Distance From River Highlands Ranch Airport to Roberts International Airport

The distance from River Highlands Ranch Airport () to Roberts International Airport (ROB) is 7042 miles or 11333 kilometers or 6115 nautical miles.

The distance shown below is direct flight distance between airports. Straight-line distance does not account for the surface between the two points. It is the distance a bird or airplane would travel between the two points when flying above the surface. The straight line distance is the direct route between two points, regardless of whether or not there are roads that connect them.

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How long does it take to travel from Grass Valley ( United States ) to Monrovia ( Liberia )?

A one-way nonstop (direct) flight between Grass Valley and Monrovia takes around 16 hours 11 minutes.

Estimated flight time from River Highlands Ranch Airport, Grass Valley, United States to Roberts International Airport, Monrovia, Liberia is 16 hours 11 minutes under avarage conditions. Your actual flying time may vary depending on wind direction/speed or weather conditions. This calculation does not include the departure and landing times of the aircraft. In addition, it does not cover the person identity check, ticket check-in and baggage collection times at the airport.

Travel Distance Between the Airports • - ROB

Kilometers		11333 km
Statute Miles		7042 miles
Nautical Miles		6115 nm
Avg. Time of Flight		16 hours 11 minutes

River Highlands Ranch Airport to Roberts International Airport Flight Route Map - to ROB Flight Path

Location of River Highlands Ranch Airport & Roberts International Airport is given below.
Click the map to view Grass Valley to Monrovia nonstop flight path and travel direction.

Click to see flight route on Google Map between Grass Valley, United States and Monrovia, Liberia. .

Nonstop flight route between Grass Valley, United States and Monrovia, Liberia.

Time Difference Between the Airports • - ROB

Time difference between Grass Valley (United States) and Monrovia (Liberia) is 7 Hours.
Monrovia time is 7 Hours ahead of Grass Valley.

Location	Local Time
Grass Valley (United States)	2026-06-18, 12:56:41 PDT
Monrovia (Liberia)	2026-06-18, 19:56:41 GMT

Why should you arrive 3 hours before international flight? Flyers who are traveling to an international destination should arrive at the airport earlier than domestic flyers. This is because international flights can have additional check-in requirements, like passport verification, that need to be completed before you receive your boarding pass.

Origin

River Highlands Ranch Airport ( / CN86) Grass Valley, United States

Destination

Roberts International Airport (ROB / GLRB) Monrovia, Liberia