Just under 30 miles including total urbanised area of greater London
Width (longest distance, east to west): 357 miles
35km
About 25 miles
42,000
Tennessee's width (north to south) is 120 miles. Its length (east to west) is 440 miles.
The Central Line of the London Underground runs West-East from Ruislip (16.5 miles west of central London) to Epping (20 miles North-East). The West-East branch of the District Line runs from Richmond (10 miles west of central London) to Upminster (20 miles East). The North-South branch runs from Edgeware Road (8 miles North) to Wimbledon (8.5 miles South).
Alaskas width is 808 miles and the length is 1,479 miles.
It is 380 miles.
Illinois is 390 miles long north to south and 210 miles wide east to west.
Horizontal Width of Ukraine is 784.93 miles (1263.22 km) from Uzhhorod east to Luhans'k
3,000 miles due east of London would be in upper north-west Quebec, Canada on the east coast of James Bay.
Worthing is about 65 miles away from Centrel London