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The fastest bike for Castle KOM

  • 2.7 km long
  • 62 m of climbing
  • 2.1% average grade
  • Surface73.9% tarmac26.1% cobbles and wood
0 km1.3 km2.7 km

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

with Princeton Wake 6560 White wheels

6:14

25.6 km/h averageestimated for the timed segment

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 4 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.

6:09

5.1 s faster

What's the fastest bike for the Castle KOM climb?

ZwiftBikes predicts the Specialized S-Works Tarmac SL9 with Princeton Wake 6560 White is the best bike and wheels for the Castle KOM climb in Makuri Islands: the fastest road setup for a 75 kg rider at 225 W, finishing in 6:14 (~25.6 km/h). The Specialized S-Works Tarmac SL8 with Princeton Wake 6560 White is 0.09 s behind. Where TT bikes are allowed, the Canyon Speedmax CFR with Cadex 4-Spoke/Disc is 5.1 s quicker.

75 kg / 175 cm / 225 W / solo; the timed segment, excluding warm-up. 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.
# Frame and wheels Time Gap Gap axis Aero / climb Style Details
1

Princeton Wake 6560 White

6:14fastest
95 / 83all-round
2

Princeton Wake 6560 White

6:15+0.09 s
93 / 83all-round
3

Princeton Wake 6560 White

6:15+0.18 s
94 / 82climbing
4

Princeton Wake 6560 White

6:15+0.33 s
93 / 81climbing
5

Princeton Wake 6560 White

6:15+0.54 s
94 / 78aero
6

Princeton Wake 6560 White

6:15+0.54 s
74 / 96climbing
7

Princeton Wake 6560 White

6:15+0.63 s
92 / 78all-round
8

Princeton Wake 6560 White

6:15+0.73 s
95 / 75aero
9

Princeton Wake 6560 White

6:15+0.73 s
91 / 78all-round

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

Why this bike wins here

Castle KOM is mountainous, with 24.5 m of climbing per kilometre, the kind of course where low weight usually counts for clearly more than aerodynamics. The Specialized S-Works Tarmac SL9 is an all-round frame. Disc or regular wheels is a close call: the Princeton Wake 6560 White is 0.33 s faster than the Cadex 4-Spoke/Disc here, and 0.55 kg lighter.

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

Aerodynamics 20%Weight on climbs 80%

Drag area against the stock bike
−0.0330 m²
Mass against the stock bike
−2.14 kg
Rolling resistance change
−0.0003
Time lost to rough surfaces
4 s
Physics model
Dynamic, measured geometry

The course

Mapped surfaces; the shares describe the timed segment.

Surface Share Distance Extra watts
Tarmac73.9%2.0 km-
Cobbles24.2%0.6 km-
Wood1.9%0.1 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, entered at racing speed rather than from a standing start.