The Bypass Under Sant Martí

Mallorca route guide · Serra de Tramuntana

Riding The Bypass Under Sant Martí

The straightest road the bend meter has ever graded — zero bends of any size — and the ride that shows why the meter is only half the story: 221 degrees of heading drift steer you gently the whole way while the hard shoulder, painted for bicycles over 98 per cent of its length, runs under the Puig de Sant Martí’s scrub flank. The drainage crosses under the road every few hundred metres; the one heritage site on the whole leg, a Roman-era necropolis, sits 21 metres off the verge with nothing above ground to give it away.

This point-to-point line covers 6.1 km, from Alcúdia toward the Ma-3470 toward toward Port d’Alcúdia.

This is coastal Mallorca rather than a generic blue horizon: the road’s relationship with coves, cliffs, ports, stone retaining walls, and open water is what defines it.

Captured in muntro

Relief, gradient, and how to pace it

The profile is restrained by Mallorca standards: 26 m separates its lowest and highest points. The interest comes from rhythm, surface changes, exposed straights, and the way the road moves through the landscape rather than one headline climb.

Use the opening kilometres to find cadence and keep the power smooth. The route is ideal for endurance work, recovery riding, or simply exploring the island without a large climbing bill.

Points to watch for

The best Mallorca routes are remembered as a sequence of places, not as a GPX line. These are the changes of scene that organise this ride.

1. 01

   Alcúdia

   The route rolls away from Alcúdia, giving you a few minutes to find cadence and read the road ahead.

2. 02

   the Ma-3470

   the Ma-3470 is one of the route’s defining changes of scene and a useful marker for pacing the ride.

3. 03

   toward Port d’Alcúdia

   toward Port d’Alcúdia is one of the route’s defining changes of scene and a useful marker for pacing the ride.

4. 04

   28 m high point

   At 28 m high point, the elevation trace reaches its ceiling before the road releases the height it has earned.

Why this road works indoors

muntro does not flatten the Bypass Under Sant Martí into a workout backdrop. The route’s bends, height, and junction order come from the road itself, while a compatible trainer reproduces the changing gradient under your pedals.

The point-to-point format gives the session a destination. There is no need to invent a finish when the real road already has one.