From Trethewell, Cornwall to nearby cities in Cornwall
- Falmouth (3.55 mi)
- Truro (6.05 mi)
- Penzance (23.99 mi)
- Bodmin (23.76 mi)
- Belowda (17.74 mi)
- Biscovey (17.14 mi)
- Billacott (42.51 mi)
- Bilberry (18.33 mi)
- Bethel (15.68 mi)
- Bethany (32.69 mi)
- Berriowbridge (35.93 mi)
- Beeny (38.88 mi)
- Berepper (14.48 mi)
- Bennacott (44.66 mi)
- Bishops Quay (10.16 mi)
- Bissoe (6.24 mi)
- Bissom (3.99 mi)
- Bodieve (25.12 mi)
- Bodelva (17.1 mi)
- Bodellick (24.39 mi)
- Boconnoc (23.87 mi)
- Bocaddon (24.42 mi)
- Blunts (34.7 mi)
- Blowinghouse (11.18 mi)
- Blisland (28.22 mi)
- Blackwater (9.91 mi)
- Black Cross (16.01 mi)
- Bealsmill (40.08 mi)
- Bealbury (37.51 mi)
- Bathpool (36.12 mi)
- Badgall (39.48 mi)
- Ashton (16.14 mi)
- Ashton (38.61 mi)
- Antron (5.91 mi)
- Antony Passage (37.19 mi)
- Antony (35.75 mi)
- Angarrick (3.91 mi)
- Amalveor (22.93 mi)
- Amalebra (22.29 mi)
- Alverton (24.59 mi)
- Zoar (11.39 mi)
- Bakesdown (47.03 mi)
- Barripper (13.73 mi)
- Barkla Shop (11.91 mi)
- Bareppa (5.71 mi)
- Barcelona (24.93 mi)
- Banns Vale (11.76 mi)
- Banns (12.3 mi)
- Bangors (45.26 mi)
- Balwest (16.42 mi)
- Balnoon (21.74 mi)
- Baldhu (7.01 mi)
From Trethewell, Cornwall to all cities in Cornwall starting with letter A
- Addington, Cornwall
- Albaston, Cornwall
- Allet, Cornwall
- Altarnun, Cornwall
- Alverton, Cornwall
- Amalebra, Cornwall
- Amalveor, Cornwall
- Angarrack, Cornwall
- Angarrick, Cornwall
- Antony, Cornwall
- Antony Passage, Cornwall
- Antron, Cornwall
- Ashton, Cornwall
- Ashton, Cornwall
From Trethewell, Cornwall to Cities in other Counties
- Bedfordshire
- Berkshire
- Bristol
- Buckinghamshire
- Cambridgeshire
- Cheshire
- Cornwall
- Cumbria
- Derbyshire
- Devon
- Dorset
- Durham
- East Riding of Yorkshire
- East Sussex
- Essex
- Gloucestershire
- Greater London
- Greater Manchester
- Hampshire
- Herefordshire
- Hertfordshire
- Isle of Wight
- Kent
- Lancashire
- Leicestershire
- Lincolnshire
- Merseyside
- Norfolk
- North Yorkshire
- Northamptonshire
- Northumberland
- Nottinghamshire
- Oxfordshire
- Rutland
- Shropshire
- Somerset
- South Yorkshire
- Staffordshire
- Suffolk
- Surrey
- Tyne & Wear
- Warwickshire
- West Midlands
- West Sussex
- West Yorkshire
- Wiltshire
- Worcestershire
- Isle of Man
- County Antrim
- County Armagh
- County Derry Londonderry
- County Down
- County Fermanagh
- County Tyrone
- Aberdeenshire
- Angus
- Argyll and Bute
- Ayrshire and Arran
- Banffshire
- Berwickshire
- Caithness
- City of Aberdeen
- City of Dundee
- City of Edinburgh
- City of Glasgow
- Clackmannan
- Dumfries
- Dunbartonshire
- East Lothian
- Fife
- Inverness
- Kincardineshire
- Lanarkshire
- Midlothian
- Moray
- Nairn
- Orkney
- Perth and Kinross
- Renfrewshire
- Ross and Cromarty
- Roxburgh Ettrick and Lauderdale
- Shetland
- Stirling and Falkirk
- Sutherland
- The Stewartry of Kirkcudbright
- Tweeddale
- West Lothian
- Western Isles
- Wigtown
- Clwyd
- Dyfed
- Gwent
- Gwynedd
- Mid Glamorgan
- Powys
- South Glamorgan
- West Glamorgan