Dog Run Calculator
— How Much Do You Need?

A dog run is a fenced outdoor area specifically designed to give your dog a safe, contained space to exercise, play, and spend time outside without supervision. It can be a simple strip of yard along the side of your house or a larger dedicated enclosure in your backyard. When it comes to surface material, gravel is widely considered the best option for most dog runs. Bare dirt turns into a muddy mess after rain and becomes a digging invitation for most dogs. Grass gets destroyed quickly under heavy paw traffic. Concrete and pavers can be hard on joints and get dangerously hot in the summer sun. Gravel, particularly smooth pea gravel, solves all of those problems at once. It drains quickly after rain so the run stays dry and firm. It does not compact into mud, and it discourages most dogs from digging because loose stone is less satisfying to excavate than soil. It is also easy to clean since waste either rinses through or can be scooped off the surface without hunting through grass. For most homeowners and dog owners, a properly installed gravel dog run is the lowest-maintenance, most durable outdoor surface option available.

Yes, a well-designed dog run is genuinely good for your dog's physical and mental health. Dogs need regular exercise and mental stimulation, and a dedicated run gives them a space to move freely and burn off energy even when you cannot take them on a walk. This is especially valuable for high-energy breeds or dogs that are left home during work hours. From a health standpoint, the surface you choose matters a great deal. A gravel surface keeps your dog's paws dry and clean between uses. Standing water and soggy dirt can lead to bacterial infections on paw pads, while a well-draining gravel base minimizes that risk. Smooth pea gravel is also gentle enough to walk and run on without causing abrasion or discomfort. The key is sizing the run appropriately for your dog's breed and energy level, keeping it clean on a regular schedule, and providing shade, fresh water, and enrichment items. A gravel surface makes the cleaning and maintenance side of that equation significantly easier, which means your dog is more likely to actually enjoy a consistently well-kept space.

Pea gravel is the most popular and widely recommended gravel for dog runs, and for good reason. It consists of small, naturally smooth, rounded stones typically ranging from about 3/8 inch to 1/2 inch in size. Because the edges are naturally worn smooth, pea gravel is gentle on paw pads and comfortable for dogs to walk, run, and lie down on. Its small, uniform size also makes it pack loosely enough to drain well while still feeling stable underfoot. You want to avoid angular crushed stone as your primary surface material in a dog run. Crushed stone has sharp, irregular edges that can be tough on paw pads over time, especially for dogs that spend extended time in the run. It works well as a base layer beneath the surface gravel, but it is not the right choice for the top layer where your dog will be directly in contact. River rock can work for larger dogs but tends to be too bulky and uneven for small breeds. Pea gravel hits the right balance of comfort, drainage, and ease of cleaning for the widest range of dogs and project types. When you are ready to order, the Hello Gravel team can help you confirm you are selecting the right product for your specific project.

For a functional, long-lasting dog run, you want a gravel depth of at least 3 to 4 inches. That depth gives you three important things: enough loose material to absorb and drain moisture effectively, enough volume that the gravel does not shift entirely out of place under regular use, and enough of a physical barrier to discourage digging. If your yard has naturally poor drainage or you live in a region with heavy rainfall, going slightly deeper, around 4 to 6 inches, is worth it. Some homeowners also opt to place a 2 to 3 inch base layer of a coarser crushed stone beneath the pea gravel surface. That base improves drainage from the bottom up and helps the top layer stay in place longer. When using a two-layer approach, you are still looking at 4 to 6 inches of total material depth combined. Going shallower than 3 inches is a common mistake. Thin gravel shifts and migrates quickly, leaving bare patches of soil that get muddy and undermine the whole purpose of using gravel in the first place. Investing in adequate depth from the start saves you from having to top up the run more frequently down the line.

The amount of gravel you need depends on the length, width, and target depth of your dog run. As a general reference, at a depth of 4 inches, one ton of pea gravel covers roughly 55 to 65 square feet, depending on the material's specific density. That means a 10 by 20 foot dog run, which equals 200 square feet, would require approximately 3 to 4 tons at that depth. Here are a few quick examples to give you a starting point, all based on a 4-inch surface depth: A small 6 by 10 foot run, which is 60 square feet, would take roughly 1 ton. A mid-size 10 by 20 foot run at 200 square feet would take around 3 to 4 tons. A larger 12 by 30 foot run at 360 square feet would take approximately 5 to 6 tons. These are estimates meant to give you a ballpark, not a final order quantity. Your actual needs will vary based on your exact dimensions, whether you plan to use a base layer beneath the surface gravel, and your target depth. The Hello Gravel online calculator makes it easy to input your measurements and get a more precise estimate before you order. Use it as your starting point, and if you have questions about what the right amount looks like for your specific run, the Hello Gravel team is glad to help.