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How many stepping stones for my path?

Count the stepping stones for a garden path from its length and a comfortable stride, and the sand to set them.

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Stepping stones

16

Gap between stones
6 in
Leave the gap as lawn, gravel or ground cover
Sand per stone
0.38 cu ft
Sand for all stones
6.0 cu ft
Cost of stones
$128

A stepping-stone path is one of the simplest ways to cross a lawn or garden bed without wearing a muddy trail. The trick is spacing the stones to match a natural stride so the path is comfortable to walk.

Spacing for a natural stride

Measure from the center of one stone to the center of the next. For most adults walking at an easy pace, about 24 in feels natural. Use 20 to 22 in for children, older people or a winding, leisurely path, and up to 26 to 28 in for long-legged walkers.

A good way to check is to walk the route at your usual pace through damp grass or sand and measure your footprints.

How many stones?

stones = path length ÷ spacing + 1

The +1 adds a stone at the start. A 30 ft path at 24 in: 360 ÷ 24 = 15, plus 1 = 16 stones.

The gap between stones is the spacing minus the stone size. With 18 in stones at 24 in, the gaps are 6 in, enough for grass, gravel or a low ground cover. Stones should be at least about 12 to 16 in across to take a whole foot comfortably.

Setting the stones

  1. Lay the stones on the ground and walk the path, adjusting until the spacing feels right.
  2. Cut around each stone with a spade and remove it.
  3. Dig out the soil a little deeper than the stone’s thickness plus the sand bed.
  4. Add about 1 to 2 in of sand or fine gravel, level it, and set the stone so its top sits about level with the soil, or just below the lawn so a mower passes over it.
  5. Tap it down with a rubber mallet and check that it does not rock.

For an 18 in square stone, a 2 in sand bed takes about 0.4 cu ft of sand; 16 stones need about 6 cu ft.

Choosing stones

  • Natural flagstone gives an organic look; choose pieces at least 1.5 in thick so they do not crack.
  • Concrete pavers or precast stepping stones are uniform and inexpensive.
  • Wood rounds are rustic but rot within a few years.
  • Avoid polished or very smooth surfaces that become slippery when wet.

Maintenance

Reset stones that sink or tilt, trim grass around the edges with a string trimmer, and top up sand under any that rock.

Frequently asked questions

How far apart should stepping stones be?

About 24 in from center to center.

How many stepping stones for a 20 ft path?

About 11 at 24 in spacing.

How big should stepping stones be?

At least 12 to 16 in across.

What do you put under stepping stones?

About 1 to 2 in of sand or fine gravel.

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Results are estimates provided for information purposes. They do not replace professional advice.