| Alphabetized by trail abbreviation | Alphabetized by trail name | ||
| ACT | Annapurna Circuit Trail, Nepal | ATT | Able-Tasman Track, NZ |
| ADT | American Discovery Trail, DE-CA | ALT | Allegheny Trail, WV |
| ALT | Allegheny Trail, WV | ADT | American Discovery Trail, DE-CA |
| AND | Length of the Andes, SA | ACT | Annapurna Circuit Trail, Nepal |
| ART | Art Loeb Trail, NC | AT | Appalachian Trail, ME-GA |
| AT | Appalachian Trail, ME-GA | AZT | Arizona Trail, AZ |
| ATT | Able-Tasman Track, NZ | ART | Art Loeb Trail, NC |
| AZT | Arizona Trail, AZ | BRT | Bartram Trail, NC |
| BAT | Batona Trail, NJ | BAT | Batona Trail, NJ |
| BAY | Bay Circuit Trail, MA | BAY | Bay Circuit Trail, MA |
| BBT | Big Blue Trail, PA | BMT | Benton MacKaye Trail, GA |
| BFT | Black Forest Trail, PA | CFL | Big 360, FL |
| BMT | Benton MacKaye Trail, GA | BBT | Big Blue Trail, PA |
| BNRT | Buffalo National River Trail, AR | BFT | Black Forest Trail, PA |
| BP | Bucktail Path, PA | BT | Bruce Trail, Canada |
| BRT | Bartram Trail, NC | BUT | Buckeye Trail, OH |
| BT | Bruce Trail, Canada | BP | Bucktail Path, PA |
| BUT | Buckeye Trail, OH | BNRT | Buffalo National River Trail, AR |
| CAT | Catoctin Trail, MD | CO | C&O Canal Towpath, MD |
| CCW | Coast-to-Coast Walk, England | CDW | Calderdale Way, England |
| CDT | Continental Divide Trail, NM-MT | CHBT | Cape Hatteras Beach Trail, NC |
| CDW | Calderdale Way, England | CAT | Catoctin Trail, MD |
| CEN | Centennial Trail, SD | CEN | Centennial Trail, SD |
| CFL | Big 360, FL | CHL | Chilkoot Trail, NA |
| CHBT | Cape Hatteras Beach Trail, NC | CKT | Chuck Keiper Trail, PA |
| CHL | Chilkoot Trail, NA | CLW | Cleveland Way, England |
| CI | Cumberland Trail, TN | CTC | Coast to Coast, DE-CA |
| CKT | Chuck Keiper Trail, PA | CCW | Coast-to-Coast Walk, England |
| CLW | Cleveland Way, England | COH | Cohos Trail, NH |
| CO | C&O Canal Towpath, MD | COL | Colorado Trail, CO |
| COH | Cohos Trail, NH | COT | Conestoga Trail, PA |
| COL | Colorado Trail, CO | CDT | Continental Divide Trail, NM-MT |
| COT | Conestoga Trail, PA | CW | Cotswold Way, England |
| CRT | Cross Rivendell Trail, VT-NH | CRT | Cross Rivendell Trail, VT-NH |
| CS | El Camino de Santiago, Spain | CI | Cumberland Trail, TN |
| CTC | Coast to Coast, DE-CA | CUW | Cumbrian Way, England |
| CUW | Cumbrian Way, England | DW | Dales Way, England |
| CW | Cotswold Way, England | DIW | Dingle Way, Ireland |
| DHT | Donut Hole Trail, PA | DHT | Donut Hole Trail, PA |
| DIW | Dingle Way, Ireland | DRT | Duncan Ridge Trail, GA |
| DRT | Duncan Ridge Trail, GA | ECST | East Coast Trail, Canada |
| DW | Dales Way, England | ECT | Eastern Continental Trail, NA |
| ECST | East Coast Trail, Canada | CS | El Camino de Santiago, Spain |
| ECT | Eastern Continental Trail, NA | ESC | Escalante Canyon, UT |
| ESC | Escalante Canyon, UT | ET | Everest Trek, Nepal |
| ET | Everest Trek, Nepal | FLT | Finger Lakes Trail, NY |
| FHT | Foothills Trail, SC | FT | Florida Trail, FL |
| FLT | Finger Lakes Trail, NY | FHT | Foothills Trail, SC |
| FT | Florida Trail, FL | GEA | Grande Excursion Apenenica, Italy |
| GDT | Great Divide Trail, Canada | GR20 | Grande Randonee Corsica, Corsica |
| GEA | Grande Excursion Apenenica, Italy | GR10 | Grande Randonnée Pyrenees, France |
| GR10 | Grande Randonnée Pyrenees, France | GR5 | Grande Route Cinq, Europe |
| GR11 | Spanish Pyrenees Trail, Spain | GDT | Great Divide Trail, Canada |
| GR20 | Grande Randonee Corsica, Corsica | GSWW | Great South West Walk, Australia |
| GR5 | Grande Route Cinq, Europe | GT | Greenbelt Trail, NY |
| GRT | Greenbrier River Trail, WV | GRT | Greenbrier River Trail, WV |
| GSWW | Great South West Walk, Australia | GTNZ | Greenstone Track, NZ |
| GT | Greenbelt Trail, NY | HWP | Hadrian's Wall Path, England |
| GTNZ | Greenstone Track, NZ | HTNZ | Heaphy Track, NZ |
| HST | High Sierra Trail, CA | HST | High Sierra Trail, CA |
| HT | Horseshoe Trail, PA | HT | Horseshoe Trail, PA |
| HTNZ | Heaphy Track, NZ | ICE | Ice Age Trail, WI |
| HWP | Hadrian's Wall Path, England | IT | Inca Trail, Peru |
| IATSIA | International A.T., NA | IATSIA | International A.T., NA |
| ICE | Ice Age Trail, WI | IMT | Iron Mountain Trail, TN-VA |
| IMT | Iron Mountain Trail, TN-VA | IR | Isle Royale, MI |
| IR | Isle Royale, MI | JMT | John Muir Trail, CA |
| IT | Inca Trail, Peru | KTY | Katy Trail, MO |
| JMT | John Muir Trail, CA | KEK | Kekekabic Trail, MN |
| KEK | Kekekabic Trail, MN | KW | Kerry Way, Ireland |
| KT | Knobstone Trail, IN | KT | Knobstone Trail, IN |
| KTY | Katy Trail, MO | LOST | Lake Okeechobee Scenic Trail, FL |
| KW | Kerry Way, Ireland | LBL | Land Between the Lakes, KY |
| LBL | Land Between the Lakes, KY | LHT | Laurel Highlands, PA |
| LCT | Lost Coast Trail, CA | TMB | Le Tour du Mont Blanc, Europe |
| LHT | Laurel Highlands, PA | AND | Length of the Andes, SA |
| LOST | Lake Okeechobee Scenic Trail, FL | SE | Les Sentiers de L'Estrie, Canada |
| LOT | Loyalsock Trail, PA | LP | Long Path, NY |
| LP | Long Path, NY | LT | Long Trail, VT |
| LT | Long Trail, VT | LCT | Lost Coast Trail, CA |
| LTT | Lost Turkey Trail, PA | LTT | Lost Turkey Trail, PA |
| MDH | Maah Daah Hey, ND | LOT | Loyalsock Trail, PA |
| MDT | Mason-Dixon Trail, PA | MDH | Maah Daah Hey, ND |
| MFSR | Middle Fork Salmon River Trail, ID | MDT | Mason-Dixon Trail, PA |
| MMT | Metacomet-Monadnock Trail, CT-NH | MMT | Metacomet-Monadnock Trail, CT-NH |
| MSG | Monadnock-Sunapee Greenway, NH | MSS | Michigan Shore-to-Shore Trail, MI |
| MSMA | Midstate Trail, MA | MSPA | Mid State Trail, PA |
| MSPA | Mid State Trail, PA | MFSR | Middle Fork Salmon River Trail, ID |
| MSS | Michigan Shore-to-Shore Trail, MI | MSMA | Midstate Trail, MA |
| MT | Milford Track, NZ | MT | Milford Track, NZ |
| NBT | North Bend Trail, WV | MSG | Monadnock-Sunapee Greenway, NH |
| NPT | Northville-Placid Trail , NY | NT | Natchez Trace, MS-TN |
| NST | North-South Trail, RI | NBT | North Bend Trail, WV |
| NT | Natchez Trace, MS-TN | NST | North-South Trail, RI |
| OCH | Oil Creek Hiking Trail, PA | NPT | Northville-Placid Trail , NY |
| ODP | Offa's Dike Path, Wales | OT | Ocala Trail, FL |
| OHT | Ozark Highlands Trail, AR | ODP | Offa's Dike Path, Wales |
| OLP | Old Loggers Path, PA | OCH | Oil Creek Hiking Trail, PA |
| OT | Ocala Trail, FL | OLP | Old Loggers Path, PA |
| OTA | Overland Track, Australia | OUT | Ouachita Trail, AR |
| OTM | Ozark Trail, MO | OTA | Overland Track, Australia |
| OUT | Ouachita Trail, AR | OHT | Ozark Highlands Trail, AR |
| PCH | Pinchot Trail, PA | OTM | Ozark Trail, MO |
| PCP | Pembrokeshire Coast Path, Wales | PCT | Pacific Crest Trail, CA-WA |
| PCT | Pacific Crest Trail, CA-WA | PNT | Pacific Northwest Trail, WA-MT |
| PHR | Pyrenees High Route, Spain | PCP | Pembrokeshire Coast Path, Wales |
| PMT | Pine Mountain Trail, GA | PW | Pennine Way, England |
| PNT | Pacific Northwest Trail, WA-MT | PCH | Pinchot Trail, PA |
| PT | Pinhoti Trail, AL-GA | PMT | Pine Mountain Trail, GA |
| PW | Pennine Way, England | PT | Pinhoti Trail, AL-GA |
| QT | Quehanna Trail, PA | PHR | Pyrenees High Route, Spain |
| RT | Routeburn Track, NZ | QT | Quehanna Trail, PA |
| RTR | River to River Trail, IL | RW | Ridgeway National Trail, England |
| RW | Ridgeway National Trail, England | RTR | River to River Trail, IL |
| SCW | St. Cuthbert's Way, Scotland | RT | Routeburn Track, NZ |
| SDW | St. Downs Way, England | SWCP | S.W. Coast Path, England |
| SE | Les Sentiers de L'Estrie, Canada | ST | Sheltowee Trace, KY-TN |
| SHR | Sierra High Route, CO | SHR | Sierra High Route, CO |
| SHT | Superior Hiking Trail, MI | SUW | Southern Upland Way, Scotland |
| SRK | Sunapee Ragged Kearsage Greenway, NH | GR11 | Spanish Pyrenees Trail, Spain |
| ST | Sheltowee Trace, KY-TN | SCW | St. Cuthbert's Way, Scotland |
| STS | Susquehannock Trail System, PA | SDW | St. Downs Way, England |
| SUW | Southern Upland Way, Scotland | SRK | Sunapee Ragged Kearsage Greenway, NH |
| SWCP | S.W. Coast Path, England | SHT | Superior Hiking Trail, MI |
| TCT | Teton Crest Trail, WY | STS | Susquehannock Trail System, PA |
| TLW | The Lycian Way, Turkey | TRT | Tahoe Rim Trail, CA-NV |
| TMB | Le Tour du Mont Blanc, Europe | TYT | Tahoe-Yosemite Trail, CA |
| TMW | Two Moors Way, England | TCT | Teton Crest Trail, WY |
| TRA | Trans America, USA | TLW | The Lycian Way, Turkey |
| TRT | Tahoe Rim Trail, CA-NV | TSTS | Thunderswamp Trail System, PA |
| TSTS | Thunderswamp Trail System, PA | TRA | Trans America, USA |
| TT | Tuscarora Trail, PA | TT | Tuscarora Trail, PA |
| TYT | Tahoe-Yosemite Trail, CA | TMW | Two Moors Way, England |
| WCT | West Coast Trail, Canada | WPT | Wapack Trail, MA-NH |
| WHW | West Highland Way, Scotland | WCT | West Coast Trail, Canada |
| WPT | Wapack Trail, MA-NH | WHW | West Highland Way, Scotland |
| WR | West Rim, PA | WR | West Rim, PA |
| WS | Western States Trail, CA | WS | Western States Trail, CA |
| WT | Wonderland Trail, WA | WUT | Western Uplands Trail, Canada |
| WUT | Western Uplands Trail, Canada | WW | Wicklow Way, Ireland |
| WW | Wicklow Way, Ireland | WT | Wonderland Trail, WA |
| YY | Yellowstone to Yukon, USA | YY | Yellowstone to Yukon, USA |
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