The fastest bike for Tropic Rush

42.9 km with the 1.6 km lead-in
333 m of climbing
7.9 m/km climb ratio
1 named climb, 3 sprints
Surface42.1% tarmac20.5% sand and dirt37.3% brick and wood

0 km21.4 km42.9 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

1:15:08

34.2 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 1:00 minutes here

See the full ranking

If time-trial frames are allowed

Factor Hanzō with Cadex 4-Spoke/Disc (Time Trial)

TT frames are barred in many races.

1:12:19

2:49 faster

What's the fastest bike for Tropic Rush?

ZwiftBikes predicts the Specialized S-Works Tarmac SL9 with Cadex 4-Spoke/Disc is the best bike and wheels for Tropic Rush in Makuri Islands: the fastest road setup for a 75 kg rider at 225 W, finishing in 1:15:08 (~34.2 km/h). The Cannondale SuperSix EVO LAB71 Team with Cadex 4-Spoke/Disc is 0.89 s behind. Where TT bikes are allowed, the Factor Hanzō with Cadex 4-Spoke/Disc is 2:49 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	1:15:08	fastest	95 / 83	all-round
2	Cadex 4-Spoke/Disc	1:15:09	+0.89 s	94 / 82	climbing
3	Same frame in another paint: Canyon Aeroad CFR Alpecin Premier-Tech Cadex 4-Spoke/Disc	1:15:09	+1.08 s	95 / 74	aero
4	Cadex 4-Spoke/Disc	1:15:09	+1.33 s	96 / 72	aero
5	Cadex 4-Spoke/Disc	1:15:10	+1.81 s	95 / 75	aero
6	Cadex 4-Spoke/Disc	1:15:10	+1.99 s	95 / 75	all-round
7	Cadex 4-Spoke/Disc	1:15:10	+2.20 s	93 / 83	all-round
8	Cadex 4-Spoke/Disc	1:15:10	+2.42 s	95 / 70	aero
9	Cadex 4-Spoke/Disc	1:15:11	+2.86 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

Tropic Rush is rolling, with 7.9 m of climbing per kilometre, the kind of course where aerodynamics usually counts for far 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 6.3 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 82%Weight on climbs 18%

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: 1:00
Physics model: Dynamic, measured geometry

The course

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

Fastest bike for Railway Sprint
Sprint · km 7.9 to 8.4
0.5 km · flat
Fastest bike for Shisa Sprint
Sprint · km 22.9 to 23.2
0.3 km · flat
Fastest bike for Castle Park Sprint
Sprint · km 32.6 to 32.8
0.2 km · flat
Fastest bike for Rooftop KOM
Climb · km 35.9 to 37.8
1.9 km · 2.7% 50 m

Mapped surfaces; the shares describe one lap.

Surface	Share	Distance	Extra watts
Tarmac	42.1%	17.4 km	-
Brick	32.0%	13.2 km	-
Sand	18.3%	7.6 km	-
Wood	5.3%	2.2 km	-
Dirt	2.2%	0.9 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.