Checkpoint ALR 3 is an adventure-ready aluminum gravel bike built for exploring beyond the pavement. Its modern endurance geometry keeps you comfortable over rough roads and long miles, while a carbon fork helps smooth out chatter and potholes. With clearance for up to 50mm tires, 10-speed Shimano CUES shifting, mechanical disc brakes, and plenty of mounts for bags and gear, it’s ready for everything from gravel detours to weekend escapes.
Road Sizing Chart
Giant Road Bike Sizing (Men's)
| Size | Rider Height (cm) |
|---|---|
| XS | 157 - 169 |
| S | 165 - 175 |
| M | 171 - 181 |
| M/L | 177 - 187 |
| L | 183 - 193 |
Giant Road Bike Sizing (Women's)
| Size | Rider Height (cm) |
|---|---|
| XXS | 149 - 157 |
| XS | 155 - 165 |
| S | 162 - 169 |
Trek Road Bike Sizing (Emonda / Domane Gen 3/4)
| Size | Rider Height (cm) |
|---|---|
| 47 | 152 - 158 |
| 50 | 158 - 163 |
| 52 | 163 - 172 |
| 54 | 172 - 178 |
| 56 | 178 - 182 |
Trek Road Bike Sizing (Madone Gen 8)
| Size | Rider Height (cm) |
|---|---|
| XS | 145 - 160 |
| S | 160 - 168 |
| M | 168 - 178 |
| ML | 178 - 185 |
| L | 183 - 190 |
The charts below show our recommended sizes based on height, but there are some other factors, like arm and leg length, that determine a great fit. That’s why you’ll see some overlap in our recommendations. Not every rider who’s 5´8˝, for example, will fit on the same size bike. The best way to find your perfect fit is to consult the experts at your local retailer.
Trek Checkpoint ALR 3 Gen3
RM6,099.00
Product highlights:
- 300 Series Alpha Aluminum, Internal cable routing, T47, UDH, rack and fender mounts, integrated frame bag mounts, flat mount disc, 142x12mm chamfered thru axle
- Trek Checkpoint, full carbon, tapered steerer, rack mount, thru axle
- Shimano CEUS 1 X 10s
- Bontrager Paradigm 23, Tubeless Ready Alloy Wheelset
- Tektro C550 mechanical disc brake, Dual piston
- Max tire clearance : 50mm
- Weight : 10.4kg















When Trek began in 1976, their mission was simple: Build the best Trek bikes in the world. Today, they have added to their mission: Help the world use the bicycle as a simple solution to complex problems. Trek. We believe in bikes.
Trek Bicycle Corp is a bicycle and cycling product manufacturer and distributor under brand names Trek, Electra Bicycle Company, Gary Fisher, Bontrager, Diamant Bikes, Villiger Bikes and, until 2008, LeMond Racing Cycles and Klein. With its headquarters in Waterloo, Wisconsin, Trek bicycles are marketed through 1,700 dealers across North America, subsidiaries in Europe and Asia as well as distributors in 90 countries worldwide.
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