GPS Accuracy-breakdown

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1 Devices then Condition

Device Condition Count Trueness (Average Distance Error) Standard Deviation 95% within
Garmin 10 Normal 834 8.155% (430.6 Ft/Mile 81.5 m/Km) 4.0% (208.9 Ft/Mile 39.6 m/Km) 7.9% (417.8 Ft/Mile 79.1 m/Km)
Under Bridge 62 3.649% (192.7 Ft/Mile 36.5 m/Km) 3.2% (171.1 Ft/Mile 32.4 m/Km) 6.5% (342.2 Ft/Mile 64.8 m/Km)
Post Bridge 62 12.658% (668.3 Ft/Mile 126.6 m/Km) 4.2% (222.5 Ft/Mile 42.1 m/Km) 8.4% (444.9 Ft/Mile 84.3 m/Km)
Turn Around 62 14.425% (761.6 Ft/Mile 144.3 m/Km) 4.8% (254.0 Ft/Mile 48.1 m/Km) 9.6% (508.0 Ft/Mile 96.2 m/Km)
Straight 162 5.848% (308.8 Ft/Mile 58.5 m/Km) 2.8% (147.8 Ft/Mile 28.0 m/Km) 5.6% (295.7 Ft/Mile 56.0 m/Km)
Power Line 129 8.278% (437.1 Ft/Mile 82.8 m/Km) 3.7% (196.1 Ft/Mile 37.1 m/Km) 7.4% (392.1 Ft/Mile 74.3 m/Km)
Mixed 1020 8.536% (450.7 Ft/Mile 85.4 m/Km) 4.5% (239.8 Ft/Mile 45.4 m/Km) 9.1% (479.7 Ft/Mile 90.8 m/Km)
Garmin 205 Normal 917 1.394% (73.6 Ft/Mile 13.9 m/Km) 3.0% (160.2 Ft/Mile 30.3 m/Km) 6.1% (320.4 Ft/Mile 60.7 m/Km)
Under Bridge 66 -1.379% (72.8 Ft/Mile 13.8 m/Km) 7.4% (390.2 Ft/Mile 73.9 m/Km) 14.8% (780.4 Ft/Mile 147.8 m/Km)
Post Bridge 66 2.157% (113.9 Ft/Mile 21.6 m/Km) 2.4% (125.5 Ft/Mile 23.8 m/Km) 4.8% (250.9 Ft/Mile 47.5 m/Km)
Turn Around 73 3.643% (192.3 Ft/Mile 36.4 m/Km) 2.6% (136.0 Ft/Mile 25.8 m/Km) 5.2% (272.0 Ft/Mile 51.5 m/Km)
Straight 196 0.483% (25.5 Ft/Mile 4.8 m/Km) 1.9% (99.9 Ft/Mile 18.9 m/Km) 3.8% (199.9 Ft/Mile 37.9 m/Km)
Power Line 127 1.395% (73.7 Ft/Mile 14.0 m/Km) 2.3% (122.5 Ft/Mile 23.2 m/Km) 4.6% (245.1 Ft/Mile 46.4 m/Km)
Mixed 1122 1.422% (75.1 Ft/Mile 14.2 m/Km) 3.5% (185.3 Ft/Mile 35.1 m/Km) 7.0% (370.6 Ft/Mile 70.2 m/Km)
Garmin 620 Normal 1106 7.051% (372.3 Ft/Mile 70.5 m/Km) 3.9% (206.1 Ft/Mile 39.0 m/Km) 7.8% (412.1 Ft/Mile 78.1 m/Km)
Under Bridge 61 4.818% (254.4 Ft/Mile 48.2 m/Km) 4.2% (219.7 Ft/Mile 41.6 m/Km) 8.3% (439.4 Ft/Mile 83.2 m/Km)
Post Bridge 61 8.900% (469.9 Ft/Mile 89.0 m/Km) 4.9% (257.6 Ft/Mile 48.8 m/Km) 9.8% (515.2 Ft/Mile 97.6 m/Km)
Turn Around 80 11.302% (596.7 Ft/Mile 113.0 m/Km) 4.3% (228.5 Ft/Mile 43.3 m/Km) 8.7% (457.0 Ft/Mile 86.6 m/Km)
Straight 228 5.369% (283.5 Ft/Mile 53.7 m/Km) 2.6% (136.2 Ft/Mile 25.8 m/Km) 5.2% (272.5 Ft/Mile 51.6 m/Km)
Power Line 162 7.860% (415.0 Ft/Mile 78.6 m/Km) 2.8% (148.7 Ft/Mile 28.2 m/Km) 5.6% (297.5 Ft/Mile 56.3 m/Km)
Mixed 1308 7.293% (385.1 Ft/Mile 72.9 m/Km) 4.2% (220.1 Ft/Mile 41.7 m/Km) 8.3% (440.2 Ft/Mile 83.4 m/Km)
iPhone 4s Normal 776 2.947% (155.6 Ft/Mile 29.5 m/Km) 3.5% (182.4 Ft/Mile 34.5 m/Km) 6.9% (364.8 Ft/Mile 69.1 m/Km)
Under Bridge 59 1.402% (74.0 Ft/Mile 14.0 m/Km) 3.4% (178.0 Ft/Mile 33.7 m/Km) 6.7% (356.1 Ft/Mile 67.4 m/Km)
Post Bridge 54 4.422% (233.5 Ft/Mile 44.2 m/Km) 3.0% (157.4 Ft/Mile 29.8 m/Km) 6.0% (314.9 Ft/Mile 59.6 m/Km)
Turn Around 62 6.623% (349.7 Ft/Mile 66.2 m/Km) 4.5% (235.6 Ft/Mile 44.6 m/Km) 8.9% (471.3 Ft/Mile 89.3 m/Km)
Straight 164 2.034% (107.4 Ft/Mile 20.3 m/Km) 2.9% (152.2 Ft/Mile 28.8 m/Km) 5.8% (304.4 Ft/Mile 57.6 m/Km)
Power Line 110 2.560% (135.2 Ft/Mile 25.6 m/Km) 2.9% (152.7 Ft/Mile 28.9 m/Km) 5.8% (305.3 Ft/Mile 57.8 m/Km)
Mixed 951 3.175% (167.6 Ft/Mile 31.7 m/Km) 3.7% (192.9 Ft/Mile 36.5 m/Km) 7.3% (385.8 Ft/Mile 73.1 m/Km)
Polar RC3 GPS Normal 1166 1.537% (81.2 Ft/Mile 15.4 m/Km) 3.7% (197.5 Ft/Mile 37.4 m/Km) 7.5% (395.1 Ft/Mile 74.8 m/Km)
Under Bridge 88 5.601% (295.7 Ft/Mile 56.0 m/Km) 7.7% (408.0 Ft/Mile 77.3 m/Km) 15.5% (815.9 Ft/Mile 154.5 m/Km)
Post Bridge 86 7.409% (391.2 Ft/Mile 74.1 m/Km) 4.9% (260.1 Ft/Mile 49.3 m/Km) 9.9% (520.3 Ft/Mile 98.5 m/Km)
Turn Around 93 5.757% (304.0 Ft/Mile 57.6 m/Km) 4.5% (236.0 Ft/Mile 44.7 m/Km) 8.9% (472.0 Ft/Mile 89.4 m/Km)
Straight 239 0.436% (23.0 Ft/Mile 4.4 m/Km) 2.7% (142.4 Ft/Mile 27.0 m/Km) 5.4% (284.8 Ft/Mile 53.9 m/Km)
Power Line 171 1.964% (103.7 Ft/Mile 19.6 m/Km) 3.6% (188.8 Ft/Mile 35.8 m/Km) 7.2% (377.6 Ft/Mile 71.5 m/Km)
Mixed 1433 2.413% (127.4 Ft/Mile 24.1 m/Km) 4.6% (243.6 Ft/Mile 46.1 m/Km) 9.2% (487.1 Ft/Mile 92.3 m/Km)
Garmin 310XT with Footpod Normal 3293 2.104% (111.1 Ft/Mile 21.0 m/Km) 3.5% (186.9 Ft/Mile 35.4 m/Km) 7.1% (373.8 Ft/Mile 70.8 m/Km)
Under Bridge 221 2.970% (156.8 Ft/Mile 29.7 m/Km) 3.6% (192.7 Ft/Mile 36.5 m/Km) 7.3% (385.4 Ft/Mile 73.0 m/Km)
Post Bridge 188 4.095% (216.2 Ft/Mile 41.0 m/Km) 3.7% (197.4 Ft/Mile 37.4 m/Km) 7.5% (394.8 Ft/Mile 74.8 m/Km)
Turn Around 205 5.573% (294.2 Ft/Mile 55.7 m/Km) 4.2% (219.6 Ft/Mile 41.6 m/Km) 8.3% (439.2 Ft/Mile 83.2 m/Km)
Straight 697 0.762% (40.2 Ft/Mile 7.6 m/Km) 2.7% (142.7 Ft/Mile 27.0 m/Km) 5.4% (285.4 Ft/Mile 54.0 m/Km)
Power Line 515 2.566% (135.5 Ft/Mile 25.7 m/Km) 3.5% (183.2 Ft/Mile 34.7 m/Km) 6.9% (366.5 Ft/Mile 69.4 m/Km)
Mixed 3907 2.430% (128.3 Ft/Mile 24.3 m/Km) 3.7% (195.1 Ft/Mile 37.0 m/Km) 7.4% (390.2 Ft/Mile 73.9 m/Km)
Garmin 310XT no Footpod Normal 1605 2.779% (146.7 Ft/Mile 27.8 m/Km) 4.0% (210.7 Ft/Mile 39.9 m/Km) 8.0% (421.4 Ft/Mile 79.8 m/Km)
Under Bridge 110 0.934% (49.3 Ft/Mile 9.3 m/Km) 4.2% (222.5 Ft/Mile 42.1 m/Km) 8.4% (445.1 Ft/Mile 84.3 m/Km)
Post Bridge 106 5.053% (266.8 Ft/Mile 50.5 m/Km) 3.5% (187.0 Ft/Mile 35.4 m/Km) 7.1% (374.1 Ft/Mile 70.8 m/Km)
Turn Around 124 5.981% (315.8 Ft/Mile 59.8 m/Km) 5.4% (285.5 Ft/Mile 54.1 m/Km) 10.8% (571.0 Ft/Mile 108.2 m/Km)
Straight 326 1.677% (88.5 Ft/Mile 16.8 m/Km) 3.2% (169.3 Ft/Mile 32.1 m/Km) 6.4% (338.7 Ft/Mile 64.1 m/Km)
Power Line 229 3.360% (177.4 Ft/Mile 33.6 m/Km) 3.6% (187.7 Ft/Mile 35.5 m/Km) 7.1% (375.3 Ft/Mile 71.1 m/Km)
Mixed 1945 3.003% (158.5 Ft/Mile 30.0 m/Km) 4.2% (222.6 Ft/Mile 42.2 m/Km) 8.4% (445.1 Ft/Mile 84.3 m/Km)
Garmin 610 Normal 825 3.173% (167.5 Ft/Mile 31.7 m/Km) 3.6% (187.5 Ft/Mile 35.5 m/Km) 7.1% (374.9 Ft/Mile 71.0 m/Km)
Under Bridge 58 2.792% (147.4 Ft/Mile 27.9 m/Km) 3.7% (195.4 Ft/Mile 37.0 m/Km) 7.4% (390.8 Ft/Mile 74.0 m/Km)
Post Bridge 58 5.319% (280.9 Ft/Mile 53.2 m/Km) 2.5% (134.4 Ft/Mile 25.5 m/Km) 5.1% (268.9 Ft/Mile 50.9 m/Km)
Turn Around 63 6.569% (346.8 Ft/Mile 65.7 m/Km) 2.8% (150.3 Ft/Mile 28.5 m/Km) 5.7% (300.6 Ft/Mile 56.9 m/Km)
Straight 168 0.940% (49.6 Ft/Mile 9.4 m/Km) 3.0% (160.0 Ft/Mile 30.3 m/Km) 6.1% (320.0 Ft/Mile 60.6 m/Km)
Power Line 119 3.757% (198.4 Ft/Mile 37.6 m/Km) 2.5% (132.5 Ft/Mile 25.1 m/Km) 5.0% (265.0 Ft/Mile 50.2 m/Km)
Mixed 1004 3.488% (184.2 Ft/Mile 34.9 m/Km) 3.6% (189.9 Ft/Mile 36.0 m/Km) 7.2% (379.7 Ft/Mile 71.9 m/Km)
Garmin 910XT with Footpod Normal 600 1.532% (80.9 Ft/Mile 15.3 m/Km) 2.9% (152.8 Ft/Mile 28.9 m/Km) 5.8% (305.6 Ft/Mile 57.9 m/Km)
Under Bridge 42 0.419% (22.1 Ft/Mile 4.2 m/Km) 3.1% (161.7 Ft/Mile 30.6 m/Km) 6.1% (323.3 Ft/Mile 61.2 m/Km)
Post Bridge 40 4.339% (229.1 Ft/Mile 43.4 m/Km) 2.1% (113.2 Ft/Mile 21.4 m/Km) 4.3% (226.4 Ft/Mile 42.9 m/Km)
Turn Around 43 5.117% (270.2 Ft/Mile 51.2 m/Km) 2.6% (135.3 Ft/Mile 25.6 m/Km) 5.1% (270.7 Ft/Mile 51.3 m/Km)
Straight 122 0.291% (15.4 Ft/Mile 2.9 m/Km) 2.0% (107.3 Ft/Mile 20.3 m/Km) 4.1% (214.6 Ft/Mile 40.7 m/Km)
Power Line 90 2.101% (110.9 Ft/Mile 21.0 m/Km) 2.4% (127.2 Ft/Mile 24.1 m/Km) 4.8% (254.4 Ft/Mile 48.2 m/Km)
Mixed 725 1.835% (96.9 Ft/Mile 18.3 m/Km) 3.0% (161.0 Ft/Mile 30.5 m/Km) 6.1% (322.0 Ft/Mile 61.0 m/Km)

2 Condition then Devices

Condition Device Count Trueness (Average Distance Error) Standard Deviation 95% within
Normal Garmin 10 834 8.155% (430.6 Ft/Mile 81.5 m/Km) 4.0% (208.9 Ft/Mile 39.6 m/Km) 7.9% (417.8 Ft/Mile 79.1 m/Km)
Garmin 205 917 1.394% (73.6 Ft/Mile 13.9 m/Km) 3.0% (160.2 Ft/Mile 30.3 m/Km) 6.1% (320.4 Ft/Mile 60.7 m/Km)
Garmin 620 1106 7.051% (372.3 Ft/Mile 70.5 m/Km) 3.9% (206.1 Ft/Mile 39.0 m/Km) 7.8% (412.1 Ft/Mile 78.1 m/Km)
iPhone 4s 776 2.947% (155.6 Ft/Mile 29.5 m/Km) 3.5% (182.4 Ft/Mile 34.5 m/Km) 6.9% (364.8 Ft/Mile 69.1 m/Km)
Polar RC3 GPS 1166 1.537% (81.2 Ft/Mile 15.4 m/Km) 3.7% (197.5 Ft/Mile 37.4 m/Km) 7.5% (395.1 Ft/Mile 74.8 m/Km)
Garmin 310XT with Footpod 3293 2.104% (111.1 Ft/Mile 21.0 m/Km) 3.5% (186.9 Ft/Mile 35.4 m/Km) 7.1% (373.8 Ft/Mile 70.8 m/Km)
Garmin 310XT no Footpod 1605 2.779% (146.7 Ft/Mile 27.8 m/Km) 4.0% (210.7 Ft/Mile 39.9 m/Km) 8.0% (421.4 Ft/Mile 79.8 m/Km)
Garmin 610 825 3.173% (167.5 Ft/Mile 31.7 m/Km) 3.6% (187.5 Ft/Mile 35.5 m/Km) 7.1% (374.9 Ft/Mile 71.0 m/Km)
Garmin 910XT with Footpod 600 1.532% (80.9 Ft/Mile 15.3 m/Km) 2.9% (152.8 Ft/Mile 28.9 m/Km) 5.8% (305.6 Ft/Mile 57.9 m/Km)
All 11122 3.136% (165.6 Ft/Mile 31.4 m/Km) 4.2% (221.2 Ft/Mile 41.9 m/Km) 8.4% (442.4 Ft/Mile 83.8 m/Km)
Under Bridge Garmin 10 62 3.649% (192.7 Ft/Mile 36.5 m/Km) 3.2% (171.1 Ft/Mile 32.4 m/Km) 6.5% (342.2 Ft/Mile 64.8 m/Km)
Garmin 205 66 -1.379% (72.8 Ft/Mile 13.8 m/Km) 7.4% (390.2 Ft/Mile 73.9 m/Km) 14.8% (780.4 Ft/Mile 147.8 m/Km)
Garmin 620 61 4.818% (254.4 Ft/Mile 48.2 m/Km) 4.2% (219.7 Ft/Mile 41.6 m/Km) 8.3% (439.4 Ft/Mile 83.2 m/Km)
iPhone 4s 59 1.402% (74.0 Ft/Mile 14.0 m/Km) 3.4% (178.0 Ft/Mile 33.7 m/Km) 6.7% (356.1 Ft/Mile 67.4 m/Km)
Polar RC3 GPS 88 5.601% (295.7 Ft/Mile 56.0 m/Km) 7.7% (408.0 Ft/Mile 77.3 m/Km) 15.5% (815.9 Ft/Mile 154.5 m/Km)
Garmin 310XT with Footpod 221 2.970% (156.8 Ft/Mile 29.7 m/Km) 3.6% (192.7 Ft/Mile 36.5 m/Km) 7.3% (385.4 Ft/Mile 73.0 m/Km)
Garmin 310XT no Footpod 110 0.934% (49.3 Ft/Mile 9.3 m/Km) 4.2% (222.5 Ft/Mile 42.1 m/Km) 8.4% (445.1 Ft/Mile 84.3 m/Km)
Garmin 610 58 2.792% (147.4 Ft/Mile 27.9 m/Km) 3.7% (195.4 Ft/Mile 37.0 m/Km) 7.4% (390.8 Ft/Mile 74.0 m/Km)
Garmin 910XT with Footpod 42 0.419% (22.1 Ft/Mile 4.2 m/Km) 3.1% (161.7 Ft/Mile 30.6 m/Km) 6.1% (323.3 Ft/Mile 61.2 m/Km)
All 767 2.534% (133.8 Ft/Mile 25.3 m/Km) 5.1% (270.6 Ft/Mile 51.3 m/Km) 10.3% (541.2 Ft/Mile 102.5 m/Km)
Post Bridge Garmin 10 62 12.658% (668.3 Ft/Mile 126.6 m/Km) 4.2% (222.5 Ft/Mile 42.1 m/Km) 8.4% (444.9 Ft/Mile 84.3 m/Km)
Garmin 205 66 2.157% (113.9 Ft/Mile 21.6 m/Km) 2.4% (125.5 Ft/Mile 23.8 m/Km) 4.8% (250.9 Ft/Mile 47.5 m/Km)
Garmin 620 61 8.900% (469.9 Ft/Mile 89.0 m/Km) 4.9% (257.6 Ft/Mile 48.8 m/Km) 9.8% (515.2 Ft/Mile 97.6 m/Km)
iPhone 4s 54 4.422% (233.5 Ft/Mile 44.2 m/Km) 3.0% (157.4 Ft/Mile 29.8 m/Km) 6.0% (314.9 Ft/Mile 59.6 m/Km)
Polar RC3 GPS 86 7.409% (391.2 Ft/Mile 74.1 m/Km) 4.9% (260.1 Ft/Mile 49.3 m/Km) 9.9% (520.3 Ft/Mile 98.5 m/Km)
Garmin 310XT with Footpod 188 4.095% (216.2 Ft/Mile 41.0 m/Km) 3.7% (197.4 Ft/Mile 37.4 m/Km) 7.5% (394.8 Ft/Mile 74.8 m/Km)
Garmin 310XT no Footpod 106 5.053% (266.8 Ft/Mile 50.5 m/Km) 3.5% (187.0 Ft/Mile 35.4 m/Km) 7.1% (374.1 Ft/Mile 70.8 m/Km)
Garmin 610 58 5.319% (280.9 Ft/Mile 53.2 m/Km) 2.5% (134.4 Ft/Mile 25.5 m/Km) 5.1% (268.9 Ft/Mile 50.9 m/Km)
Garmin 910XT with Footpod 40 4.339% (229.1 Ft/Mile 43.4 m/Km) 2.1% (113.2 Ft/Mile 21.4 m/Km) 4.3% (226.4 Ft/Mile 42.9 m/Km)
All 721 5.733% (302.7 Ft/Mile 57.3 m/Km) 4.6% (244.1 Ft/Mile 46.2 m/Km) 9.2% (488.3 Ft/Mile 92.5 m/Km)
Turn Around Garmin 10 62 14.425% (761.6 Ft/Mile 144.3 m/Km) 4.8% (254.0 Ft/Mile 48.1 m/Km) 9.6% (508.0 Ft/Mile 96.2 m/Km)
Garmin 205 73 3.643% (192.3 Ft/Mile 36.4 m/Km) 2.6% (136.0 Ft/Mile 25.8 m/Km) 5.2% (272.0 Ft/Mile 51.5 m/Km)
Garmin 620 80 11.302% (596.7 Ft/Mile 113.0 m/Km) 4.3% (228.5 Ft/Mile 43.3 m/Km) 8.7% (457.0 Ft/Mile 86.6 m/Km)
iPhone 4s 62 6.623% (349.7 Ft/Mile 66.2 m/Km) 4.5% (235.6 Ft/Mile 44.6 m/Km) 8.9% (471.3 Ft/Mile 89.3 m/Km)
Polar RC3 GPS 93 5.757% (304.0 Ft/Mile 57.6 m/Km) 4.5% (236.0 Ft/Mile 44.7 m/Km) 8.9% (472.0 Ft/Mile 89.4 m/Km)
Garmin 310XT with Footpod 205 5.573% (294.2 Ft/Mile 55.7 m/Km) 4.2% (219.6 Ft/Mile 41.6 m/Km) 8.3% (439.2 Ft/Mile 83.2 m/Km)
Garmin 310XT no Footpod 124 5.981% (315.8 Ft/Mile 59.8 m/Km) 5.4% (285.5 Ft/Mile 54.1 m/Km) 10.8% (571.0 Ft/Mile 108.2 m/Km)
Garmin 610 63 6.569% (346.8 Ft/Mile 65.7 m/Km) 2.8% (150.3 Ft/Mile 28.5 m/Km) 5.7% (300.6 Ft/Mile 56.9 m/Km)
Garmin 910XT with Footpod 43 5.117% (270.2 Ft/Mile 51.2 m/Km) 2.6% (135.3 Ft/Mile 25.6 m/Km) 5.1% (270.7 Ft/Mile 51.3 m/Km)
All 805 6.868% (362.6 Ft/Mile 68.7 m/Km) 5.1% (270.0 Ft/Mile 51.1 m/Km) 10.2% (539.9 Ft/Mile 102.3 m/Km)
Straight Garmin 10 162 5.848% (308.8 Ft/Mile 58.5 m/Km) 2.8% (147.8 Ft/Mile 28.0 m/Km) 5.6% (295.7 Ft/Mile 56.0 m/Km)
Garmin 205 196 0.483% (25.5 Ft/Mile 4.8 m/Km) 1.9% (99.9 Ft/Mile 18.9 m/Km) 3.8% (199.9 Ft/Mile 37.9 m/Km)
Garmin 620 228 5.369% (283.5 Ft/Mile 53.7 m/Km) 2.6% (136.2 Ft/Mile 25.8 m/Km) 5.2% (272.5 Ft/Mile 51.6 m/Km)
iPhone 4s 164 2.034% (107.4 Ft/Mile 20.3 m/Km) 2.9% (152.2 Ft/Mile 28.8 m/Km) 5.8% (304.4 Ft/Mile 57.6 m/Km)
Polar RC3 GPS 239 0.436% (23.0 Ft/Mile 4.4 m/Km) 2.7% (142.4 Ft/Mile 27.0 m/Km) 5.4% (284.8 Ft/Mile 53.9 m/Km)
Garmin 310XT with Footpod 697 0.762% (40.2 Ft/Mile 7.6 m/Km) 2.7% (142.7 Ft/Mile 27.0 m/Km) 5.4% (285.4 Ft/Mile 54.0 m/Km)
Garmin 310XT no Footpod 326 1.677% (88.5 Ft/Mile 16.8 m/Km) 3.2% (169.3 Ft/Mile 32.1 m/Km) 6.4% (338.7 Ft/Mile 64.1 m/Km)
Garmin 610 168 0.940% (49.6 Ft/Mile 9.4 m/Km) 3.0% (160.0 Ft/Mile 30.3 m/Km) 6.1% (320.0 Ft/Mile 60.6 m/Km)
Garmin 910XT with Footpod 122 0.291% (15.4 Ft/Mile 2.9 m/Km) 2.0% (107.3 Ft/Mile 20.3 m/Km) 4.1% (214.6 Ft/Mile 40.7 m/Km)
All 2302 1.727% (91.2 Ft/Mile 17.3 m/Km) 3.3% (172.5 Ft/Mile 32.7 m/Km) 6.5% (345.1 Ft/Mile 65.4 m/Km)
Power Line Garmin 10 129 8.278% (437.1 Ft/Mile 82.8 m/Km) 3.7% (196.1 Ft/Mile 37.1 m/Km) 7.4% (392.1 Ft/Mile 74.3 m/Km)
Garmin 205 127 1.395% (73.7 Ft/Mile 14.0 m/Km) 2.3% (122.5 Ft/Mile 23.2 m/Km) 4.6% (245.1 Ft/Mile 46.4 m/Km)
Garmin 620 162 7.860% (415.0 Ft/Mile 78.6 m/Km) 2.8% (148.7 Ft/Mile 28.2 m/Km) 5.6% (297.5 Ft/Mile 56.3 m/Km)
iPhone 4s 110 2.560% (135.2 Ft/Mile 25.6 m/Km) 2.9% (152.7 Ft/Mile 28.9 m/Km) 5.8% (305.3 Ft/Mile 57.8 m/Km)
Polar RC3 GPS 171 1.964% (103.7 Ft/Mile 19.6 m/Km) 3.6% (188.8 Ft/Mile 35.8 m/Km) 7.2% (377.6 Ft/Mile 71.5 m/Km)
Garmin 310XT with Footpod 515 2.566% (135.5 Ft/Mile 25.7 m/Km) 3.5% (183.2 Ft/Mile 34.7 m/Km) 6.9% (366.5 Ft/Mile 69.4 m/Km)
Garmin 310XT no Footpod 229 3.360% (177.4 Ft/Mile 33.6 m/Km) 3.6% (187.7 Ft/Mile 35.5 m/Km) 7.1% (375.3 Ft/Mile 71.1 m/Km)
Garmin 610 119 3.757% (198.4 Ft/Mile 37.6 m/Km) 2.5% (132.5 Ft/Mile 25.1 m/Km) 5.0% (265.0 Ft/Mile 50.2 m/Km)
Garmin 910XT with Footpod 90 2.101% (110.9 Ft/Mile 21.0 m/Km) 2.4% (127.2 Ft/Mile 24.1 m/Km) 4.8% (254.4 Ft/Mile 48.2 m/Km)
All 1652 3.549% (187.4 Ft/Mile 35.5 m/Km) 3.9% (205.2 Ft/Mile 38.9 m/Km) 7.8% (410.3 Ft/Mile 77.7 m/Km)
Mixed Garmin 10 1020 8.536% (450.7 Ft/Mile 85.4 m/Km) 4.5% (239.8 Ft/Mile 45.4 m/Km) 9.1% (479.7 Ft/Mile 90.8 m/Km)
Garmin 205 1122 1.422% (75.1 Ft/Mile 14.2 m/Km) 3.5% (185.3 Ft/Mile 35.1 m/Km) 7.0% (370.6 Ft/Mile 70.2 m/Km)
Garmin 620 1308 7.293% (385.1 Ft/Mile 72.9 m/Km) 4.2% (220.1 Ft/Mile 41.7 m/Km) 8.3% (440.2 Ft/Mile 83.4 m/Km)
iPhone 4s 951 3.175% (167.6 Ft/Mile 31.7 m/Km) 3.7% (192.9 Ft/Mile 36.5 m/Km) 7.3% (385.8 Ft/Mile 73.1 m/Km)
Polar RC3 GPS 1433 2.413% (127.4 Ft/Mile 24.1 m/Km) 4.6% (243.6 Ft/Mile 46.1 m/Km) 9.2% (487.1 Ft/Mile 92.3 m/Km)
Garmin 310XT with Footpod 3907 2.430% (128.3 Ft/Mile 24.3 m/Km) 3.7% (195.1 Ft/Mile 37.0 m/Km) 7.4% (390.2 Ft/Mile 73.9 m/Km)
Garmin 310XT no Footpod 1945 3.003% (158.5 Ft/Mile 30.0 m/Km) 4.2% (222.6 Ft/Mile 42.2 m/Km) 8.4% (445.1 Ft/Mile 84.3 m/Km)
Garmin 610 1004 3.488% (184.2 Ft/Mile 34.9 m/Km) 3.6% (189.9 Ft/Mile 36.0 m/Km) 7.2% (379.7 Ft/Mile 71.9 m/Km)
Garmin 910XT with Footpod 725 1.835% (96.9 Ft/Mile 18.3 m/Km) 3.0% (161.0 Ft/Mile 30.5 m/Km) 6.1% (322.0 Ft/Mile 61.0 m/Km)
All 13415 3.465% (183.0 Ft/Mile 34.7 m/Km) 4.5% (235.4 Ft/Mile 44.6 m/Km) 8.9% (470.8 Ft/Mile 89.2 m/Km)