It is widely known that Standedge Tunnel is the longest canal tunnel in the country. But what about the second longest, third longest, etc? For comparison, this page lists those canal tunnels that are over one mile or 1500 metres in length.
| Tunnel | Canal | Length | Opened | Other information | |
| Standedge | Huddersfield Narrow | 5210m | 3.24 miles | 1811 | disused since 1940s, re-opened in 2001, width restrictions, boat passage is escorted and must be booked |
| Strood | Thames and Medway | 3595m | 2.23 miles | 1824 | from 1844 tunnel shared with single rail track, in 1846 canal infilled, double rail track built |
| Sapperton | Thames and Severn | 3490m | 2.17 miles | 1789 | disused since 1927, partly re-opened 1996 for trip boat at Coates end |
| Lapal | Dudley No 2 | 3470m | 2.16 miles | 1798 | disused since 1917 |
| Dudley | Dudley No 1 | 2884m | 1.79 miles | 1792 | boats towed through by electric tug, height restrictions |
| Butterley | Cromford | 2800m | 1.75 miles | 1794 | disused since 1900 |
| Blisworth | Grand Union | 2794m | 1.74 miles | 1805 | |
| Netherton | BCN Netherton Branch | 2768m | 1.72 miles | 1858 | |
| Harecastle | Trent and Mersey | 2675m | 1.66 miles | 1827 | |
| Harecastle Old | Trent and Mersey | 2650m | 1.65 miles | 1777 | disused since 1900 |
| Norwood | Chesterfield | 2633m | 1.64 miles | 1775 | disused since 1907 |
| Wast Hill | Worcester and Birmingham | 2492m | 1.55 miles | 1815 | |
| Morwell Down | Tavistock | 2322m | 1.44 miles | 1816 |
Canal built for 25ft x 4ft 6in iron tub boats. A short distance from downstream end of tunnel,
loads were transferred to an inclined plane descending 237 ft (72m) to Morwellham Quay on the River Tamar. Navigation of canal and tunnel ceased around 1890 but both still in use supplying water to hydro-electric plant at Morwellham Quay. |
| Oxenhall | Herefordshire & Gloucestershire | 2000m | 1.24 miles | 1798 | disused since 1865 |
| Braunston | Grand Union | 1887m | 1.17 miles | 1796 | |
| Crimson Hill | Chard | 1800m | 1.12 miles | 1841 | Chard Canal built to carry tub-boats 26ft x 6.5ft. Closed in 1868. |
| Foulridge | Leeds and Liverpool | 1500m | 0.93 miles | 1796 | |
The World's Longest Canal Tunnels (external link)
