# Distance from Fort Cavazos (Killeen) (GRK) to Sofia (SOF)

> 9,853 km · estimated flight time 13h · Ultra-long-haul route.

## Summary

- **Distance**: 9,853 km / 6,123 mi / 5,320 nm
- **Estimated flight time**: 13h
- **Heading**: 39° (northeast)
- **Return heading**: 313° (northwest)
- **Classification**: Ultra-long-haul
- **Type**: International (United States) → Bulgaria
- **Intercontinental**: North America → Europe
- **Time difference**: +8h (When it's 02:52 in Fort Cavazos (Killeen), it's 10:52 in Sofia)
- **Elevation difference**: 727 ft (SOF is higher than GRK)

## Airports

### [Robert Gray Army Air Field (GRK)](https://www.flightduration.online/airport/grk-fort-cavazos-killeen-robert-gray-army-air-field/1ef266df-1eef-6eaa-a920-06bb2780ed98)

- City: Fort Cavazos (Killeen), United States
- ICAO: KGRK
- Timezone: America/Chicago
- Coordinates: 31.100000, -97.800000
- Elevation: 1,015 ft

### [Sofia Airport (SOF)](https://www.flightduration.online/airport/sof-sofia-sofia-airport/1ef266df-436b-611c-bff1-06bb2780ed98)

- City: Sofia, Bulgaria
- ICAO: LBSF
- Timezone: Europe/Sofia
- Coordinates: 42.700000, 23.410000
- Elevation: 1,742 ft

## Route notes

This is an ultra-long-haul route, one of the longest in aviation. It requires wide-body aircraft with extended range capability such as the Airbus A350-900ULR or Boeing 777-200LR. Passengers should prepare for an extended flight with multiple meal services.

Time-zone information: When it's 02:52 in Fort Cavazos (Killeen), it's 10:52 in Sofia.
With a 8-hour time difference, expect significant jet lag.

## Related

- [Robert Gray Army Air Field (GRK)](https://www.flightduration.online/airport/grk-fort-cavazos-killeen-robert-gray-army-air-field/1ef266df-1eef-6eaa-a920-06bb2780ed98)
- [Sofia Airport (SOF)](https://www.flightduration.online/airport/sof-sofia-sofia-airport/1ef266df-436b-611c-bff1-06bb2780ed98)
- [Flight duration calculator](/#calculator)