The train service between Naima and Oued Metlili is primarily operated by the Moroccan ONCF trains. The trip typically utilizes the Inter-City train service, which offers a comfortable travel experience with both First and Second class options. The trains on this route generally travel at speeds up to 120 km/h (75 mph), allowing for an efficient journey time of approximately 2 to 3 hours, depending on the specific train and schedule.
The Inter-City trains feature amenities like air-conditioning and onboard refreshments, making the ride pleasant. While this service does not reach high-speed capabilities, it provides a reliable connection between these two destinations, with scenic views along the way. Although high-speed trains, akin to some infrastructures in Europe and Asia, are not available on this particular segment, the Inter-City service adequately serves the regional travel demand between Naima and Oued Metlili.