Running Bowline
loop knot
Take an ordinary bowline and, instead of tying it around a post or through a ring, tie it around the rope's own standing part - the loop it makes can then be threaded around any object and drawn tight from a distance, because pulling the long end cinches the noose down while the small bowline itself stays fixed. That's the entire idea of the running bowline: a genuine noose, but one built from a knot that won't slip or come undone on its own the way a simple overhand loop can.
It shows up most often wherever something needs to be captured and dragged without being handled directly - snagging a stuck object out of water or a ditch, dropping a loop over a snag to haul it clear, or lassoing an awkward load from a safe distance. Farm and utility rope work has used it this way for as long as the plain bowline has existed, since the only real difference is tying the small bowline around the standing part instead of around a fixed post.
The knot's one serious limitation is also its defining trait: it tightens under load and keeps tightening as more pull is applied, which makes it entirely unsuitable as an improvised harness or sling around any part of a person or animal. That's a real constriction risk, not a theoretical one, and it's the specific reason the running bowline is a load-and-object knot, never a rescue-loop knot.
Because the noose portion is just the rope's own standing part sliding through a fixed bowline loop, the running bowline can also be untied almost as quickly as a plain bowline once the load comes off - unlike a constrictor knot or a true slip-noose arrangement, which can bind down hard enough to need real effort to loosen. That relative ease of release is part of why it remains a practical choice for quick, temporary hauling jobs where the rope needs to be freed and reused right away, rather than left in place.
How to tie the Running Bowline
Tie a small, ordinary bowline directly around the rope's own standing part rather than around a separate object.
Strength & security
Approx. strength retained: 55-65%
The bowline component holds its own loop reliably, so the noose it forms doesn't come undone the way a plain slip knot might; drag on the standing part cinches the noose tighter around whatever it's captured rather than loosening it.
Cautions: Because it tightens under load, it will constrict around anything soft or living - never use it as an improvised sling around a limb or torso. It also inherits the plain bowline's tendency to work loose over repeated slack-tight cycles if the small bowline itself isn't dressed tightly.
Alternatives
- Bowline
The fixed-loop original; use it instead whenever a noose that tightens under load isn't actually wanted.
- Honda Knot
A dedicated running-loop knot built for exactly this job - a smaller, stiffer eye that's the standard choice for lariats specifically, versus the running bowline's more general improvised use.
FAQ
Is the running bowline safe to use as a sling around a person?
No. It tightens under load and will constrict, which makes it genuinely dangerous around a limb or torso. Use a proper harness or rescue loop instead.
How is the running bowline different from a plain bowline?
The bowline itself is identical - it's tied around the rope's own standing part instead of a fixed object, which lets the standing part slide through the loop and form a noose.
Why not just use a slip knot for the same job?
A slip knot's loop can work its own way loose or jam unpredictably; the bowline component here holds its loop shape reliably, so the noose behaves consistently under repeated use.
Does the size of the small bowline loop matter?
Yes - too small and the standing part binds and drags heavily as it slides through; too large and the noose closes down more slowly than intended. Most tyers size it to roughly a hand's width, adjusting from there by feel for the specific rope and job.
Can the running bowline be used to retrieve gear dropped overboard?
Yes - it's a genuinely practical use: drop the noose over a snagged item, cinch it from a distance by pulling the standing part, and haul the object clear without needing to reach or dive for it directly.