GPS Accuracy-statistics

Device	Count	Accuracy (Combined)	Trueness (Average Distance Error)	Standard Deviation (From mean)	Standard Deviation (From true)	Repeatability	Pace Error (95%)		Distance Error
							(from 9:00 min/mile)	(from 5:30 min/Km)	(20 miles)	(30 Km)
Footpod (calibrated)	3255	1.79% (94.6 Ft/Mile, 17.9 m/Km)	0.19% (9.8 Ft/Mile, 1.9 m/Km)	2.52% (133.0 Ft/Mile, 25.2 m/Km)	2.53% (133.4 Ft/Mile, 25.3 m/Km)	2.45% (129.2 Ft/Mile, 24.5 m/Km)	0:27	0:17	0.04	0.06
Polar V800	1964	1.87% (98.8 Ft/Mile, 18.7 m/Km)	0.29% (15.1 Ft/Mile, 2.9 m/Km)	2.62% (138.1 Ft/Mile, 26.2 m/Km)	2.63% (138.9 Ft/Mile, 26.3 m/Km)	1.94% (102.3 Ft/Mile, 19.4 m/Km)	0:28	0:17	0.06	0.09
Suunto Ambit3 Run	1261	2.08% (110.1 Ft/Mile, 20.8 m/Km)	0.44% (23.2 Ft/Mile, 4.4 m/Km)	2.88% (152.1 Ft/Mile, 28.8 m/Km)	2.92% (153.9 Ft/Mile, 29.2 m/Km)	2.17% (114.8 Ft/Mile, 21.7 m/Km)	0:31	0:19	0.09	0.13
iPhone 5s	513	2.09% (110.4 Ft/Mile, 20.9 m/Km)	0.30% (15.8 Ft/Mile, 3.0 m/Km)	2.93% (154.5 Ft/Mile, 29.3 m/Km)	2.94% (155.3 Ft/Mile, 29.4 m/Km)	2.35% (124.2 Ft/Mile, 23.5 m/Km)	0:32	0:19	0.06	0.09
Garmin 205	1152	2.36% (124.5 Ft/Mile, 23.6 m/Km)	0.34% (18.1 Ft/Mile, 3.4 m/Km)	3.30% (174.1 Ft/Mile, 33.0 m/Km)	3.32% (175.1 Ft/Mile, 33.2 m/Km)	2.97% (156.6 Ft/Mile, 29.7 m/Km)	0:36	0:22	0.07	0.10
Suunto Ambit2 R 2.0.11	1025	2.41% (127.4 Ft/Mile, 24.1 m/Km)	1.49% (78.8 Ft/Mile, 14.9 m/Km)	2.67% (140.9 Ft/Mile, 26.7 m/Km)	3.07% (162.0 Ft/Mile, 30.7 m/Km)	2.22% (117.5 Ft/Mile, 22.2 m/Km)	0:33	0:20	0.30	0.45
Garmin 910XT with Footpod	695	2.47% (130.4 Ft/Mile, 24.7 m/Km)	1.23% (64.9 Ft/Mile, 12.3 m/Km)	3.01% (159.1 Ft/Mile, 30.1 m/Km)	3.27% (172.5 Ft/Mile, 32.7 m/Km)	2.41% (127.1 Ft/Mile, 24.1 m/Km)	0:35	0:22	0.25	0.37
iPhone 4s	945	2.51% (132.4 Ft/Mile, 25.1 m/Km)	1.01% (53.6 Ft/Mile, 10.1 m/Km)	3.24% (171.0 Ft/Mile, 32.4 m/Km)	3.40% (179.5 Ft/Mile, 34.0 m/Km)	2.83% (149.2 Ft/Mile, 28.3 m/Km)	0:37	0:22	0.20	0.30
iPhone 5s (Alt)	656	2.53% (133.7 Ft/Mile, 25.3 m/Km)	1.16% (61.4 Ft/Mile, 11.6 m/Km)	3.17% (167.4 Ft/Mile, 31.7 m/Km)	3.39% (178.9 Ft/Mile, 33.9 m/Km)	2.52% (133.1 Ft/Mile, 25.2 m/Km)	0:37	0:22	0.23	0.35
Garmin 310XT with Footpod	3255	2.55% (134.5 Ft/Mile, 25.5 m/Km)	0.59% (31.0 Ft/Mile, 5.9 m/Km)	3.51% (185.1 Ft/Mile, 35.1 m/Km)	3.56% (187.7 Ft/Mile, 35.6 m/Km)	3.03% (159.8 Ft/Mile, 30.3 m/Km)	0:38	0:23	0.12	0.18
Leikr	650	2.71% (143.3 Ft/Mile, 27.1 m/Km)	1.12% (59.1 Ft/Mile, 11.2 m/Km)	3.49% (184.2 Ft/Mile, 34.9 m/Km)	3.67% (193.9 Ft/Mile, 36.7 m/Km)	2.84% (150.1 Ft/Mile, 28.4 m/Km)	0:40	0:24	0.22	0.34
Garmin 610	997	2.75% (145.1 Ft/Mile, 27.5 m/Km)	1.66% (87.5 Ft/Mile, 16.6 m/Km)	3.08% (162.8 Ft/Mile, 30.8 m/Km)	3.51% (185.6 Ft/Mile, 35.1 m/Km)	2.29% (121.0 Ft/Mile, 22.9 m/Km)	0:38	0:23	0.33	0.50
Garmin 620 (3.30)	1039	2.93% (154.7 Ft/Mile, 29.3 m/Km)	1.75% (92.5 Ft/Mile, 17.5 m/Km)	3.30% (174.4 Ft/Mile, 33.0 m/Km)	3.76% (198.3 Ft/Mile, 37.6 m/Km)	2.79% (147.3 Ft/Mile, 27.9 m/Km)	0:41	0:25	0.35	0.53
Garmin 310XT no Footpod	1544	3.00% (158.2 Ft/Mile, 30.0 m/Km)	0.71% (37.2 Ft/Mile, 7.1 m/Km)	4.12% (217.4 Ft/Mile, 41.2 m/Km)	4.18% (220.6 Ft/Mile, 41.8 m/Km)	3.81% (201.0 Ft/Mile, 38.1 m/Km)	0:45	0:28	0.14	0.21
Suunto Ambit2 R 2.0.7	1023	3.08% (162.5 Ft/Mile, 30.8 m/Km)	1.03% (54.6 Ft/Mile, 10.3 m/Km)	4.09% (216.2 Ft/Mile, 40.9 m/Km)	4.23% (223.2 Ft/Mile, 42.3 m/Km)	2.80% (147.6 Ft/Mile, 28.0 m/Km)	0:46	0:28	0.21	0.31
Samsung Galaxy S3	834	3.19% (168.2 Ft/Mile, 31.9 m/Km)	1.38% (73.1 Ft/Mile, 13.8 m/Km)	4.05% (213.6 Ft/Mile, 40.5 m/Km)	4.29% (226.4 Ft/Mile, 42.9 m/Km)	3.01% (158.8 Ft/Mile, 30.1 m/Km)	0:46	0:28	0.28	0.42
Garmin 920XT	858	3.39% (179.1 Ft/Mile, 33.9 m/Km)	2.51% (132.4 Ft/Mile, 25.1 m/Km)	3.19% (168.4 Ft/Mile, 31.9 m/Km)	4.09% (216.0 Ft/Mile, 40.9 m/Km)	2.48% (131.1 Ft/Mile, 24.8 m/Km)	0:44	0:27	0.50	0.75
TomTom Cardio Runner (1.8.42)	759	3.44% (181.7 Ft/Mile, 34.4 m/Km)	2.36% (124.8 Ft/Mile, 23.6 m/Km)	3.50% (185.0 Ft/Mile, 35.0 m/Km)	4.25% (224.6 Ft/Mile, 42.5 m/Km)	2.54% (134.0 Ft/Mile, 25.4 m/Km)	0:46	0:28	0.47	0.71
Footpod (uncalibrated)	3255	3.69% (194.6 Ft/Mile, 36.9 m/Km)	2.36% (124.4 Ft/Mile, 23.6 m/Km)	4.00% (211.2 Ft/Mile, 40.0 m/Km)	4.65% (245.5 Ft/Mile, 46.5 m/Km)	3.95% (208.6 Ft/Mile, 39.5 m/Km)	0:50	0:31	0.47	0.71
Garmin 225	855	3.75% (198.1 Ft/Mile, 37.5 m/Km)	2.67% (141.1 Ft/Mile, 26.7 m/Km)	3.68% (194.4 Ft/Mile, 36.8 m/Km)	4.58% (242.0 Ft/Mile, 45.8 m/Km)	2.87% (151.7 Ft/Mile, 28.7 m/Km)	0:49	0:30	0.53	0.80
Garmin Fenix 3	1013	3.76% (198.6 Ft/Mile, 37.6 m/Km)	2.45% (129.3 Ft/Mile, 24.5 m/Km)	4.01% (211.8 Ft/Mile, 40.1 m/Km)	4.72% (249.3 Ft/Mile, 47.2 m/Km)	3.22% (169.8 Ft/Mile, 32.2 m/Km)	0:51	0:31	0.49	0.73
Garmin Epix with GLONAS+WAAS	587	3.81% (201.3 Ft/Mile, 38.1 m/Km)	2.58% (136.3 Ft/Mile, 25.8 m/Km)	3.92% (206.8 Ft/Mile, 39.2 m/Km)	4.73% (249.9 Ft/Mile, 47.3 m/Km)	2.59% (136.8 Ft/Mile, 25.9 m/Km)	0:51	0:31	0.52	0.77
Garmin Epix with WAAS	505	3.82% (201.9 Ft/Mile, 38.2 m/Km)	2.28% (120.3 Ft/Mile, 22.8 m/Km)	4.30% (227.1 Ft/Mile, 43.0 m/Km)	4.90% (259.0 Ft/Mile, 49.0 m/Km)	3.34% (176.2 Ft/Mile, 33.4 m/Km)	0:53	0:32	0.46	0.68
Polar RC3 GPS	1099	3.94% (208.3 Ft/Mile, 39.4 m/Km)	1.79% (94.4 Ft/Mile, 17.9 m/Km)	4.96% (262.0 Ft/Mile, 49.6 m/Km)	5.28% (279.0 Ft/Mile, 52.8 m/Km)	4.06% (214.2 Ft/Mile, 40.6 m/Km)	0:57	0:35	0.36	0.54
Garmin Fenix 2 (3.30)	1044	4.34% (229.3 Ft/Mile, 43.4 m/Km)	2.77% (146.0 Ft/Mile, 27.7 m/Km)	4.70% (248.3 Ft/Mile, 47.0 m/Km)	5.48% (289.5 Ft/Mile, 54.8 m/Km)	2.84% (150.1 Ft/Mile, 28.4 m/Km)	0:59	0:36	0.55	0.83
TomTom Cardio Runner (1.8.5)	937	4.37% (230.6 Ft/Mile, 43.7 m/Km)	3.37% (177.7 Ft/Mile, 33.7 m/Km)	3.88% (205.1 Ft/Mile, 38.8 m/Km)	5.18% (273.4 Ft/Mile, 51.8 m/Km)	3.27% (172.9 Ft/Mile, 32.7 m/Km)	0:56	0:34	0.67	1.01
Garmin 920XT (GLONASS)	547	4.48% (236.7 Ft/Mile, 44.8 m/Km)	3.39% (179.0 Ft/Mile, 33.9 m/Km)	4.05% (214.0 Ft/Mile, 40.5 m/Km)	5.36% (282.9 Ft/Mile, 53.6 m/Km)	2.84% (150.2 Ft/Mile, 28.4 m/Km)	0:58	0:35	0.68	1.02
Epson SF-810	621	4.59% (242.3 Ft/Mile, 45.9 m/Km)	2.75% (145.1 Ft/Mile, 27.5 m/Km)	5.15% (271.9 Ft/Mile, 51.5 m/Km)	5.88% (310.4 Ft/Mile, 58.8 m/Km)	4.28% (226.1 Ft/Mile, 42.8 m/Km)	1:03	0:39	0.55	0.82
Garmin Epix	592	4.59% (242.5 Ft/Mile, 45.9 m/Km)	3.24% (171.1 Ft/Mile, 32.4 m/Km)	4.54% (239.6 Ft/Mile, 45.4 m/Km)	5.63% (297.3 Ft/Mile, 56.3 m/Km)	3.23% (170.3 Ft/Mile, 32.3 m/Km)	1:01	0:37	0.65	0.97
Garmin Vivoactive	581	4.74% (250.4 Ft/Mile, 47.4 m/Km)	3.70% (195.2 Ft/Mile, 37.0 m/Km)	4.09% (216.2 Ft/Mile, 40.9 m/Km)	5.60% (295.4 Ft/Mile, 56.0 m/Km)	3.01% (158.7 Ft/Mile, 30.1 m/Km)	1:00	0:37	0.74	1.11
Garmin 10	1050	4.95% (261.2 Ft/Mile, 49.5 m/Km)	3.80% (200.7 Ft/Mile, 38.0 m/Km)	4.43% (233.8 Ft/Mile, 44.3 m/Km)	5.87% (310.2 Ft/Mile, 58.7 m/Km)	3.15% (166.3 Ft/Mile, 31.5 m/Km)	1:03	0:39	0.76	1.14
Garmin 235	886	5.08% (268.4 Ft/Mile, 50.8 m/Km)	3.93% (207.3 Ft/Mile, 39.3 m/Km)	4.50% (237.5 Ft/Mile, 45.0 m/Km)	6.02% (318.0 Ft/Mile, 60.2 m/Km)	3.60% (190.1 Ft/Mile, 36.0 m/Km)	1:05	0:40	0.79	1.18
Garmin VivoactiveHR	927	5.10% (269.2 Ft/Mile, 51.0 m/Km)	4.02% (212.3 Ft/Mile, 40.2 m/Km)	4.37% (230.7 Ft/Mile, 43.7 m/Km)	5.99% (316.1 Ft/Mile, 59.9 m/Km)	3.05% (161.0 Ft/Mile, 30.5 m/Km)	1:05	0:40	0.80	1.21
Garmin Fenix 2 (pre-v3.30)	4156	5.14% (271.3 Ft/Mile, 51.4 m/Km)	2.70% (142.3 Ft/Mile, 27.0 m/Km)	6.18% (326.4 Ft/Mile, 61.8 m/Km)	6.75% (356.3 Ft/Mile, 67.5 m/Km)	4.68% (247.2 Ft/Mile, 46.8 m/Km)	1:13	0:45	0.54	0.81
Garmin 620 (pre-v3.30)	2258	5.30% (279.7 Ft/Mile, 53.0 m/Km)	3.49% (184.4 Ft/Mile, 34.9 m/Km)	5.61% (296.5 Ft/Mile, 56.1 m/Km)	6.63% (349.9 Ft/Mile, 66.3 m/Km)	4.92% (260.0 Ft/Mile, 49.2 m/Km)	1:12	0:44	0.70	1.05
Polar M400	1361	5.56% (293.3 Ft/Mile, 55.6 m/Km)	4.27% (225.6 Ft/Mile, 42.7 m/Km)	4.97% (262.6 Ft/Mile, 49.7 m/Km)	6.59% (348.1 Ft/Mile, 65.9 m/Km)	3.46% (182.9 Ft/Mile, 34.6 m/Km)	1:11	0:44	0.85	1.28
Epson SF-510	539	5.67% (299.5 Ft/Mile, 56.7 m/Km)	3.94% (207.9 Ft/Mile, 39.4 m/Km)	5.69% (300.4 Ft/Mile, 56.9 m/Km)	6.99% (369.0 Ft/Mile, 69.9 m/Km)	4.60% (243.0 Ft/Mile, 46.0 m/Km)	1:15	0:46	0.79	1.18
Suunto Spartan Ultra 1.4.6	505	7.79% (411.5 Ft/Mile, 77.9 m/Km)	4.60% (242.6 Ft/Mile, 46.0 m/Km)	8.82% (465.5 Ft/Mile, 88.2 m/Km)	10.02% (529.0 Ft/Mile, 100.2 m/Km)	7.27% (383.8 Ft/Mile, 72.7 m/Km)	1:48	1:06	0.92	1.38