There are two solid options available to paddlers to help measure the distance traveled while kayaking. The first method uses the Earth's curvature and a bit of geometry to estimate distance traveled. Kayakers use their seated height in the kayak to determine the distance to the horizon and distance to objects beyond the horizon. This estimation is based on the rule that objects disappear as you move away from them and come more fully into view as you move toward them. The second method uses a conventional GPS device to estimate distance based on average speed while paddling and the time paddled.
Estimating Distance Traveled Using Method 1
Step 1
Estimate eye level height above the water while seated in the cockpit of your kayak. When seated, the eye level for a paddler of average height is approximately 2 feet above water.
Step 2
Determine the square root of your eye level height. Based on the example above, the square root is 1.4, or roughly 1.4 miles from the horizon.
Step 3
Use this method to measure the distance from an object when its base becomes visible.
Step 4
Measure objects beyond the horizon by applying the same rule. Estimate the height of the object. Determine its square root to measure distance. For example, the top of a 200 foot cliff face is just visible beyond the horizon. Using this formula places the cliff approximately 14 miles away.
Estimating Distance Traveled Using Method 2
Step 1
Turn the GPS on when you set out kayaking. Maintain the GPS in the on position during the entire time you are paddling.
Step 2
Paddle in a straight line. If you are unable to paddle in a straight line, set way points at each change in direction. Your average speed and time indicates distance traveled. For example, kayaking for two hours at an average rate of 3.3 mph indicates you paddled approximately 6.6 miles.
Step 3
Understand currents and wind speed. Currents or wind moving in the direction you are traveling allow you to arrive at your destination faster. The GPS does not factor current or wind into its measurement of your speed of travel.
Tips and Warnings
- Purchase a map of the area you plan to paddle. Becoming familiar with your paddling destination will also help you to better estimate the distance you travel. Also, check in with the local marina and find out about currents and tides in the area.
- While winds provide fun waves to surf, off-shore winds can make it challenging to paddle back to the safety of the shoreline. Always check the weather forecast before setting out and note wind directions and speed.



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