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 318 8.016% (423.3 Ft/Mile 80.2 m/Km) 4.0% (211.9 Ft/Mile 40.1 m/Km) 8.0% (423.8 Ft/Mile 80.3 m/Km)
Under Bridge 24 3.387% (178.8 Ft/Mile 33.9 m/Km) 3.3% (174.3 Ft/Mile 33.0 m/Km) 6.6% (348.6 Ft/Mile 66.0 m/Km)
Post Bridge 24 11.616% (613.3 Ft/Mile 116.2 m/Km) 3.7% (194.4 Ft/Mile 36.8 m/Km) 7.4% (388.8 Ft/Mile 73.6 m/Km)
Turn Around 23 12.971% (684.9 Ft/Mile 129.7 m/Km) 3.8% (198.2 Ft/Mile 37.5 m/Km) 7.5% (396.5 Ft/Mile 75.1 m/Km)
Straight 62 5.618% (296.6 Ft/Mile 56.2 m/Km) 2.2% (116.3 Ft/Mile 22.0 m/Km) 4.4% (232.6 Ft/Mile 44.0 m/Km)
Power Line 46 7.841% (414.0 Ft/Mile 78.4 m/Km) 3.6% (188.5 Ft/Mile 35.7 m/Km) 7.1% (377.0 Ft/Mile 71.4 m/Km)
Mixed 389 8.246% (435.4 Ft/Mile 82.5 m/Km) 4.4% (230.3 Ft/Mile 43.6 m/Km) 8.7% (460.7 Ft/Mile 87.2 m/Km)
Garmin 205 Normal 903 1.385% (73.1 Ft/Mile 13.9 m/Km) 3.0% (160.4 Ft/Mile 30.4 m/Km) 6.1% (320.8 Ft/Mile 60.8 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 72 3.645% (192.5 Ft/Mile 36.5 m/Km) 2.6% (136.9 Ft/Mile 25.9 m/Km) 5.2% (273.9 Ft/Mile 51.9 m/Km)
Straight 192 0.490% (25.9 Ft/Mile 4.9 m/Km) 1.9% (100.5 Ft/Mile 19.0 m/Km) 3.8% (201.0 Ft/Mile 38.1 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 1107 1.413% (74.6 Ft/Mile 14.1 m/Km) 3.5% (185.8 Ft/Mile 35.2 m/Km) 7.0% (371.6 Ft/Mile 70.4 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 772 2.965% (156.6 Ft/Mile 29.7 m/Km) 3.5% (182.3 Ft/Mile 34.5 m/Km) 6.9% (364.5 Ft/Mile 69.0 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 163 2.049% (108.2 Ft/Mile 20.5 m/Km) 2.9% (152.3 Ft/Mile 28.9 m/Km) 5.8% (304.7 Ft/Mile 57.7 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 947 3.190% (168.5 Ft/Mile 31.9 m/Km) 3.7% (192.8 Ft/Mile 36.5 m/Km) 7.3% (385.6 Ft/Mile 73.0 m/Km)
Polar RC3 GPS Normal 1146 1.542% (81.4 Ft/Mile 15.4 m/Km) 3.7% (197.4 Ft/Mile 37.4 m/Km) 7.5% (394.8 Ft/Mile 74.8 m/Km)
Under Bridge 86 5.612% (296.3 Ft/Mile 56.1 m/Km) 7.8% (412.7 Ft/Mile 78.2 m/Km) 15.6% (825.3 Ft/Mile 156.3 m/Km)
Post Bridge 84 7.399% (390.7 Ft/Mile 74.0 m/Km) 5.0% (263.2 Ft/Mile 49.8 m/Km) 10.0% (526.4 Ft/Mile 99.7 m/Km)
Turn Around 91 5.813% (306.9 Ft/Mile 58.1 m/Km) 4.5% (237.7 Ft/Mile 45.0 m/Km) 9.0% (475.4 Ft/Mile 90.0 m/Km)
Straight 237 0.431% (22.8 Ft/Mile 4.3 m/Km) 2.7% (143.0 Ft/Mile 27.1 m/Km) 5.4% (286.0 Ft/Mile 54.2 m/Km)
Power Line 167 2.030% (107.2 Ft/Mile 20.3 m/Km) 3.6% (188.8 Ft/Mile 35.8 m/Km) 7.2% (377.7 Ft/Mile 71.5 m/Km)
Mixed 1407 2.416% (127.6 Ft/Mile 24.2 m/Km) 4.6% (244.2 Ft/Mile 46.2 m/Km) 9.2% (488.4 Ft/Mile 92.5 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 1589 2.801% (147.9 Ft/Mile 28.0 m/Km) 4.0% (211.1 Ft/Mile 40.0 m/Km) 8.0% (422.2 Ft/Mile 80.0 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 123 6.017% (317.7 Ft/Mile 60.2 m/Km) 5.4% (285.9 Ft/Mile 54.1 m/Km) 10.8% (571.8 Ft/Mile 108.3 m/Km)
Straight 320 1.715% (90.6 Ft/Mile 17.2 m/Km) 3.2% (170.1 Ft/Mile 32.2 m/Km) 6.4% (340.3 Ft/Mile 64.4 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 1928 3.023% (159.6 Ft/Mile 30.2 m/Km) 4.2% (223.0 Ft/Mile 42.2 m/Km) 8.4% (446.0 Ft/Mile 84.5 m/Km)
Garmin 610 Normal 332 3.242% (171.2 Ft/Mile 32.4 m/Km) 3.1% (163.3 Ft/Mile 30.9 m/Km) 6.2% (326.5 Ft/Mile 61.8 m/Km)
Under Bridge 22 2.761% (145.8 Ft/Mile 27.6 m/Km) 3.8% (201.8 Ft/Mile 38.2 m/Km) 7.6% (403.6 Ft/Mile 76.4 m/Km)
Post Bridge 22 4.839% (255.5 Ft/Mile 48.4 m/Km) 2.0% (103.1 Ft/Mile 19.5 m/Km) 3.9% (206.1 Ft/Mile 39.0 m/Km)
Turn Around 26 6.255% (330.3 Ft/Mile 62.6 m/Km) 2.4% (124.7 Ft/Mile 23.6 m/Km) 4.7% (249.4 Ft/Mile 47.2 m/Km)
Straight 69 1.408% (74.3 Ft/Mile 14.1 m/Km) 2.3% (121.8 Ft/Mile 23.1 m/Km) 4.6% (243.6 Ft/Mile 46.1 m/Km)
Power Line 43 4.038% (213.2 Ft/Mile 40.4 m/Km) 2.6% (136.7 Ft/Mile 25.9 m/Km) 5.2% (273.3 Ft/Mile 51.8 m/Km)
Mixed 402 3.498% (184.7 Ft/Mile 35.0 m/Km) 3.2% (166.5 Ft/Mile 31.5 m/Km) 6.3% (332.9 Ft/Mile 63.1 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 10 318 8.016% (423.3 Ft/Mile 80.2 m/Km) 4.0% (211.9 Ft/Mile 40.1 m/Km) 8.0% (423.8 Ft/Mile 80.3 m/Km)
Garmin 205 903 1.385% (73.1 Ft/Mile 13.9 m/Km) 3.0% (160.4 Ft/Mile 30.4 m/Km) 6.1% (320.8 Ft/Mile 60.8 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 772 2.965% (156.6 Ft/Mile 29.7 m/Km) 3.5% (182.3 Ft/Mile 34.5 m/Km) 6.9% (364.5 Ft/Mile 69.0 m/Km)
Polar RC3 GPS 1146 1.542% (81.4 Ft/Mile 15.4 m/Km) 3.7% (197.4 Ft/Mile 37.4 m/Km) 7.5% (394.8 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 1589 2.801% (147.9 Ft/Mile 28.0 m/Km) 4.0% (211.1 Ft/Mile 40.0 m/Km) 8.0% (422.2 Ft/Mile 80.0 m/Km)
Garmin 610 332 3.242% (171.2 Ft/Mile 32.4 m/Km) 3.1% (163.3 Ft/Mile 30.9 m/Km) 6.2% (326.5 Ft/Mile 61.8 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 10059 2.886% (152.4 Ft/Mile 28.9 m/Km) 4.1% (214.0 Ft/Mile 40.5 m/Km) 8.1% (428.0 Ft/Mile 81.1 m/Km)
Under Bridge Garmin 10 24 3.387% (178.8 Ft/Mile 33.9 m/Km) 3.3% (174.3 Ft/Mile 33.0 m/Km) 6.6% (348.6 Ft/Mile 66.0 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 86 5.612% (296.3 Ft/Mile 56.1 m/Km) 7.8% (412.7 Ft/Mile 78.2 m/Km) 15.6% (825.3 Ft/Mile 156.3 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 22 2.761% (145.8 Ft/Mile 27.6 m/Km) 3.8% (201.8 Ft/Mile 38.2 m/Km) 7.6% (403.6 Ft/Mile 76.4 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 691 2.441% (128.9 Ft/Mile 24.4 m/Km) 5.3% (278.3 Ft/Mile 52.7 m/Km) 10.5% (556.7 Ft/Mile 105.4 m/Km)
Post Bridge Garmin 10 24 11.616% (613.3 Ft/Mile 116.2 m/Km) 3.7% (194.4 Ft/Mile 36.8 m/Km) 7.4% (388.8 Ft/Mile 73.6 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 84 7.399% (390.7 Ft/Mile 74.0 m/Km) 5.0% (263.2 Ft/Mile 49.8 m/Km) 10.0% (526.4 Ft/Mile 99.7 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 22 4.839% (255.5 Ft/Mile 48.4 m/Km) 2.0% (103.1 Ft/Mile 19.5 m/Km) 3.9% (206.1 Ft/Mile 39.0 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 645 5.287% (279.1 Ft/Mile 52.9 m/Km) 4.3% (228.5 Ft/Mile 43.3 m/Km) 8.7% (456.9 Ft/Mile 86.5 m/Km)
Turn Around Garmin 10 23 12.971% (684.9 Ft/Mile 129.7 m/Km) 3.8% (198.2 Ft/Mile 37.5 m/Km) 7.5% (396.5 Ft/Mile 75.1 m/Km)
Garmin 205 72 3.645% (192.5 Ft/Mile 36.5 m/Km) 2.6% (136.9 Ft/Mile 25.9 m/Km) 5.2% (273.9 Ft/Mile 51.9 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 91 5.813% (306.9 Ft/Mile 58.1 m/Km) 4.5% (237.7 Ft/Mile 45.0 m/Km) 9.0% (475.4 Ft/Mile 90.0 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 123 6.017% (317.7 Ft/Mile 60.2 m/Km) 5.4% (285.9 Ft/Mile 54.1 m/Km) 10.8% (571.8 Ft/Mile 108.3 m/Km)
Garmin 610 26 6.255% (330.3 Ft/Mile 62.6 m/Km) 2.4% (124.7 Ft/Mile 23.6 m/Km) 4.7% (249.4 Ft/Mile 47.2 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 725 6.441% (340.1 Ft/Mile 64.4 m/Km) 4.8% (253.3 Ft/Mile 48.0 m/Km) 9.6% (506.7 Ft/Mile 96.0 m/Km)
Straight Garmin 10 62 5.618% (296.6 Ft/Mile 56.2 m/Km) 2.2% (116.3 Ft/Mile 22.0 m/Km) 4.4% (232.6 Ft/Mile 44.0 m/Km)
Garmin 205 192 0.490% (25.9 Ft/Mile 4.9 m/Km) 1.9% (100.5 Ft/Mile 19.0 m/Km) 3.8% (201.0 Ft/Mile 38.1 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 163 2.049% (108.2 Ft/Mile 20.5 m/Km) 2.9% (152.3 Ft/Mile 28.9 m/Km) 5.8% (304.7 Ft/Mile 57.7 m/Km)
Polar RC3 GPS 237 0.431% (22.8 Ft/Mile 4.3 m/Km) 2.7% (143.0 Ft/Mile 27.1 m/Km) 5.4% (286.0 Ft/Mile 54.2 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 320 1.715% (90.6 Ft/Mile 17.2 m/Km) 3.2% (170.1 Ft/Mile 32.2 m/Km) 6.4% (340.3 Ft/Mile 64.4 m/Km)
Garmin 610 69 1.408% (74.3 Ft/Mile 14.1 m/Km) 2.3% (121.8 Ft/Mile 23.1 m/Km) 4.6% (243.6 Ft/Mile 46.1 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 2090 1.586% (83.8 Ft/Mile 15.9 m/Km) 3.1% (165.1 Ft/Mile 31.3 m/Km) 6.3% (330.2 Ft/Mile 62.5 m/Km)
Power Line Garmin 10 46 7.841% (414.0 Ft/Mile 78.4 m/Km) 3.6% (188.5 Ft/Mile 35.7 m/Km) 7.1% (377.0 Ft/Mile 71.4 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 167 2.030% (107.2 Ft/Mile 20.3 m/Km) 3.6% (188.8 Ft/Mile 35.8 m/Km) 7.2% (377.7 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 43 4.038% (213.2 Ft/Mile 40.4 m/Km) 2.6% (136.7 Ft/Mile 25.9 m/Km) 5.2% (273.3 Ft/Mile 51.8 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 1489 3.281% (173.2 Ft/Mile 32.8 m/Km) 3.8% (198.5 Ft/Mile 37.6 m/Km) 7.5% (397.1 Ft/Mile 75.2 m/Km)
Mixed Garmin 10 389 8.246% (435.4 Ft/Mile 82.5 m/Km) 4.4% (230.3 Ft/Mile 43.6 m/Km) 8.7% (460.7 Ft/Mile 87.2 m/Km)
Garmin 205 1107 1.413% (74.6 Ft/Mile 14.1 m/Km) 3.5% (185.8 Ft/Mile 35.2 m/Km) 7.0% (371.6 Ft/Mile 70.4 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 947 3.190% (168.5 Ft/Mile 31.9 m/Km) 3.7% (192.8 Ft/Mile 36.5 m/Km) 7.3% (385.6 Ft/Mile 73.0 m/Km)
Polar RC3 GPS 1407 2.416% (127.6 Ft/Mile 24.2 m/Km) 4.6% (244.2 Ft/Mile 46.2 m/Km) 9.2% (488.4 Ft/Mile 92.5 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 1928 3.023% (159.6 Ft/Mile 30.2 m/Km) 4.2% (223.0 Ft/Mile 42.2 m/Km) 8.4% (446.0 Ft/Mile 84.5 m/Km)
Garmin 610 402 3.498% (184.7 Ft/Mile 35.0 m/Km) 3.2% (166.5 Ft/Mile 31.5 m/Km) 6.3% (332.9 Ft/Mile 63.1 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 12120 3.201% (169.0 Ft/Mile 32.0 m/Km) 4.3% (227.5 Ft/Mile 43.1 m/Km) 8.6% (455.0 Ft/Mile 86.2 m/Km)