London's Shortest Cycle Paths
(Yes, Including 0 Meters)

The question: What are the shortest cycle paths in London?

The answer: Depends whether you want "official named routes you can ride" or "technically mapped cycle infrastructure." Because one of those categories includes a 0-meter cycle path.

🏆 The Winners

🔍 The Investigation

I started with Transport for London's official Cycle Routes GeoJSON dataset. This contains all the designated Cycleways, Cycle Superhighways, and other official routes with measured lengths.

A quick query revealed the bottom of the barrel:

Cycleway 32 at 173 meters is basically one city block. You could walk it faster than unlocking a Santander bike. But hey, it's an official route with signage and everything.

For contrast, the longest route is an unnamed Cycleway (C) at 23.2 km — a proper cross-London journey.

🤔 But What About Really, Really Short Paths?

TfL's data is for designated routes. But what about individual bits of cycle infrastructure? Painted bike lanes, contraflow sections, junction bike boxes — the tiny stuff?

Enter OpenStreetMap.

I queried the Overpass API for all cycleway tagged segments in the City of London and calculated their lengths from GPS coordinates.

The results were... beautiful:

What Are These?

These aren't mapping errors — they're real infrastructure, just absurdly short:

• Contraflow cycle lanes on one-way streets (painted markings at the entrance)
• Bike symbols (sharrows) painted on the road surface
• Junction bike boxes (Advanced Stop Lines)
• Very short painted sections connecting other infrastructure

For example, Garlick Hill (OSM 975142227) is tagged as cycleway: opposite — a contraflow lane on a one-way residential street. The mapped segment is literally 1 meter long, probably just the painted entry point.

And the 0-meter path? Most likely a duplicate node or a point-based feature (like a bike symbol) that got tagged as a way in OSM. It exists in the data, occupies zero space, and is technically cycle infrastructure. Philosophy students, take note.

🚴‍♂️ How to "Complete" London's Shortest Cycle Path

If you want to complete the 0-meter cycle path:

1. Stand in the right spot in the City of London
2. Congratulations, you did it

For the 1-meter paths, you'll need to pedal approximately... one pedal stroke. Maybe half.

If you prefer actual rideable routes, Cycleway 32 at 173 meters remains the official speed-run champion. Still barely long enough to get up to speed before braking.

📊 The Method

TfL Data:

curl -sL "https://gis-tfl.opendata.arcgis.com/datasets/TfL::cycle-routes.geojson" \
  | jq -r '.features[] | "\(.properties.Shape__Length) meters | \(.properties.Route_Name)"' \
  | sort -n | head -10

OpenStreetMap Data (via Overpass API):

[out:json][timeout:25];
area["name"="City of London"]->.searchArea;
(
  way["cycleway"](area.searchArea);
  way["highway"="cycleway"](area.searchArea);
);
out body geom;

Then calculated approximate segment lengths from GPS coordinates and sorted.

🎯 Takeaways

• London's shortest official cycle route: Cycleway 32 (173m)
• London's shortest mapped cycle infrastructure: 0 meters (yes, really)
• Most 1-meter segments: Contraflow lanes, bike symbols, and painted markings
• Why this matters: It doesn't, but it's delightful

If nothing else, this proves that open data + curiosity = ridiculous insights. And now you know: if you ever want to claim you "rode a London cycleway," the bar has never been lower. Literally.

Data sources: TfL GIS Open Data Hub, OpenStreetMap via Overpass API