An aluminum frame endurance bike with mid-range components and mechanical disc brakes.
For This Bike
Based on frame geometry and build specs. Learn more →
A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills. Learn more
used for climbing
used for descending and sprinting
5'2" – 5'6"
5'5" – 5'10"
5'7" – 5'11"
5'9" – 6'1"
6'0" – 6'4"
6'3" – 6'8"
Do you have this bike? Help other riders make a decision about which size will work for them by sharing your own size and fit notes.
Aug 2022 · Dave Rome
An overhauled endurance road platform meets modern all-road capability. It’s wonderful but there's a but.
Smooth ride quality, versatile tyre clearance, stable yet-not-sluggish handling, Shimano Ultegra Di2, easy to service component fitments, classy subdued styling.
SmartSense and the fact it’s a forced feature you’re paying extra for, wheels could be fancier for the money, mis-matched thru-axles.
Feb 2022 · Stu Kerton
Beautiful to ride with a great blend of speed and comfort, but the electronic aids aren't that special – and aren't for me
Excellent geometry layout
Reflective seatstays are a clever touch
Trainer adaptors as standard
Cable routing not as clean as some
Low end wheelset comparative to the frame
Jan 2022 · Tobias Hörsch
Cannondale have overhauled the Synapse, adding an integrated radar and lights. Can it offer improved safety on the road? Read on to find out.
Added safety for cyclists
The lights switch from daytime to night mode automatically
Mounting points for mudguards etc.
Lack of cable integration up front
Somewhat lacking in long-distance comfort
Nov 2020 · Vern Pitt
The Cannondale Synapse Carbon 105 is a popular endurance bike that still has a spring in its step
Great at reducing road buzz
Frame probably due an update
Mar 2020 · Joe Robinson
The Cannondale Synapse is a bike for all occasions in this modern world of mixed-terrain riding
Suitable for mixed terrain
Doesn’t come with tubeless tyres
Jan 2020 · Robin Wilmott
One of the first bikes to offer features that now define a modern endurance machine, the Synapse expands the versatility and potential of a road bike with little difference in speed.. .
SmartForm frame, all-carbon fork, Tiagra, tyre volume
Front wheel deflection, mechanical disc brakes
SmartForm C2 Alloy, SAVE, BB30, internal cable routing, flat mount, 130x9mm QR
BB Standard: BB30, Press Fit
Color: Meteor Gray
BallisTec Full Carbon, integrated crown race, SAVE, 12x100mm thru-axle, internal routing
FSA Sealed Bearing, Integrated, 1-1/4"-1-1/8"
Cannondale 4, 6061 Alloy, 31.8, 7°
Cannondale 4, 6061 alloy, Compact
Cannondale Stage Ergo
Cannondale 4, 6061 Alloy, 25.4 x 300mm (48-51), 350mm (54-56), 400mm (58-61)
Wellgo w/ Clip and Strap
Cannondale Bar Tape, 3.5mm
Shimano Tiagra GS
Shimano Tiagra, braze-on
FSA Omega ME Alloy, 50/34
Shimano Tiagra, 10-speed
Shimano Tiagra, 11-34, 10-speed
KMC X10EL, 10-speed
Promax Decoder R cable-actuated disc, 160/160mm
RD 3.0, 28h
Stainless Steel, 14g
Formula CRX-512, 12x100
Formula DC-1422, QR
Vittoria Zaffiro, 700 x 30c