> ## Documentation Index
> Fetch the complete documentation index at: https://docs.resq.software/llms.txt
> Use this file to discover all available pages before exploring further.

# ResQ.Core.Location.DistanceTo(ResQ.Core.Location)

### [ResQ.Core](./ResQ.Core.md "ResQ.Core").[Location](./ResQ.Core.Location.md "ResQ.Core.Location")

## Location.DistanceTo(Location) Method

Calculates the great-circle distance to another location using the Haversine formula.

```csharp theme={null}
public double DistanceTo(ResQ.Core.Location other);
```

#### Parameters

<a name="ResQ.Core.Location.DistanceTo(ResQ.Core.Location).other" />

`other` [Location](./ResQ.Core.Location.md "ResQ.Core.Location")

The target location to calculate distance to.

#### Returns

[System.Double](https://learn.microsoft.com/en-us/dotnet/api/system.double "System.Double")\
The distance in kilometers between this location and the target.

### Example

```csharp theme={null}
var point1 = new Location(37.7749, -122.4194); // San Francisco
var point2 = new Location(34.0522, -118.2437); // Los Angeles

double distance = point1.DistanceTo(point2);
Console.WriteLine($"Distance: {distance:F2} km"); // Distance: 559.12 km
```

### Remarks

This method uses the Haversine formula to calculate the shortest distance over
the earth's surface, giving an "as-the-crow-flies" distance between the points
(ignoring any hills, valleys, or other obstacles). The calculation assumes
a spherical earth with a radius of 6,371 kilometers.