The road distance from Ras Al Khaimah (UAE) to the Oman border (e.g., Al Wajajah crossing) is approximately:
To reach Muscat (Oman's capital), add another ~200 km (3+ hours total). Border crossing at Al Wajajah/Dibba is straightforward for GCC residents; other nationalities need an Omani visa (often available on arrival or via e-visa).