| Identifier: | GRYNS |
| NAS ID: | GRYNS |
| Name: | GRYNS |
| Fix Type: | Civilian |
| Fix Use: | |
| State: | MONTANA |
| ICAO Region: | K1 |
| Latitude: | 45-01-49.560N (45.030400) |
| Longitude: | 107-53-10.080W (-107.886100) |
| Magnetic Variance: | 9.7 E as of 9/30/2025 |
| High ARTCC Area: | ZLC |
| Low ARTCC Area: | ZLC |
| Published: | Yes |
| Charts: | |
| Pitch: | No |
| Catch: | No |
| SUA ATCAA: | No |
| CONTROLLER |
| ENROUTE HIGH |
| ENROUTE LOW |