| Identifier: | GRUNI |
| NAS ID: | GRUNI |
| Name: | GRUNI |
| Fix Type: | Civilian |
| Fix Use: | |
| State: | MICHIGAN |
| ICAO Region: | K5 |
| Latitude: | 43-37-04.060N (43.617800) |
| Longitude: | 084-27-50.900W (-84.464100) |
| Magnetic Variance: | 6.7 W as of 9/30/2025 |
| High ARTCC Area: | ZOB |
| Low ARTCC Area: | ZOB |
| Published: | Yes |
| Charts: | |
| Pitch: | No |
| Catch: | No |
| SUA ATCAA: | No |
| IAP |