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?
All Upwind Sails Page

"I ordered a J/105 named HORNPIPE in 2009 and commissioned her in 2010. As with all my previous boats, I fitted her with North sails, with Tim Dawson my point of contact and advisor.

We chose a Marathon 3DL main and comparable 105% jib. The main is of course not a one-design sail, as I have fitted it with a Dutchman furling system and just use it for cruising.

Now I am winding up the fourth season of fairly heavy use of these two sails. Both today look as they were just out of the box! The main draft is still well forward. No degradation of batten pockets, headboard or reef points. And the jib is similarly fine. In sum, still like-new sails that drive the boat very well.

So the Marathon technology works. Bravo for North!"
All best, Nick Brown -- Newport, RI

"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