# Distance from Colombo (CMB) to Grand Marais (GRM)

> 13,823 km · estimated flight time 17h · Ultra-long-haul route.

## Summary

- **Distance**: 13,823 km / 8,589 mi / 7,464 nm
- **Estimated flight time**: 17h
- **Heading**: 352° (north)
- **Return heading**: 12° (north northeast)
- **Classification**: Ultra-long-haul
- **Type**: International (Sri Lanka) → United States
- **Intercontinental**: Asia → North America
- **Time difference**: -10.5h (When it's 09:47 in Colombo, it's 23:17 in Grand Marais)
- **Elevation difference**: 1,773 ft (GRM is higher than CMB)

## Airports

### [Bandaranaike International Apt Colombo Airport (CMB)](https://www.flightduration.online/airport/cmb-colombo-bandaranaike-international-apt-colombo-airport/1ef266df-ef5c-65b6-9127-06bb2780ed98)

- City: Colombo, Sri Lanka
- ICAO: VCBI
- Timezone: Asia/Colombo
- Coordinates: 7.180000, 79.880000
- Elevation: 30 ft

### [Grand Marais/Cook County Airport (GRM)](https://www.flightduration.online/airport/grm-grand-marais-grand-maraiscook-county-airport/1ef266df-1404-6842-beaf-06bb2780ed98)

- City: Grand Marais, United States
- ICAO: KCKC
- Timezone: America/Chicago
- Coordinates: 47.840000, -90.380000
- Elevation: 1,803 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 09:47 in Colombo, it's 23:17 in Grand Marais.
With a 10.5-hour time difference, expect significant jet lag.

## Related

- [Bandaranaike International Apt Colombo Airport (CMB)](https://www.flightduration.online/airport/cmb-colombo-bandaranaike-international-apt-colombo-airport/1ef266df-ef5c-65b6-9127-06bb2780ed98)
- [Grand Marais/Cook County Airport (GRM)](https://www.flightduration.online/airport/grm-grand-marais-grand-maraiscook-county-airport/1ef266df-1404-6842-beaf-06bb2780ed98)
- [Flight duration calculator](/#calculator)