Cervlo claims to have optimised the Caledonia 5 for pacy, long rides by adding down tube storage and increasing tyre clearance to 36mm. The high-end models now come with more aerodynamic Reserve wheels.The minor changes to the American brand's endurance bike reflect its intentions for the Caledonia: "all-day riding, high-pace group rides, and routes featuring less-than-ideal tarmac.As such, the Caledonia incorporates internal cable routing and mimics the aerodynamic tube shapes of the R5 climbing bike and S5 aero bike to cut drag.On the endurance bike, the S5's influence is evident in the head tubes rearward taper, the top tubes angular underside, and the depth of the down tube and fork legs.Cervlo says the seatstays are dropped to boost compliance, but not as far as the latest speros, contributing to the level of comfort the Caledonia provides for century rides or further.However, Cervlo adds that the Caledonia's down tube is more rigid than its gravel race bike, to feel more efficient while pedalling. The 2024 Cervlo Caledonia 5 range contains two Shimano and three SRAM builds, starting at 5,500 / $6,000 with the Caledonia 5 Rival AXS. The Caledonia 5 Red AXS tops the range at 11,000 / $12,000.Down tube storage, 36mm tyre clearance and good news for mechanicsThe storage hatch opens when you pull up the down tube bottle cage. - CervloThe increase in tyre clearance from 34mm to 36mm will enable you to fit wider road bike tyres, and run them at lower pressures for grip and comfort, rather than gravel tyres.All top four builds of the Cervlo Caledonia 5 are now specced with the Reserve 42/49 Turbulent Aero wheelset.The deeper rear rim depth (49mm versus 42mm) is claimed to reduce drag and weight. Reserves recommended tyre width range for the 25mm internal width is 29-40mm.You can hold your tools and tubes in one or two pouches. - CervloAnother notable change is the internal compartment, which can hold an inner tube, small multi-tool and C02 canister, according to the brand. You open this by lifting the down tube bottle cage. In addition, Cervlo has tried to make the Caledonia easier to work on. A new split bearing cap enables you to switch your stem without having to cut the brake and gear cables.Who is the Caledonia 5 for?Cervlo says the Caledonia is for "big, stupid rides". - CervloCervlo is pitching the Caledonia at those who want to complete ultra-distance events at speed, such as the Transcontinental Race.If you dont race, the Caledonia is also ideal for big, stupid rides where the mileage total stretches into three figures, according to Cervlo.Cyclists who ride in all conditions will be pleased to see the Caledonia retains removable mounts for mudguards.Cervlo says the Caledonia makes light work of rough, paved sufaces. - CervloDespite the Caledonia being approved for use in UCI-sanctioned races, we are unlikely to see the endurance bike in the mens WorldTour or womens WorldTour.Cervlo-sponsored Visma-Lease a Bike mainly races the S5 or R5. The Soloist endurance bike occasionally makes an appearance in the Spring Classics, probably making the less aero Caledonia surplus to requirements at elite level. An exception might be on a technical Grand Tour gravel stage, where the Caledonias wider tyre clearance (36mm) could come into its own. Cervlo Caledonia 5 geometryGeometry remains quite sporty for an endurance bike. - CervloThe Caledonia 5s sporty endurance geometry is unchanged from the previous generation.With a slacker head angle and longer wheelbase than the R-Series, the Caledonias handling should be slower and its ride more stable.The stack is similar to the spero's for an accessible ride position. Compared to the gravel race bike, the Caledonias reach is shorter, but it comes with a longer stem. 485154565861 Seat angle (degrees)74.57473.5737373 Head angle (degrees)70.571.572727272 Chainstay (mm)415415415415415415 Top tube (mm)502522543565581598 Head tube (mm)89.5109.9136162.3191.2217.5 Fork offset (mm)595350505050 Trail (mm)606060606060 Bottom bracket drop (mm)76.576.5747471.571.5 Wheelbase (mm)982.20984.50995.201,012.301,030.701,047.80 Standover (mm)712752784807834857 Stack (mm)505530555580605630 Reach (mm)360369378387396405 Edit Table Cervlo Caledonia 5 builds and pricingAt 11,000 / $12,000 / 12,999 / AU$16,500, the Cervlo Caledonia 5 Red AXS build is the most expensive. This comes with the latest Hammerhead Karoo, which is optimised for the groupset.Costing the same in dollars, but more in other currencies, is the Cervlo Caledonia 5 Dura-Ace Di2 at 10,500 / $12,000 / 11,999 / AU$16,000.Priced at 7,400 / $8,700 / 7,999 / AU$12,000, the Cervlo Caledonia 5 Ultegra Di2 and Caledonia 5 Force AXS are the third-tier models.The Cervlo Caledonia 5 Rival AXS is the least expensive bike, costing 5,500 / $6,000 / 5,999 / AU$6,900.Cervlo specs each model with a power meter, and a carbon handlebar and seatpost.A Cervlo Caledonia 5 frameset is yours for 4,400 / $5,000 / 4,799 / AU$6,900.Cervlo Caledonia 5 Red AXSThe SRAM Red AXS model tops the range. - CervloFrame: Caledonia-5, carbonWheels: Reserve 42/49 Turbulent Aero wheelsetGroupset: SRAM Red AXSTyres: Vittoria Corsa Pro Control TLR, 700X30cPrice: 11,000 / $12,000 / 12,999 / AU$16,500Cervlo Caledonia 5 Dura-Ace Di2The Dura-Ace Di2 build is only available in black. - CervloFrame: Caledonia-5, carbonWheels: Reserve 42/49 Turbulent Aero wheelsetGroupset: Shimano Dura-Ace Di2 R9200Tyres: Vittoria Corsa Pro Control TLR, 700X30cPrice: 10,500 / $12,000 / 11,999 / AU$16,000Cervlo Caledonia 5 Ultegra Di2Different wheel depths are claimed to reduce weight and drag. - CervloFrame: Caledonia-5, carbonWheels: Reserve 42/49 Turbulent Aero wheelsetGroupset: Shimano Ultegra Di2 R8100Tyres: Vittoria Corsa N.EXT TLR G2.0, 700x30cPrice: 7,400 / $8,700 / 7,999 / AU$12,000Cervlo Caledonia 5 Force AXSThe SRAM Force AXS build gets cheaper Vittoria tyres. - CervloFrame: Caledonia-5, carbonWheels: Reserve 42/49 Turbulent Aero wheelsetGroupset: SRAM Force AXSTyres: Vittoria Corsa N.EXT TLR G2.0, 700x30cPrice: 7,400 / $8,700 / 7,999 / AU$12,000Cervlo Caledonia 5 Rival AXSCervlo's Caledonia 5 Rival AXS trades down to Vision Team i23 hoops. - CervloFrame: Caledonia-5, carbonWheels: Vision Team i23 DiscGroupset: SRAM Rival AXSTyres: Vittoria Corsa Pro Control TLR, 700X30cPrice: 5,500 / $6,000 / 5,999 / AU$6,900