austrailia
The temple that is 310 miles southeast of Giza on the east banks of the Nile is the Temple of Karnak in Luxor, Egypt. It is one of the largest temple complexes in Egypt and was dedicated to the god Amun.
310 miles
There's no city there. That point is located in the interior of Tasmania, about 63 miles north-northwest of the center of Hobat, and about 310 miles south- southeast of the center of Melbin.
310 nautical miles is equivalent to approximately 356.45 miles.
About 310.
310 kilometers=192.62507 miles
310 miles=1,636,800 feet
310 miles = 798896.64 meters
310 km = 192.625 miles (rounded)
The whole answer to that one hangs on what you consider "approximantle". There's no city at that point, capital or otherwise. The point is well out in the Atlantic Ocean, about 310 miles west-northwest of Hamilton, Bermuda, 525 miles southeast of Richmond VA, 560 miles southeast of Washington DC, and 850 miles east-northeast of Tallahassee FL. Those are the only capital cities anywhere in the neighborhood. I would not want to be expected to swim from that point to any of them.
310 miles = 798896.64 meters
Time = Distance/Speed = 310 miles/60 miles per hour = 310 minutes = 5 hours and 10 minutes.