s => s
.Aggregations(a => a
    .GeoDistance("rings_around_amsterdam", g => g
        .Field(p => p.Location)
        .Origin(52.376, 4.894)
        .Ranges(
            r => r.To(100),
            r => r.From(100).To(300),
            r => r.From(300)
        )
    )
)

new SearchRequest<Project>
{
    Aggregations = new GeoDistanceAggregation("rings_around_amsterdam")
    {
        Field = Field((Project p) => p.Location),
        Origin = "52.376, 4.894",
        Ranges = new List<Nest.Range>
        {
            new Nest.Range { To = 100 },
            new Nest.Range { From = 100, To = 300 },
            new Nest.Range { From = 300 }
        }
    }
}

{
  "aggs": {
    "rings_around_amsterdam": {
      "geo_distance": {
        "field": "location",
        "origin": {
          "lat": 52.376,
          "lon": 4.894
        },
        "ranges": [
          {
            "to": 100.0
          },
          {
            "from": 100.0,
            "to": 300.0
          },
          {
            "from": 300.0
          }
        ]
      }
    }
  }
}

response.IsValid.Should().BeTrue();
var ringsAroundAmsterdam = response.Aggs.GeoDistance("rings_around_amsterdam");
ringsAroundAmsterdam.Should().NotBeNull();
ringsAroundAmsterdam.Buckets.Where(r => r.Key == "*-100.0").FirstOrDefault().Should().NotBeNull();
ringsAroundAmsterdam.Buckets.Where(r => r.Key == "100.0-300.0").FirstOrDefault().Should().NotBeNull();
ringsAroundAmsterdam.Buckets.Where(r => r.Key == "300.0-*").FirstOrDefault().Should().NotBeNull();