Clypse and Kerrowdhoo Reservoir Track — Onchan to Baldrine via Central Manx Upland
Victorian reservoirs, Manx moorland, zero crowds.
Built to service the Clypse and Kerrowdhoo reservoirs constructed in the 1890s to supply Douglas with water, this farm-and-maintenance track runs east from the outskirts of Onchan across open moorland before looping around both reservoir margins and dropping toward Baldrine. The surface is a mix of compacted gravel and rough grass-centred double-track, with one gate crossing near the Clypse dam wall that requires a get-out. In wet conditions the northern approach above Kerrowdhoo deteriorates into soft peat ruts — nothing catastrophic, but enough to punish street tyres and keep the curious in their lane cars at home. Views across Douglas Bay and east toward the Manx coastline open up between the two reservoir basins and are about as good as it gets on a clear Manx morning.
This is a moderate high-clearance run, not a technical trail — a stock 4WD or even a capable all-wheel-drive with decent ground clearance handles it in dry conditions. Soft-roaders and lifted crossovers do fine in summer; come October the peat softens and you want a proper 4×4. No permit required, but stay on the defined track — this is active water-catchment land managed by Manx Utilities. Best May through September. Fuel in Douglas, five minutes away. Cell service is decent on the ridge. A half-day out and back or loop, perfect before catching the TT on a quieter week.
Trail Specs
| Difficulty | Moderate |
|---|---|
| Trail Type | High Clearance, Overland Route, Scenic Drive |
| Surface | Dirt, Gravel, Mixed |
| Features | Historic, Remote, Scenic |
| Length (miles) | 7 mi / 11.3 km |
| Duration | Half day |
| Max elevation (ft) | 1050 ft |
| Best season | May-September |
| Minimum vehicle | High-clearance AWD or 4WD |
| Nearest town | Onchan, Isle of Man |
| Land manager | Manx Utilities |
| Permit required | No |
| Cell service | Decent |
| Water crossings | No |
| Dispersed camping | No |
| Start coordinates | |
| End coordinates | |
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Location
Trail Conditions
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Frequently asked questions
Can a stock high-clearance AWD handle this trail, or do I need a lifted 4WD?
A stock high-clearance AWD — think Subaru Outback on the capable end, or a Defender, Hilux, 4Runner — handles this fine in dry conditions. The mixed dirt and gravel surface doesn't demand lockers or a lift, but low ground clearance will cause you grief on the rougher sections near the reservoir tracks.
Is this trail accessible year-round or does winter close it out?
Best season is May through September. Winter on the Manx uplands brings saturated ground, standing water, and fog that kills the views entirely. The track can get seriously boggy October through April — it's not officially closed, but conditions will likely beat you back.
Do I need a permit or permission to drive through Manx Utilities land?
Manx Utilities manages the reservoir infrastructure and surrounding land. No formal overlanding permit is required for the track, but access is subject to their land management rules — stay on the established track, respect any locked gates, and don't camp within the reservoir catchment areas without prior contact with Manx Utilities.
What's the hardest section and what should I expect?
The roughest going is on the upper track between Clypse and Kerrowdhoo reservoirs, where the surface breaks down to loose stone and rutted dirt with limited passing room. Nothing technically extreme, but the combination of off-camber sections and exposure to Manx weather can catch unprepared drivers off guard — take it steady and don't rush the ridge.
Is there anywhere to fuel up near the trailhead, and what's the deal with camping along this route?
Onchan sits right on the edge of Douglas and has fuel — sort it there before you head up, because there's nothing once you're on the upland. This is a half-day trail with no established dispersed camping on Manx Utilities land, so plan to overnight in Douglas or one of the Isle of Man's campsites rather than bivvying on the reservoir track.
Trail track
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