| Identifier: | MARLS |
| NAS ID: | MARLS |
| Name: | MARLS |
| Fix Type: | Civilian |
| Fix Use: | |
| State: | MONTANA |
| ICAO Region: | K1 |
| Latitude: | 45-50-19.950N (45.838900) |
| Longitude: | 105-51-05.510W (-105.851500) |
| Magnetic Variance: | 8.7 E as of 9/30/2025 |
| High ARTCC Area: | ZLC |
| Low ARTCC Area: | ZLC |
| Published: | Yes |
| Charts: | |
| Pitch: | No |
| Catch: | No |
| SUA ATCAA: | Yes |
| ENROUTE HIGH |