The Dadès Gorge is the most visually dramatic road section on the cycling route south from Marrakech to the Sahara. It runs through the southern face of the High Atlas, following the Dadès River through a narrow canyon whose walls rise several hundred metres above the road. The gorge is part of the Route des Kasbahs, the informal name for the valley road that links a series of mud-brick fortresses and palm groves between Ouarzazate in the west and Tinerhir in the east. By bicycle this stretch is among the most rewarding in Morocco: the gradient is mild, the surface is good, and the landscape changes almost continuously.

From Ouarzazate the Route des Kasbahs runs east along the Dadès Valley, a broad river valley at around 1,100 metres elevation. The valley is planted with date palms, rose gardens, and cereal crops, and the road passes through a sequence of kasbahs, most of them partially inhabited and some recently restored. The cycling is easy for the first forty kilometres east of Ouarzazate, flat to gently rolling, with a reliable road surface and regular villages. This is the recovery section after the Tizi n'Tichka descent and it feels that way: the legs open, the altitude is comfortable, and the views are wide and warm.

The gorge itself begins just past the village of Boumalne Dadès, where the valley narrows and the road enters the canyon. For the next twenty kilometres the walls close in progressively. In the tightest sections the rock faces are almost vertical, the river is audible below, and the road cuts through several short tunnels. The gradient is still mild, this is not a climb but a valley road that rises gently as it follows the river upstream, but the confined space and the changing light through the canyon make it feel more demanding than the numbers suggest. Early morning is the best time to ride this section, with the canyon walls in shadow and the first direct sunlight reaching the river about two hours after dawn.

The village of Aït Oudinar, roughly fifteen kilometres into the gorge, is the main settlement and a good point to stop for tea or food. The café options are simple but reliable, and this is the last regularly stocked stop before the gorge narrows further in the upper section. Beyond Aït Oudinar the road becomes progressively rougher and the traffic drops sharply. The final five kilometres before the gorge ends at the Cirque de Jaffar are on a surface that a road bike can handle but that a gravel setup rides more comfortably. Most riders turn at Aït Oudinar or shortly beyond, covering a return section before rejoining the main valley road.

The road continues east from Boumalne toward Tinerhir and the Todra Gorge, which is a short and dramatic vertical canyon. The Todra is narrower than the Dadès and more famous with tourists, but by bicycle it is interesting rather than long, the canyon is only a few kilometres deep before the road enters a wide valley again. Most cycling routes through this area treat the Dadès and Todra together as a single day: east from Ouarzazate to Boumalne, into the Dadès Gorge, return to the valley road, east to Tinerhir, and into the Todra for a late afternoon finish. The total distance is around 100 kilometres with modest elevation change.

Accommodation in the Dadès Valley is varied and generally reliable. The larger villages have hotels at most price points, and the gorge itself has several small guesthouses built into the canyon walls. Many are operated by Berber families and offer a simple formula of a room, a meal, and access to hot water at the end of the day. Booking in advance is advisable in March and April when the valley attracts both cyclists and hikers. In October and November the accommodation is less pressured but the days are shorter, which matters for the longer valley stages.

Connecting the Dadès section to the Sahara approach requires continuing south and east through the Draa Valley toward M'hamid el Ghizlane. From Tinerhir this is a full day of riding, approximately 90 to 100 kilometres with minimal elevation change but steadily increasing desert character. The vegetation becomes more sparse, the kasbahs more isolated, and the road surface more variable as the paved network gives way to occasional piste. By the time M'hamid comes into view, the Atlas is behind you and the open desert begins at the edge of town.

Cycling the Dadès Gorge is best understood as part of a larger journey rather than a destination in itself. Its value is in the sequence: the elevation and effort of the Tizi n'Tichka are followed by the visual richness of the valley and gorge, which then gives way to the more austere and open terrain of the pre-Saharan south. Each section has a different physical demand and a different visual character, and the gorge sits at the hinge between the mountain world and the desert world. Ridden this way, as a stage in a route that moves from Marrakech to the Sahara over several days, the Dadès Gorge is not an interlude but a turning point.