Coast Trail 20" 7

Coast Trail 20 7-speed profile, teal. Coast Trail 20 7-speed profile, silver.

See this bike in a different color:

  • Price: *
  • Wheel Size : 20"
  • Frame: Aluminum
  • Size Range: One Size

Manufacturer’s suggested retail price may not include additional shipping or preparation charges. Please contact your local Marin dealer for a quote.

Step up from the Coast Trail 16", and see the spec progress, just like the young rider in your life. The Coast Trail 20" 7 is built around a lightweight aluminum alloy frame and fork, but with the addition of a dependable and smooth-shifting Shimano 7-speed drivetrain - perfect for a growing rider who is able to get out for the ride to school, to the park or out on your neighborhood paths.


  • Frame

    Series 1 Lightweight Aluminum, Low Standover, 20” Wheels, Replaceable Derailleur Hanger, Rim Brake

  • Fork

    Series 1 Aluminum , Rim brake

  • Rim

    Aluminum, CNC Brake Surface

  • Hub Rear

    Forged Aluminum Alloy, 28H

  • Hub Front

    Forged Aluminum Alloy, 28H

  • Spokes

    14g Stainless Steel

  • Tires

    Marin X Vee Tire Co. Speedster, 20x2.0”

  • Derailleur Rear

    Shimano Tourney, 7-Speed

  • Derailleur Front


  • Shift Lever

    Microshift TS39 Short-Reach 7-Speed

  • Crankset

    Forged Alloy, 34T, 140mm, Ring Guard

  • Bottom Bracket

    Sealed Cartridge Bearings, Square Taper

  • Chain

    KMC 7-Speed

  • Cassette

    SunRace, 7-Speed, 11-34T

  • Brakes Front

    Linear Pull, Alloy

  • Brakes Rear

    Linear Pull, Alloy

  • Brake Levers

    Kid's Specific Short Reach Alloy Lever

  • Handlebar

    Marin Riser, 50mm Rise, 580mm Width, 19mm OD Grip Section

  • Stem

    Alloy, 40mm

  • Grips

    Single Densitiy, Thin Diameter Grip

  • Headset


  • Seatpost

    Aluminum, 27.2mm, Integrated Saddle/Post

  • Saddle

    Marin 20" Integrated Saddle/Post

  • Pedals

    Kids Specific Nylon Pedal

Specifications, pricing, and availability are subject to change without notice.


Coast Trail 20" 7 geometry diagram
Stack 407
Reach 299
Head Tube Angle 69°
Head Tube Length 100
Seat Tube Angle 73°
Seat Tube Length 280
Top Tube Effective 424
BB Height 227
BB Drop 30
Chain Stay 355
Wheel Base 840
Stand Over Height 450
Fork Offset 40
SeatPost Diameter 27.2
Handlebar Width None
Stem Length None
Crank Length None

All lengths in millimeters


Coast Trail 24 frame detail.


Coast Trail models are all built upon lightweight Series 1 aluminum frames and aluminum forks. This ensures that your young rider won't be held back by a heavy bike, as a lighter bike is easier to control and balance. The weight savings goes beyond the frame, and we ensured that every component spec'd offers the best balance of weight to durability.

Coast Trail 24 controls detail.


Kids are smaller all over, so our designers took that into consideration when designing the Coast Trails. Handlebars and grips are of smaller diameter than found on adult bikes, brake levers are specifically designed for smaller hands, and even the pedals and saddles are proportionally smaller. This helps kids maintain comfort and control while they are still developing their skills as riders.

Coast Trail 2.0" tire detail.


Smooth-rolling Marin x Vee Tire 2.0" wide tires are used on all Coast Trail models, with inverted tread to provide additional grip when needed.

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