Road tunnels ranked by total length in kilometres. Norway's Lærdal Tunnel is the world's longest road tunnel at 24.5 km, connecting the towns of Lærdal and Aurland through the mountains of western Norway. It was designed with three large mo...
About: World's Longest Road Tunnels
Overview of the data behind this chart
Road tunnels ranked by total length in kilometres. Norway's Lærdal Tunnel is the world's longest road tunnel at 24.5 km, connecting the towns of Lærdal and Aurland through the mountains of western Norway. It was designed with three large mountain caverns and special lighting to combat the psychological strain of driving through such a long enclosed space.
Key Findings
Auto-computed highlights from this dataset
🏆
Laerdal Tunnel (Norway) leads with 25 in All Time.
📊
Average value in All Time: 15 · median: 13.
↔️
Gap in All Time: Laerdal Tunnel (Norway) is 2.1× larger than Gudvanga Tunnel (Norway).
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World's Longest Road Tunnels
Data Insights
Numbers, trends & sources behind this chart⬡
Data Points
8
8 categories
·
1 year
↑
Top Value
25
Laerdal Tunnel (Norway)
Length (km) · All Time
◈
Metrics
1
Length (km)
◷
Period
All Time
Single year snapshot
Category Rankings
Ranked by All Time value · vs. All Time| # | Category | All Time | All Time | Change |
|---|---|---|---|---|
| 🥇 | Laerdal Tunnel (Norway) | 25 | 25 | +0% |
| 🥈 | Zhongnan Mountain Tunnel (China) | 18 | 18 | +0% |
| 🥉 | Gotthard Road Tunnel (Switzerland) | 17 | 17 | +0% |
| 4 | Arlberg Tunnel (Austria) | 14 | 14 | +0% |
| 5 | Hsuehshan Tunnel (Taiwan) | 13 | 13 | +0% |
| 6 | Frejus Road Tunnel (France/Italy) | 13 | 13 | +0% |
| 7 | Mont Blanc Tunnel (France/Italy) | 12 | 12 | +0% |
| 8 | Gudvanga Tunnel (Norway) | 11 | 11 | +0% |
Statistical Summary — All Time
25
Maximum
11
Minimum
15
Average
13
Median
What This Data Shows
Auto-generated trend summaries per category
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Full Data Table
8 records across 1 yearData Sources & References
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