• Our new ticketing site is now live! Using either this or the original site (both powered by TrainSplit) helps support the running of the forum with every ticket purchase! Find out more and ask any questions/give us feedback in this thread!

[Trivia]Shortest and Longest Circular Routes Possible

Status
Not open for further replies.

etr221

Established Member
Joined
10 Mar 2018
Messages
1,605
Coming out of the 'Above 50...' thread, idle speculation on my part: what are the shortest and longest possible circular routes - i.e. which will, starting from some point, bring you back to the same point, facing in the same direction, ready to go round again. For the longest, without passing over the same piece of line twice. Would there be a longer route if passing over the pieces of line twice, but in opposite directions. Either as a train, or a passenger...
 
Sponsor Post - registered members do not see these adverts; click here to register, or click here to log in
R

RailUK Forums

scrapy

Established Member
Joined
15 Dec 2008
Messages
2,313
Coming out of the 'Above 50...' thread, idle speculation on my part: what are the shortest and longest possible circular routes - i.e. which will, starting from some point, bring you back to the same point, facing in the same direction, ready to go round again. For the longest, without passing over the same piece of line twice. Would there be a longer route if passing over the pieces of line twice, but in opposite directions. Either as a train, or a passenger...
My guess is that Newcastle Central to Newcastle Central via King Edward VII and High Level bridges is shortest.
 
Last edited:

Farigiraf

Established Member
Joined
23 Jul 2023
Messages
1,202
Location
Bridge on the River Cam
A potential contender for longest (could be optimised further though) would be from Falkirk, going Falkirk Grahamston - Edinburgh - Newcastle - York - Leeds - Doncaster - Lincoln - Sleaford - Peterborough - Stevenage - Finsbury Park (via Hertford loop) - London St Pancras - London Bridge - East Croydon - Gatwick Airport - Hove - Chichester - Havant - Eastleigh - Romsey - Salisbury - Exeter St Davids - Bristol Temple Meads - Severn Tunnel Junction - Cwmbran (via disused by passenger services curve at Newport) - Shrewsbury - Crewe* - Wilmslow - Manchester Piccadilly - Bolton - Preston - Lancaster - Carlisle (via Cumbrian Coast) - Motherwell - Cumbernauld - Falkirk Grahamston
* can also go with a northern approach to Crewe via Wrexham and Chester, then going via Derby and Hope Valley (using curve just south of Dore & Totley) into Manchester
(in a nutshell)
 
Last edited:

Merseysider

Established Member
Fares Advisor
Joined
22 Jan 2014
Messages
5,628
Location
Birmingham
A potential contender for longest (could be optimised further though) would be from Croy, going Croy - Falkirk Grahamston - Edinburgh - Newcastle - York - Leeds - Doncaster - Lincoln - Sleaford - Peterborough - Stevenage - Finsbury Park (via Hertford loop) - London St Pancras - London Bridge - East Croydon - Gatwick Airport - Hove - Chichester - Havant - Eastleigh - Romsey - Salisbury - Exeter St Davids - Bristol Temple Meads - Severn Tunnel Junction - Cwmbran (via disused by passenger services curve at Newport) - Shrewsbury - Crewe* - Wilmslow - Manchester Piccadilly - Bolton - Preston - Lancaster - Carlisle (via Cumbrian Coast) - Motherwell - Cumbernauld - Croy
* can also go with a northern approach to Crewe via Wrexham and Chester, then going via Derby and Hope Valley (using curve just south of Dore & Totley) into Manchester
(in a nutshell)
Starting at eg Lancaster, a trip up the WCML to Glasgow then up to Inverness via Perth, down to Edinburgh via Aberdeen and Dundee, then ECML will add a fair bit of mileage.
 
Joined
3 Aug 2021
Messages
831
Location
Glasgow
A potential contender for longest (could be optimised further though) would be from Croy, going Croy - Falkirk Grahamston - Edinburgh - Newcastle - York - Leeds - Doncaster - Lincoln - Sleaford - Peterborough - Stevenage - Finsbury Park (via Hertford loop) - London St Pancras - London Bridge - East Croydon - Gatwick Airport - Hove - Chichester - Havant - Eastleigh - Romsey - Salisbury - Exeter St Davids - Bristol Temple Meads - Severn Tunnel Junction - Cwmbran (via disused by passenger services curve at Newport) - Shrewsbury - Crewe* - Wilmslow - Manchester Piccadilly - Bolton - Preston - Lancaster - Carlisle (via Cumbrian Coast) - Motherwell - Cumbernauld - Croy
* can also go with a northern approach to Crewe via Wrexham and Chester, then going via Derby and Hope Valley (using curve just south of Dore & Totley) into Manchester
(in a nutshell)

All very good until the end; how are you getting from Cumbernauld to Croy?

Perhaps, Motherwell - Coatbridge Central - Gartcosh - Springburn - Bishopbriggs - Croy.
 

Dr Hoo

Established Member
Joined
10 Nov 2015
Messages
5,693
Location
Hope Valley
Starting at eg Lancaster, a trip up the WCML to Glasgow then up to Inverness via Perth, down to Edinburgh via Aberdeen and Dundee, then ECML will add a fair bit of mileage.
You’re going to have to reverse at Inverness.
 

zwk500

Veteran Member
Joined
20 Jan 2020
Messages
18,622
Location
Northampton
London St Pancras - London Bridge - East Croydon - Gatwick Airport - Hove - Chichester - Havant - Eastleigh - Romsey - Salisbury - Exeter St Davids - Bristol Temple Meads
If you turn left at Redhill instead of carrying on to Gatwick, you can stretch out the journey to Havant slightly by running Tonbridge, *Ashford, Dover, Ramsgate, Rochester, Dartford, Lewisham, Demark Hill, Clapham Jn (Windsor side, and you can detour up the WLL if you want), Chertsey, Guildford.
* - Not sure if you might get a higher total mileage diving down to Hastings and then using an alternative route from Ashford back to Dartford.

If you want to avoid 'figure of 8' type routes, you'd turn on to the North kent out of the Thameslink core and then run Dartford - Ramsgate - Dover - Ashford - Redhill - East Croydon - Clapham Jn - WLL - Mitre Bridge - Kew - Chertsey.
 

waverley47

Member
Joined
17 Apr 2015
Messages
852
Either one of (these are mutually exclusive) going from Carlisle via Dumfries, Paisley and the City Union line to Croy, or from Motherwell via the Argyll line, Anniesland, Maryhill, Springburn, Gartcosh, Cumbernauld and Falkirk Grahamston will add on a decent chuck if mileage, but I'm unable to work out which is longer.
 

ABB125

Established Member
Joined
23 Jul 2016
Messages
4,346
Location
University of Birmingham
Definitely not the shortest, but two short loops in Birmingham are New Street-University-King's Norton north curve-Camp Hill-New Street, or New Street-Soho-Perry Barr-Aston-New Street.
I don't think it's possible to beat the Newcastle bridge loop though!

(As an aside, I'm struggling to think of many other examples who are fairly short. Glasgow Queen Street LL-Springburn-Anniesland-Queen Street LL works, Edinburgh south suburban line also works. After that, I've run out of ideas!)
 

Gaelan

Member
Joined
3 Apr 2023
Messages
1,010
Location
Edinburgh
(As an aside, I'm struggling to think of many other examples who are fairly short. Glasgow Queen Street LL-Springburn-Anniesland-Queen Street LL works, Edinburgh south suburban line also works. After that, I've run out of ideas!)
Not sure if it's "fairly short", but it's possible to go around the Fife Circle forever (using the curve from Dalgety Bay to Rosyth, bypassing Inverkeithing).
 

signed

Established Member
Joined
13 May 2024
Messages
2,387
Location
ROI
One of the longest could be surely :

Peterborough down the ECML - Harringray curve - Crouch Hill - Willesden - WCML

For bi-modes :

Gretna Green - Mauchline Branch - Newton on Ayr - through to the Clysdale Line - North Clyde Line - Edinburgh Park - Suburban Line - Newcraighall - ECML through the Millerhill yard - Peterborough
 

Bevan Price

Established Member
Joined
22 Apr 2010
Messages
8,341
A potential contender for longest (could be optimised further though) would be from Falkirk, going Falkirk Grahamston - Edinburgh - Newcastle - York - Leeds - Doncaster - Lincoln - Sleaford - Peterborough - Stevenage - Finsbury Park (via Hertford loop) - London St Pancras - London Bridge - East Croydon - Gatwick Airport - Hove - Chichester - Havant - Eastleigh - Romsey - Salisbury - Exeter St Davids - Bristol Temple Meads - Severn Tunnel Junction - Cwmbran (via disused by passenger services curve at Newport) - Shrewsbury - Crewe* - Wilmslow - Manchester Piccadilly - Bolton - Preston - Lancaster - Carlisle (via Cumbrian Coast) - Motherwell - Cumbernauld - Falkirk Grahamston
* can also go with a northern approach to Crewe via Wrexham and Chester, then going via Derby and Hope Valley (using curve just south of Dore & Totley) into Manchester
(in a nutshell)
You could extend that even further:
Shrewsbury (Abbey Foregate curve) - Wolverhampton - Birmingham New Street - Vauxhall - Bescot - Walsall - Rugeley - Stafford - Crewe, then as above.
 

wilbers

Member
Joined
10 Mar 2022
Messages
512
Location
Penrith
My guess is that Newcastle Central to Newcastle Central via King Edward VII and High Level bridges is shortest.

I very nearly did that last week. I was on a train from Carlisle to Newcastle, and rather than going into Newcastle on the King Edward VII bridge like it has every other time I've been on it, it got to the junction at the south end of that bridge and went into the station from the east instead, going across the High Level Bridge. Train on the way back went the usual way, and as I also went on the metro to Gateshead its the one and only time I've been across all 3 Newcastle rail bridges on the same day.
 

etr221

Established Member
Joined
10 Mar 2018
Messages
1,605
A potential contender for longest (could be optimised further though) would be from Falkirk, going Falkirk Grahamston - Edinburgh - Newcastle - York - Leeds - Doncaster - Lincoln - Sleaford - Peterborough - Stevenage - Finsbury Park (via Hertford loop) - London St Pancras - London Bridge - East Croydon - Gatwick Airport - Hove - Chichester - Havant - Eastleigh - Romsey - Salisbury - Exeter St Davids - Bristol Temple Meads - Severn Tunnel Junction - Cwmbran (via disused by passenger services curve at Newport)
Can you do east to north onto the Central Wales Line at Pontarddulais, rather than going via Cwmbran?
- Shrewsbury - Crewe* - Wilmslow - Manchester Piccadilly - Bolton - Preston - Lancaster - Carlisle (via Cumbrian Coast) - Motherwell - Cumbernauld - Falkirk Grahamston
* can also go with a northern approach to Crewe via Wrexham and Chester, then going via Derby and Hope Valley (using curve just south of Dore & Totley) into Manchester
(in a nutshell)
... or from Northern approach to Crewe, to Birmingham then through Worcester - Oxford - Didcot - not quite Westbury - Reading - Staines - Clapham Jn - West London Line - Northampton - Grand Junction - Walsall - Water Orton - Leicester - Derby - Stoke - Stockport - Guide Bridge - Hope Valley - Sheffield - Huddersfield - Hebden Bridge - Rochdale - Manchester Vic to Bolton ...

Or does not going via Leeds on your way south give you a longer option? Or is there mileage in, from Leeds keping vaguely westwards across the Penines and back, before heading South? What would that preclude later?

From Carlisle, can you gain anything by taking the G&SW, then taking loops round south and west of Glasgow onto the E&G? Not my area... Or going through Fife, starting at Stirling rather than Falkirk?
 
Last edited:

61653 HTAFC

Veteran Member
Joined
18 Dec 2012
Messages
19,363
Location
Yorkshire
My guess is that Newcastle Central to Newcastle Central via King Edward VII and High Level bridges is shortest.
My only objection to that one is that as you don't pass through any other stations en-route, such a "service" would be pointless from a passenger perspective. Though the OP did not specify that the service had to be useful, that's just how I interpreted the topic. With that additional constraint, I suspect the shortest would be those in post #9 courtesy of @ABB125
 

Magdalia

Established Member
Joined
1 Jan 2022
Messages
7,405
Location
The Fens
Peterborough - Stevenage - Finsbury Park (via Hertford loop) - London St Pancras - London Bridge - East Croydon
How could someone located at a bridge on the River Cam neglect the Fens!?

Try Peterborough-Ely-Ipswich-Stratford-Willesden Junction-Shepherds Bush-Clapham Junction-East Croydon.
 

Farigiraf

Established Member
Joined
23 Jul 2023
Messages
1,202
Location
Bridge on the River Cam
Can you do east to north onto the Central Wales Line at Pontarddulais, rather than going via Cwmbran?
Is the Swansea District Line - Heart of Wales line curve still functional? I don't see why any train would really use it (unless specials from Cardiff to Builth Road take that route) so it could be decommissioned...
From Carlisle, can you gain anything by taking the G&SW, then taking loops round south and west of Glasgow onto the E&G? Not my area... Or going through Fife, starting at Stirling rather than Falkirk?
Wasn't aware of a route from the lines west/southwest of Glasgow Central onto the Argyle/Cumbernauld, but I think it's possible to go on a through line from Crossmyloof to Bellgrove, then Springburn, then Falkirk. There's no South to East line at Inverness nor a South to West route at Dundee/Invergowrie, but going via the Alloa-Dunfermline link is an option.
How could someone located at a bridge on the River Cam neglect the Fens!?

Try Peterborough-Ely-Ipswich-Stratford-Willesden Junction-Shepherds Bush-Clapham Junction-East Croydon.
insert 'facepalm' emoji :D



For shortest, Clapham Junction-Wandsworth Road-Brixton-Herne Hill-Tulse Hill-Streatham Hill-Clapham Junction is in for a shot, among other short London routes
 
Last edited:

APT618S

Member
Joined
7 Dec 2018
Messages
510
My guess is that Newcastle Central to Newcastle Central via King Edward VII and High Level bridges is shortest.
I very nearly did that last week. I was on a train from Carlisle to Newcastle, and rather than going into Newcastle on the King Edward VII bridge like it has every other time I've been on it, it got to the junction at the south end of that bridge and went into the station from the east instead, going across the High Level Bridge. Train on the way back went the usual way, and as I also went on the metro to Gateshead its the one and only time I've been across all 3 Newcastle rail bridges on the same day.
You can do the loop on a single train but you do not start the loop at the station but at King Edward Bridge E Jn.
1N33 2000 Kings's Cross to Sunderland on a weekday is booked to enter Newcastle from the High Level Bridge and leave over the King Edward Bridge so you go past the site of Gateshead (GD) TMD twice.
Link to today's 1N33:
 
Status
Not open for further replies.

Top