The fastest bike for Road to Sky
- 17.6 km with the 0.1 km lead-in
- 1044 m of climbing
- 59.7 m/km climb ratio
- 1 named climb
- Surface80.6% tarmac19.4% dirt
Fastest eligible setup · Standard (Road) · verified data only · Halo bikes hidden
with Princeton Alta 3532 wheels
1:14:28
14.2 km/h averageestimated for 1 lap with the lead-in
- Data
- Frame and wheels bot-tested
- Upgrades
- Ranked at upgrade stage 5, assumed for bikes you don't own
- Rough surfaces
- Rough surfaces cost this setup about 2:11 minutes here
What's the fastest bike for Road to Sky?
ZwiftBikes predicts the Specialized Aethos S-Works with Princeton Alta 3532 is the best bike and wheels for Road to Sky in Watopia: the fastest road setup for a 75 kg rider at 225 W, finishing in 1:14:28 (~14.2 km/h). The Specialized S-Works Tarmac SL8 with Princeton Alta 3532 is 22 s behind.
75 kg / 175 cm / 225 W / solo; 1 lap, including any lead-in once. Standard (Road); verified only; unowned Halo bikes excluded.
Every setup, ranked
Gap to the fastest. Open a row for its wheels, upgrades and the numbers behind it.
| # | Frame and wheels | Time | Gap | Gap axis | Aero / climb | Style | Details |
|---|---|---|---|---|---|---|---|
| 1 | Princeton Alta 3532 | 1:14:28 | fastest | 74 / 96 | climbing | ||
| 2 | Princeton Alta 3532 | 1:14:50 | +22.34 s | 93 / 83 | all-round | ||
| 3 | Princeton Alta 3532 | 1:14:50 | +22.34 s | 95 / 83 | all-round | ||
| 4 | Princeton Alta 3532 | 1:14:50 | +22.38 s | 42 / 86 | all-round | ||
| 5 | Princeton Alta 3532 | 1:14:51 | +23.07 s | 42 / 86 | climbing | ||
| 6 | Princeton Alta 3532 | 1:14:52 | +23.94 s | 94 / 82 | climbing | ||
| 7 | Princeton Alta 3532 | 1:14:55 | +26.93 s | 93 / 81 | climbing | ||
| 8 | Princeton Alta 3532 | 1:14:59 | +31.07 s | 42 / 82 | climbing | ||
| 9 | Princeton Alta 3532 | 1:15:00 | +31.95 s | 92 / 78 | all-round |
Something here look wrong? Report it – corrections with a source get folded back into the data.
Why this bike wins here
Road to Sky is mountainous, with 59.7 m of climbing per kilometre, the kind of course where low weight usually counts for far more than aerodynamics. The Specialized Aethos S-Works is a climbing frame, the kind of frame that terrain favours.
What the terrain rewards, from its climbing alone: aerodynamics against low weight
Aerodynamics 0%Weight on climbs 100%
- Drag area against the stock bike
- −0.0217 m²
- Mass against the stock bike
- −2.87 kg
- Rolling resistance change
- −0.0003
- Time lost to rough surfaces
- 2:11
- Physics model
- Dynamic, measured geometry
The course
1 lap; kilometre positions include the lead-in, ridden once.
- Fastest bike for Alpe du Zwift
Climb, HC · km 5.2 to 17.6
12.2 km · 8.5% 1040 m
Mapped surfaces; the shares describe one lap.
| Surface | Share | Distance | Extra watts |
|---|---|---|---|
| Tarmac | 80.6% | 14.1 km | - |
| Dirt | 19.4% | 3.4 km | - |
Extra watts are what the fastest setup needs to hold its pace on each surface rather than on tarmac, averaged over the ride - they appear once a ranked setup and mapped surface positions are there to simulate .
Specialized Aethos S-Works / Princeton Alta 3532 · 225 W · Solo · the whole ride. The line is this setup's simulated pace at every grade and surface change, over a faint elevation backdrop; the strip beneath marks the surface behind each dip.
Similar rides in Watopia
Dynamic physics model active
Every time below is simulated for your weight, height and power over this route’s real, measured elevation data.