River Severn, one of the longest uk rivers

Longest UK Rivers

24 Longest UK Rivers: Denial ain’t just a river in Egypt! – Mark Twain wittily commented.

There’s also no denying even the longest UK rivers don’t exactly cut the mustard when compared to the truly great rivers in the world. But what they lack in length they make up for in fame – the Thames and the Mersey, for example, punch well above their weight although none of the longest UK rivers make it into the list of the top 20 longest rivers in Europe.

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Longest UK RiversLength (miles)Length (km)CountryRiver SourceRiver MouthFlows Through Cities#
Severn220354Wales and EnglandPlynlimonSevern EstuaryBristol, Gloucester, Shrewsbury, Worcester1
Thames215346EnglandThames HeadNorth SeaDartford, Gravesend, London, Maidenhead, Oxford, Reading, Southend, Windsor2
Trent185297EnglandBiddulph MoorTrent Falls, HumberBurton-upon-Trent, Gainsborough, Newark-on-Trent,3
Great Ouse
East Anglia
143230EnglandSyreshamThe WashBedford, Buckingham, Ely, Huntingdon, King’s Lynn, Milton Keynes, Newport Pagnell4
Wye134215Wales and EnglandPlynlimonSevern EstuaryBuilth, Wells, Chepstow, Hay-on-Wye, Hereford, Rhayader5
Ure/Ouse
Yorkshire
129208EnglandHigh Abbotsidesee Gt. OuseMickley, Ripon, Wensley6
Tay119192ScotlandAllt Coire LaoighFirth of TayAberfeldy, Dunkeld, Kenmore, Perth7
Spey107172ScotlandLoch SpeyMoray FirthAviemore, Kingussie, Newtonmore8
Clyde106172ScotlandLowther HillsFirth of ClydeBothwell, Glasgow, Greenock, Lanark9
Tweed96155Border of ScotlandTweed’s WellNorth SeaBerwick-upon-Tweed, Birgham, Carham10
Avon
Warwickshire
96154EnglandNasebySevern EstuaryEvesham, Pershore, Rugby, Stratford-upon-Avon, Welford, Wolston, Warwick,11
Nene92148EnglandArbury HillThe WashBenwick, Cogenhoe, Northampton, Sutton Bridge, Wellingborough, Wisbech12
Eden
Cumbria
90145EnglandHigh / Hugh SeatSolway FirthCarlisle, Kirkby, Mallerstang, Penrith, Stephen, Wetheral,13
Dee
Aberdeenshire
87140ScotlandCairngormsNorth SeaAberdeen, Aboyne, Ballater, Banchory, Braemar14
Witham82132EnglandSouth WithamThe Wash, East MidlandsBoston, Grantham15
Teme81130EnglandDolforRiver SevernKnighton, Ludlow, Powys, Tenbury, Wells, Worcester16
Don
Aberdeenshire
80129ScotlandLadder HillsNorth Sea, Bridge of DonAberdeen, Alford, Dyce, Inverurie, Kintore, Kemnay17
Bann76122Northern IrelandMourne MountainsAtlantic OceanBannfoot, Castlerock, Toome18
Ribble75120EnglandCam / Gayle BeckIrish SeaClitheroe, Preston, Ribchester, Settle, Southport, Walton-le-Dale, Wigan19
Avon, Bristol75120EnglandActon TurvilleSevern EstuaryBath, Bristol, Bradford on Avon, Chippenham20
Tyne73118EnglandSouth TyneTynemouthBellingham, Gateshead, Hebburn, Hexham, Jarrow, Newcastle upon Tyne21
Derwent72115EnglandFylingdales MoorBarmby BarrageLang, Dale, Norton-on-Derwent, West/East, Ayton, Yorkshire Moors22
Aire71114EnglandMalham TarnRiver OuseAire Head, Castleford, Bingley, Leeds, Shipley, Skipton,23
Tees70113EnglandCross FellNorth SeaDarlington, Middlesbrough, Middleton-in-Teesdale, Stockton-on-Tees, Teesside, Yarm24

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