbL. Climb from the terrain model. Trails change and maps miss things: check conditions locally.

3D map

Slemish 3D map

Drag to orbit · click, then scroll to zoom (or Ctrl/⌘ + scroll) · One finger scrolls the page · two fingers orbit and zoom · 6 × 6 km

Surface

Vertical scale

Topographic map

Slemish terrain and contours

20 m contours from the Copernicus GLO-30 terrain model. The route drawn is the easiest mapped one. Click two points on the map to draw your own cross-section.Tap two points on the map to draw your own cross-section.

Index contours every 100 mShowing west → east through the summit

West → east through the summit

Hover the profile to read elevation and distance.Tap or drag along the profile to read elevation and distance.

Weather

Slemish weather

Tonight · Cloudy · 1°C (34°F) · 0.2 mm · Wind 22 km/h S

Slemish forecast for the summit, about 437 m.

Tonight1°0.2 mm22 km/h S
Today4°10°20.9 mm51 km/h SW
Sun3°7°2.0 mm49 km/h W
Mon4°9°10.6 mm37 km/h SE
Tue5°8°4.4 mm38 km/h SW
Wed5°10°0.9 mm22 km/h SW
Thu7°11°3.2 mm23 km/h S
Fri9°10°23.9 mm24 km/h SE
Sat5°7°3.7 mm23 km/h W
Sun2°5°4.6 mm20 km/h NW

Forecast data: MET Norway, CC BY 4.0; daily low and high, precipitation total and strongest wind from the hourly data, model run Oct 23, 23:19 UTC.

Camping & parking

Camping & parking near Slemish

Campsites, parking, trailheads and mountain huts mapped in OpenStreetMap around Slemish, nearest first, by straight-line distance. Check access, fees and permits locally.

Nearest parking
0.5 km WNW
+2 more within 2.4 km
Directions Map

All mapped places 3

Place	Distance
Parking	0.5 km WNW
Parking	2.3 km NNW
Parking	2.4 km NNW

Slope

How steep is the route to Slemish?

The easiest mapped route, 0.6 km from 248 m to 437 m. Steepest stretch: 45°.

0 km · 248 m0.6 km · 437 m

0–15°0.2 km
15–30°0.3 km
30–45°0.1 km

Grades are averaged between profile points about 20 m apart, so short steeper steps don’t show.

Land cover

ESA WorldCover 10 m classification of the same area.

Grassland 95.2%Trees 3.9%Built-up 0.6%

Snow & ice means glaciers and year-round snow (a yearly average), not today’s snow cover.

Where it sits

Where Slemish sits

Ranked in 1

#29 Treks and hikes in United Kingdom

Nearby

Nearby places

More 1

Slieve DonardPeak · 849 m79 km S

Downloads

Slemish downloads: topographic map, heightmap, STL 3D model and DEM

Free files made in your browser from this page's terrain data. No sign-up; credit the sources below.

Print & wall

JPGSlemish satellite image (JPEG)Sentinel-2 true-colour image of the same area, taken 2026-08-24.

3D printing & 3D apps

GIS & GPS

GPXSlemish GPX / KML route downloadIn the route section. Mapped route for GPS apps and Google Earth, under the ODbL.

</>Embed this mapPaste this into your site to show the interactive 3D terrain, with a credit link back here.

<iframe src="https://topolu.com/embed/slemish" width="100%" height="480" style="border:0" loading="lazy" allowfullscreen title="3D terrain of Slemish"></iframe>
<p><a href="https://topolu.com/slemish" rel="nofollow">Topolu</a></p>

Free to use with credit: see the data sources

Accuracy

How accurate is this?

within 10 m This 3D map reads 434 m at the summit; the official height is 437 m.

A 30 m terrain model averages each cell, so a few metres either way is normal.

Source	Summit	Difference
Official height (Wikidata)	437 m	—
Copernicus GLO-30 (used on this page)	434 m	-3 m
Copernicus GLO-90	425 m	-12 m

Data sources

Terrain: Produced using Copernicus WorldDEM-30 © DLR e.V. 2010-2014 and © Airbus Defence and Space GmbH 2014-2018 provided under COPERNICUS by the European Union and ESA; all rights reserved. The European Union, ESA, DLR and Airbus incur no liability for any use of this data and do not endorse this service.
Imagery: Contains modified Copernicus Sentinel data 2026 (scene 2026-08-24)
Land cover: © ESA WorldCover project 2021 / Contains modified Copernicus Sentinel data (2021) processed by ESA WorldCover consortium
Facts: Wikidata (CC0)
Accuracy comparison: Includes Copernicus WorldDEM-90 © DLR e.V. 2010-2014 and © Airbus Defence and Space GmbH 2014-2018 provided under COPERNICUS by the European Union and ESA; all rights reserved. The European Union, ESA, DLR and Airbus incur no liability for any use of this data and do not endorse this service.
Forecast: Weather forecast from MET Norway (CC BY 4.0)
Sources: Wikidata · OpenStreetMap · GeoNames · Wikipedia

Slemish

From Road end, 0.5 km WNW of Slemish

West → east through the summit

Nearest parking

Data sources