The fastest bike for Three Little Sisters

38.4 km with the 0.7 km lead-in
438 m of climbing
11.5 m/km climb ratio
3 named climbs
Surface94.5% tarmac0.8% dirt4.7% wood

0 km19.2 km38.4 kmThe dashed start is the lead-in, which has no measured profile, so its shape is approximated.

Fastest eligible setup · Standard (Road) · verified data only · Halo bikes hidden

with Cadex 4-Spoke/Disc wheels

1:09:15

33.3 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 14 seconds here

See the full ranking

If time-trial frames are allowed

Canyon Speedmax CFR with Cadex 4-Spoke/Disc (Time Trial)

TT frames are barred in many races.

1:06:56

2:19 faster

What's the fastest bike for Three Little Sisters?

ZwiftBikes predicts the Specialized S-Works Tarmac SL9 with Cadex 4-Spoke/Disc is the best bike and wheels for Three Little Sisters in Watopia: the fastest road setup for a 75 kg rider at 225 W, finishing in 1:09:15 (~33.3 km/h). The Cannondale SuperSix EVO LAB71 Team with Cadex 4-Spoke/Disc is 1.2 s behind. Where TT bikes are allowed, the Canyon Speedmax CFR with Cadex 4-Spoke/Disc is 2:19 quicker.

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.

Edit garage

Pick up to 3 setups in their rows to compare them.

All columns

#	Frame and wheels	Time	Gap	Aero / climb	Style
1	Cadex 4-Spoke/Disc	1:09:15	fastest	95 / 83	all-round
2	Cadex 4-Spoke/Disc	1:09:16	+1.23 s	94 / 82	climbing
3	Same frame in another paint: Canyon Aeroad CFR Alpecin Premier-Tech Cadex 4-Spoke/Disc	1:09:16	+1.24 s	95 / 74	aero
4	Cadex 4-Spoke/Disc	1:09:17	+1.95 s	93 / 83	all-round
5	Cadex 4-Spoke/Disc	1:09:17	+2.05 s	96 / 72	aero
6	Cadex 4-Spoke/Disc	1:09:18	+2.70 s	95 / 75	all-round
7	Cadex 4-Spoke/Disc	1:09:18	+2.77 s	95 / 75	aero
8	Cadex 4-Spoke/Disc	1:09:18	+2.95 s	93 / 81	climbing
9	Cadex 4-Spoke/Disc	1:09:18	+3.21 s	94 / 78	aero

Something here look wrong? Report it – corrections with a source get folded back into the data.

Why this bike wins here

Three Little Sisters is rolling, with 11.5 m of climbing per kilometre, the kind of course where aerodynamics usually counts for clearly more than low weight. The Specialized S-Works Tarmac SL9 is an all-round frame. Disc or regular wheels is a close call: the Cadex 4-Spoke/Disc is 4.8 s faster than the SwissSide HADRON Ultimate 650, but 0.37 kg heavier.

What the terrain rewards, from its climbing alone: aerodynamics against low weight

Aerodynamics 68%Weight on climbs 32%

Drag area against the stock bike: −0.0360 m²
Mass against the stock bike: −1.59 kg
Rolling resistance change: −0.0003
Time lost to rough surfaces: 14 s
Physics model: Dynamic, measured geometry

The course

1 lap; kilometre positions include the lead-in, ridden once.

Fastest bike for Zwift KOM
Climb · km 1.6 to 2.5
0.9 km · 5.0% 45 m
Fastest bike for Titans Grove KOM
Climb · km 13.7 to 16.3
2.6 km · 2.2% 57 m
Fastest bike for Volcano KOM
Climb · km 26.2 to 29.9
3.7 km · 3.2% 119 m

Mapped surfaces; the shares describe one lap.

Surface	Share	Distance	Extra watts
Tarmac	94.5%	35.7 km	-
Wood	4.7%	1.8 km	-
Dirt	0.8%	0.3 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 .

Dynamic physics model active

Every time below is simulated for your weight, height and power over this route’s real, measured elevation data.