In Transportation
- The 186 is a legendary 6-cylinder Holden engine (L6), that was first used in the Holden HR series
- London Buses route 186
- The NOAAS Nancy Foster, a National Oceanic and Atmospheric Administration research vessel, is 186 feet long
- Cosmos 186 and Cosmos 188 incorporated a Soyuz programme descent module for landing scientific instruments and test objects
- Highways and routes numbered 186 include:
- Alabama State Route 186
- Arizona State Route 186
- Arkansas Highway 186
- California State Route 186
- Connecticut Route 186 in Connecticut and Massachusetts
- Maine State Route 186
- M-186, Michigan
- New York State Route 186
- Erie County, NY Route 186
- North Carolina Highway 186
- Ohio State Route 186
- Texas State Highway 186
- Utah State Route 186
- Virginia State Route 186
- Wisconsin Highway 186
- Route 186 connects Gōtsu, Shimane and Ōtake, Hiroshima, Japan
- Kangar Bypass, Federal Route 186, Kangar, Perlis, Malaysia
- Mexican Federal Highway 186
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