Trek Marlin 6 Gen 3
Trek / Cross Country Mountain Bikes
Your first trail is waiting.
Marlin 6 is the perfect ride for progressing your skills on the trails. Its updated, slacker frame geometry makes descents easier to control, while a suspension fork helps smooth out bumpy terrain. Integrated rack and kickstand mounts make it easy to set up for weekday commuting or everyday errands.
Based on the bike's size chart. Your complimentary baseline fit in store dials in the rest.
In stock today at Roswell
Questions are welcome. No pressure, no bike jargon required.
The ride, not just the specs
Marlin is the mountain bike we hand to riders getting into trails. It's simple, tough, and confidence-inspiring, so you can focus on having fun.
Ride it on your local singletrack, the greenway, or anywhere in between.
What makes it special
Smaller frames have a top tube that dips down as it approaches the seat tube. This design makes for a lower standover height, which is good for shorter riders because it allows them to straddle their bike more easily. Larger frame sizes have a straight top tube because taller riders with longer legs typically don’t have the same issues with standover height.
Marlin comes in seven frame sizes to suit riders of any height, and Smart Wheel Size ensures you’re on the fastest wheel that fits. The smallest sizes even come with short-reach brake levers and narrower handlebars that give smaller riders better comfort and control.
Marlin looks and feels great. It’s packed with features usually found only on more expensive bikes, like a stylish frame with internal shift cable and brake hose routing, which can help your cables last longer by protecting them from the elements.
For the detail-oriented
Tap any group to see every part.
Measurements in cm unless noted.
| Size | XS | S | M | ML | L | XL |
|---|---|---|---|---|---|---|
| Rider height | 4'9"–5'1" | 5'1"–5'5" | 5'5"–5'10" | 5'8"–5'11" | 5'10"–6'2" | 6'2"–6'5" |
| Seat tube (A on the drawing) | 34.0 | 37.0 | 42.0 | 43.5 | 45.0 | 50.0 |
| Seat tube angle (B on the drawing) | 73.8° | 73.8° | 73.4° | 73.4° | 73.4° | 73.4° |
| Head tube length (C on the drawing) | 9.0 | 10.0 | 10.5 | 11.0 | 11.5 | 13.5 |
| Head tube angle (D on the drawing) | 66.5° | 66.5° | 66.5° | 66.5° | 66.5° | 66.5° |
| Eff. top tube (E on the drawing) | 55.1 | 57.9 | 61.5 | 63.1 | 64.7 | 67.8 |
| BB height (F on the drawing) | 31.3 | 31.3 | 30.8 | 30.8 | 30.8 | 30.8 |
| BB drop (G on the drawing) | 4.5 | 4.5 | 6.0 | 6.0 | 6.0 | 6.0 |
| Chainstay length (H on the drawing) | 43.3 | 43.3 | 43.8 | 43.8 | 43.8 | 43.8 |
| Offset (I on the drawing) | 4.2 | 4.2 | 4.6 | 4.6 | 4.6 | 4.6 |
| Trail (J on the drawing) | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 | 11.0 |
| Wheelbase (K on the drawing) | 109.2 | 112.1 | 116.3 | 118.0 | 119.7 | 123.0 |
| Standover (L on the drawing) | 65.8 | 69.2 | 74.7 | 75.9 | 77.1 | 79.1 |
| Reach (M on the drawing) | 39.0 | 41.5 | 44.0 | 45.5 | 47.0 | 49.5 |
| Stack (N on the drawing) | 56.3 | 57.2 | 60.9 | 61.4 | 61.8 | 63.7 |
| Frame size | 14.5" | 15.5" | 17.5" | 18.5" | 19.5" | 21.5" |
| Wheel size | 27.5" | 27.5" | 29" | 29" | 29" | 29" |
| Eff. seat tube angle | 74.0° | 74.0° | 74.0° | 74.0° | 74.0° | 74.0° |
The Atlanta Cycling difference
Specs matter. But so does how a bike feels when you ride it. Our team is here to help you choose the right size, understand the details, and get comfortable before your first ride.
When you buy from Atlanta Cycling, you're not just getting a box with a bicycle in it. You're getting a 30-day money-back guarantee, a complimentary baseline fit, lifetime basic adjustments, and real people who want you to love every mile.
Four neighborhood stores. One shared passion.
Ansley. Alpharetta. Roswell. Vinings. Stop by, take a test ride, ask questions, and meet the people who will be here long after your first ride.
