The fastest bike for City and the Sgurr

8.6 km with the 2.7 km lead-in
166 m of climbing
17.4 m/km climb ratio
2 named climbs
Surface45.7% tarmac48.8% gravel5.5% cobbles

0 km4.3 km8.6 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 Princeton Wake 6560 White wheels

18:44

27.7 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 50 seconds here

See the full ranking

If time-trial frames are allowed

Canyon Speedmax CFR with Shimano DURA-ACE C99 + Disc (Time Trial)

TT frames are barred in many races.

18:26

19 s faster

What's the fastest bike for City and the Sgurr?

ZwiftBikes predicts the Specialized S-Works Tarmac SL9 with Princeton Wake 6560 White is the best bike and wheels for City and the Sgurr in Scotland: the fastest road setup for a 75 kg rider at 225 W, finishing in 18:44 (~27.7 km/h). The Cannondale SuperSix EVO LAB71 Team with Princeton Wake 6560 White is 0.21 s behind. Where TT bikes are allowed, the Canyon Speedmax CFR with Shimano DURA-ACE C99 + Disc is 19 s 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

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#	Frame and wheels	Time	Gap	Aero / climb	Style
1	Princeton Wake 6560 White	18:44	fastest	95 / 83	all-round
2	Princeton Wake 6560 White	18:45	+0.21 s	94 / 82	climbing
3	Princeton Wake 6560 White	18:45	+0.32 s	93 / 83	all-round
4	Princeton Wake 6560 White	18:45	+0.91 s	93 / 81	climbing
5	Princeton Wake 6560 White	18:46	+1.31 s	95 / 75	aero
6	Princeton Wake 6560 White	18:46	+1.43 s	94 / 78	aero
7	Princeton Wake 6560 White	18:46	+1.51 s	92 / 78	all-round
8	Same frame in another paint: Canyon Aeroad CFR Alpecin Premier-Tech Princeton Wake 6560 White	18:46	+1.58 s	95 / 74	aero
9	Princeton Wake 6560 White	18:46	+1.66 s	93 / 76	aero

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

Why this bike wins here

City and the Sgurr is hilly, with 17.4 m of climbing per kilometre, the kind of course where low weight usually counts for a little more than aerodynamics. The Specialized S-Works Tarmac SL9 is an all-round frame, the kind of frame that terrain favours. 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 47%Weight on climbs 53%

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: 50 s
Physics model: Dynamic, measured geometry

The course

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

Fastest bike for Sgurr Summit South
Climb · km 4.2 to 5.2
1.0 km · 3.3% 33 m
Fastest bike for Sgurr Summit North
Climb · km 7.1 to 8.6
1.6 km · 3.7% 58 m

Mapped surfaces; the shares describe one lap.

Surface	Share	Distance	Extra watts
Gravel	48.8%	2.9 km	-
Tarmac	45.7%	2.7 km	-
Cobbles	5.5%	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.