The fastest bike for Itza Party

46.3 km with the 0.5 km lead-in
507 m of climbing
11.1 m/km climb ratio
4 named climbs
Surface90.4% tarmac1.8% dirt7.7% brick and wood

0 km23.1 km46.3 km

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

with Cadex 4-Spoke/Disc wheels

1:24:47

32.7 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 30 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.

1:21:56

2:51 faster

What's the fastest bike for Itza Party?

ZwiftBikes predicts the Specialized S-Works Tarmac SL9 with Cadex 4-Spoke/Disc is the best bike and wheels for Itza Party in Watopia: the fastest road setup for a 75 kg rider at 225 W, finishing in 1:24:47 (~32.7 km/h). The Cannondale SuperSix EVO LAB71 Team with Cadex 4-Spoke/Disc is 0.92 s behind. Where TT bikes are allowed, the Canyon Speedmax CFR with Cadex 4-Spoke/Disc is 2:51 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.

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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	1:24:47	fastest	95 / 83	all-round
2	Cadex 4-Spoke/Disc	1:24:47	+0.92 s	94 / 82	climbing
3	Cadex 4-Spoke/Disc	1:24:49	+2.59 s	93 / 83	all-round
4	Same frame in another paint: Canyon Aeroad CFR Alpecin Premier-Tech Cadex 4-Spoke/Disc	1:24:49	+2.69 s	95 / 74	aero
5	Cadex 4-Spoke/Disc	1:24:50	+3.34 s	94 / 78	aero
6	Cadex 4-Spoke/Disc	1:24:50	+3.45 s	96 / 72	aero
7	Cadex 4-Spoke/Disc	1:24:50	+3.51 s	95 / 75	aero
8	Cadex 4-Spoke/Disc	1:24:50	+3.83 s	95 / 75	all-round
9	Cadex 4-Spoke/Disc	1:24:51	+4.41 s	93 / 81	climbing

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

Why this bike wins here

Itza Party is rolling, with 11.1 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 6.2 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 70%Weight on climbs 30%

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: 30 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 0.8 to 1.7
0.9 km · 5.0% 45 m
Fastest bike for Titans Grove KOM Rev.
Climb · km 15.2 to 16.1
0.9 km · 6.6% 60 m
Fastest bike for Mayan Mountainside KOM
Climb · km 39.9 to 41.9
2.0 km · 3.1% 62 m
Fastest bike for Itza KOM
Climb · km 42.5 to 46.2
3.8 km · 2.0% 75 m

Mapped surfaces; the shares describe one lap.

Surface	Share	Distance	Extra watts
Tarmac	90.4%	41.4 km	-
Brick	4.4%	2.0 km	-
Wood	3.3%	1.5 km	-
Dirt	1.8%	0.8 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.