Furka · Grimsel · Susten Big Three Dawn

3 passes in 223 km, topping out at 2429 m

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Why this ride

Three alpine legends, best before the traffic wakes up. This road trip is shaped as a ride, not as a shortcut: leave the start cleanly, use the first checkpoint for fuel and weather discipline, then ride Sustenpass west ramp with something in reserve. The best part sits around Sustenpass west ramp, Grimselpass reservoirs, Furkapass glacier road, while Altdorf fuel gate and Innertkirchen food reset keep the day practical instead of turning it into a fuel hunt. Check the selected map before departure: scenic sections, transfer sections, speed/control reminders, risk points and the GPX checkpoint order are deliberately visible so the route is understandable before the engine starts. Ride it early if the area is popular, keep the photo stops legal, and shorten the route if weather, daylight or energy stops agreeing with the plan.

Roadbook

1. Altdorf fuel gate fuel · 458 m

   Fuel at 0 km. Next is Sustenpass west ramp, climbing 1766 m.

2. Sustenpass west ramp pass · 2224 m

   You top out at 2224 m here. The road climbs 1766 m on the way up to it, steadily. Reckon on about 11 °C colder than the valley, and more in the wind. At this height the road is a summer one: snow gates can stay shut into June and shut again in October. Next is Innertkirchen, mostly downhill.

3. Innertkirchen food reset food · 625 m

   A break here at 79 km. You lose 1599 m on the way down to it, hard. Next is Grimselpass reservoirs, climbing 1539 m.

4. Grimselpass reservoirs pass · 2164 m

   The high point of this section, 2164 m up. The road climbs 1539 m on the way up to it, steeply. Next is Furkapass glacier road, climbing 265 m.

5. Furkapass glacier road pass · 2429 m

   Furkapass glacier road tops the climb at 2429 m. The road climbs 265 m on the way up to it, steadily. Reckon on about 13 °C colder than the valley, and more in the wind. Nothing on this route is higher. Next is Realp descent, mostly downhill.

6. Realp descent fuel check fuel · 1538 m

   Realp descent is the fuel stop for this leg. You lose 891 m on the way down to it, steeply. Reckon on about 7 °C colder than the valley, and more in the wind. Next is Altdorf, mostly downhill.

7. Back to Altdorf finish · 458 m

   Back to Altdorf closes the day. You lose 1080 m on the way down to it, steeply.

Where this sits

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