AT&T on Amtrak: coverage on every route

AT&T has solid on-board coverage on 85% of Amtrak route miles and at least spotty signal on 96%. Best on the Hartford Line (100%); weakest on the Winter Park Express (62%).

Longest AT&T dead zones on Amtrak

Route	Where	Length
Empire Builder	between Whitefish and Libby	69.1 mi
California Zephyr	between Granby and Glenwood Springs	50.4 mi
Southwest Chief	between Flagstaff and Kingman	45.4 mi
Empire Builder	near Essex, MT	41.7 mi
Coast Starlight	between San Luis Obispo and Santa Barbara	28.8 mi
Cardinal	between Staunton and Clifton Forge	28.7 mi
California Zephyr	between Salt Lake City and Elko	28.5 mi
Sunset Limited	between Sanderson and Alpine	27.7 mi
Pacific Surfliner	between Goleta and Surf	27.5 mi
Texas Eagle	between Sanderson and Alpine	23.5 mi

Every route, best to worst for AT&T

Route	Solid	Spotty	Longest dead zone
Hartford Line	100%	0%	—
Keystone Service	100%	0%	—
Hiawatha	99%	1%	—
Valley Flyer	98%	2%	—
Piedmont	98%	2%	—
Acela	98%	2%	1 mi
Saluki	97%	3%	—
Illini	97%	3%	—
Mardi Gras Service	96%	3%	1 mi
Wolverine	96%	3%	1 mi
Lincoln Service	96%	4%	2 mi
Capitol Corridor	96%	4%	1 mi
Gold Runner	95%	5%	—
Blue Water	94%	6%	1 mi
Heartland Flyer	94%	6%	—
Northeast Regional	93%	6%	2 mi
Carolinian	93%	7%	2 mi
Amtrak Cascades	93%	7%	1 mi
Lake Shore Limited	91%	9%	1 mi
Pere Marquette	89%	11%	—
Palmetto	89%	10%	4 mi
Vermonter	88%	7%	17 mi
Silver Meteor	88%	11%	4 mi
Empire Service	87%	13%	1 mi
Maple Leaf	86%	13%	1 mi
Borealis	86%	12%	2 mi
City of New Orleans	86%	14%	2 mi
Crescent	85%	13%	9 mi
Pennsylvanian	85%	12%	4 mi
Illinois Zephyr	85%	15%	—
Carl Sandburg	85%	15%	—
Pacific Surfliner	84%	4%	28 mi
Floridian	84%	11%	13 mi
Downeaster	83%	16%	—
Coast Starlight	83%	10%	29 mi
Auto Train	82%	16%	4 mi
Sunset Limited	82%	12%	28 mi
Cardinal	82%	8%	29 mi
Southwest Chief	81%	12%	45 mi
Ethan Allen Express	80%	18%	1 mi
Texas Eagle	80%	15%	23 mi
Missouri River Runner	80%	19%	2 mi
California Zephyr	76%	15%	50 mi
Empire Builder	75%	15%	69 mi
Adirondack	73%	20%	8 mi
Winter Park Express	62%	23%	7 mi

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