Marathon 3DL 600 & 680
The world's most advanced cruising sails

Exceptionally fast, amazingly light, incredibly tough...North’s Marathon 3DL® is the world’s most advanced cruising sail. Inside the Marathon 3DL laminate is a custom 3DL-X yarn matrix designed specifically for cruising. Outside, North’s rugged TF taffeta/films provide exceptional protection from chafe, tear and UV degradation. Marathon 3DL sails are the only cruising sails in the world thermo-formed in their precise flying shape on full-sized 3-dimensional molds.

Marathon 3DL cruising sails are available in two styles:
Marathon 3DL 600 features a core of 100% high-modulus aramid yarn.
Marathon 3DL 680 features a core of blended high-modulus aramid and carbon fiber yarn for the ultimate in shape retention.

Both are available with white or gray TF taffeta outer films.

Product Highlights
  • 3D thermo-molded construction
  • 3D-X yarn layouts designed specifically for cruising
  • Tough North TF outer films in either white or gray
  • Adhesives formulated for superior UV protection, mildew resistance and extended sail life
  • Choice of high-modulus aramid yarn or blend of high-modulus aramid and carbon yarn

Which upwind sail is right for you?
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"We noticed a huge difference when we put up the Marathon sails. We could point 5 - 10 degrees higher and the boat was sailing faster. We’ve also spent a lot of time sailing with the jib partially furled in winds over 30 knots, and the shape still looks exactly like it did the first day. We’re very impressed.”

- Mark Myers, Swan 40 Tonic, Annapolis, MD


Marathon 3DL 600 features a core of high-modulus aramid yarn.




Marathon 3DL 680 features a core of blended high-modulus aramid and carbon yarn.
Marathon 3DL 600 & 680 Features - Mainsails and Headsails
  • 3DL thermo-molded construction
  • High-modulus aramid yarn (3DL 600)
  • High modulus aramid and carbon yarn (3DL 680)
  • 3DL-X yarn matrix
  • White or gray TF Taffeta outer films
  • Loose-footed main with Integral Foot Skirt for shape and control
  • Pre-stretched Dyneema leech and foot cords with purchase system and adjuster
  • Luff customized to mast/boom or headstay system (except for custom luff cars)
  • Teardrop corner reinforcing
  • Stainless steel round rings (Titanium if loads indicate a better fit) and Rutgerson press rings
  • RBS epoxy “E-glass” battens
  • Pockets with 3Di tie in closure
  • Cunningham adjustment
  • Antal Aluminum Clew block with Dacron UV clew cover on roller furling mainsails
  • Spreader and stanchion patches
  • Telltales
  • Drawstring sailbag
Mainsails
  • Higher roach profiles through added area
  • Reefs, Reef keepers and flaking handles
  • Reinforced In-Mast and In-Boom roller furling yarn layouts and construction
  • Leech, Full Length or VB+ Vertical battens in any quantity or combination
  • RBS Carbon full length battens
  • Custom reinforcements
  • Luff, Batten and Head Car systems
  • Overhead leech cord
  • Sail numbers
  • Country code
  • Insignia
  • Trim stripes/Glow Fast stripes
  • Photo and corner codes
  • Certified measurement
  • UV protection
  • SailKote Anti-Mildew Treatment
  • QuickCover
  • Custom or zippered sausage bag
Headsails
  • Telltale window
  • Leech, Full Length or VB+ Vertical battens in any quantity or combination
  • Inflatable batten pockets
  • 3DL roller reefing layout and patches
  • Rope Luff Reefing Pad and patches
  • Foam Luff with reefing patches
  • Reef
  • Customized patches, pads and reinforcements
  • Soft hanks
  • Soft clew
  • North Clewboard
  • T-ring clew
  • Tack Snap Shackle
  • Sail numbers
  • Country code
  • Trim stripes/Glow Fast stripes
  • Photo and corner codes
  • Certified measurement
  • UV protection
  • SailKote Anti-Mildew Treatment
  • Custom or zippered sausage bag
Marathon 3DL 600
  • 3D thermo-molded
    construction
  • High-modulus aramid yarn

  • Marathon 3DL 680
  • 3D thermo-molded
    construction
  • Blended high-modulus
    aramid and carbon yarn