RouteHeathrow Airport Link Line
SectionHeathrow Tunnel Jn to Heathrow Airport Terminal 4
RemarksBritish Airports Authority (BAA) owned
ELR MapsAtlas , Interactive , what3words
Area MapsAirport Jn , Heathrow Airport
Extent19.857km to 26.860km  •  4.351 miles  •  7.002 km
Unitsℹ️ Kilometre-based ELR
Measured6.868 km (Δ -135m)
⚠️ Large variation between reported and measured extents
GroupingHLL , HLL1 , HLL2
NeighboursHLL , HLL2
NR RegionWales & Western
Quail Map 3 — Western & WalesTRACKmaps Book 3 — Western & Wales

 

🏢 Administrative Area

MileageCountryAdministrative Area
19.857km to 26.860kmEnglandHillingdon

 

📍 Nearest Place and District

MileageNearest PlaceDistrict / CountyDistance
19.857km to 20.247kmWest DraytonGreater London - Hillingdon1119m - 1187m
20.248km to 22.379kmSipsonGreater London - Hillingdon358m - 1153m
22.380km to 23.184kmHarlingtonGreater London - Hillingdon1169m - 1814m
23.185km to 23.707kmSipsonGreater London - Hillingdon1831m - 2077m
23.708km to 26.181kmWest BedfontSurrey - Spelthorne644m - 2069m
26.182km to 26.860kmEast BedfontGreater London - Hounslow1069m - 1265m

 

🏷️ Positional Accuracy Statistics

PropertyCountMinMaxMeanMedianStd Dev
Linear Accuracy17-101m7m-8m-0m25m
Normalised Quarter Miles17291y446y422y440y49y
Calibration Segment Length1756y547y450y547y188y