This is a list of notable half marathon races. According to Running Times Magazine, There were approximately 870 half marathons in the United States in 2009.
3 Léguas do Nabão (Tomar, Portugal)
21K Monterrey (Monterrey, Mexico)
21K Nuevo León (Monterrey, Mexico)
Air Force Half Marathon (Dayton, Ohio, USA)
Adana Half Marathon (Adana,Turkey)
Amsterdam Half Marathon (Amsterdam, Netherlands)
Army Half Marathon (Singapore)
Army Run (Ottawa, Canada)
Atlanta Half Marathon (Atlanta, Georgia, USA)
Barrathon (Barra, Scotland)
Bath Half Marathon (Bath, England)
Banja Luka Half Marathon (Banja Luka, Bosnia)
Belgrade Half Marathon (within Belgrade Marathon) (Belgrade, Serbia)
Berlin Half Marathon (Berlin, Germany)
Big Sur Half Marathon (Monterey Bay, California, USA)
Birmingham Half Marathon (Birmingham, England)
Blackmores Sydney Half Marathon (Sydney, NSW, Australia)
Bogotá Half Marathon, (Bogotá, Colombia)
Bournemouth Marathon (Bournemouth, England)
Brass Monkey Half Marathon (York, England)
Brentwood Half (Brentwood, Essex)
Brighton Half Marathon (Brighton, England)
Bristol Half Marathon (Bristol, England)
Brooklyn Half Marathon (Brooklyn, New York, USA)
Budapest Half Marathon (Budapest, Hungary)
Bucharest International Half Marathon (Bucharest, Romania)
Cannonball Run (Greensboro, North Carolina, USA)
Cardiff Half Marathon (Cardiff, Wales)
Chester Half Marathon (Chester)
Chicago Half Marathon (Chicago)
City-Pier-City Loop (the Hague, Netherlands)
City of Norwich Half Marathon (Norwich, England)
Coban International Half Marathon (Cobán, Alta Verapaz, Guatemala)
Colchester Half Marathon (Colchester)
Country Music Half Marathon (Nashville, Tennessee, USA)
Cowtown Half Marathon (Fort Worth, Texas, USA)
Detroit Free Press Marathon (Detroit, Michigan, USA)
Disneyland Half Marathon (Anaheim, California, USA)
Delhi Half Marathon (New Delhi, India)
Dublin Half Marathon (Dublin, Ireland)
Dusseldorf Half Marathon (Dusseldorf, Germany)
Edinburgh Marathon Festival Half Marathon (Edinburgh, Scotland)
Fleet Half Marathon (Fleet, Hampshire, England)
Four Villages Half Marathon (Helsby, England)
Flying Pig Half Marathon (Cincinnati, Ohio, USA)
Freckleton Half Marathon (Freckleton, England)
Göteborgsvarvet (Gothenburg, Sweden)
Great Bentley Half (Great Bentley, England)
Great Eastern Run (Peterborough, England)
Great North Run (Newcastle upon Tyne, England)
Great North West Half Marathon (Blackpool, England)
Great Scottish Run (Glasgow, Scotland)
Great West Run (Exeter, England)
Greifenseelauf (Uster, Switzerland)
Grunty Fen Half Marathon (Witchford, England)
Guernsey Easter Runs Half Marathon (Guernsey, Channel Islands)
Guwahati Half Marathon (Guwahati, India)
Hastings Half Marathon (Hastings, England)
Helsinki City Run (Helsinki, Finland)
IAAF World Road Running Championships (Worldwide)
Istanbul Half Marathon (Istanbul,Turkey)
Knysna Forest Half Marathon (Knysna, South Africa)
Kuldīga Half Marathon (Kuldīga, Latvia)
Kärnten läuft (Klagenfurt, Austria)
Lake Vyrnwy Half Marathon (Lake Vyrnwy, Wales)
Liepāja Half Marathon (Liepāja, Latvia)
Lisbon Half Marathon (Lisbon, Portugal)
Liverpool Half Marathon (Liverpool, England)
Maidenhead Half Marathon (Maidenhead, Berkshire, United Kingdom)
Maidstone Half Marathon (Maidstone, Kent, United Kingdom)
Marabana (Havana, Cuba)
Marathon Oasis de Montreal (Montréal, Quebec, Canada)
Marine Corps Historic Half (Fredericksburg, Virginia, USA)
Marseille-Cassis Classique Internationale (Marseille, France)
Media maratón de Gran Canaria (Las Palmas de Gran Canaria, Spain)
Media maratón "Puertos de Las Palmas" (Las Palmas de Gran Canaria, Spain)
Melbourne Marathon Festival (half marathon) (Melbourne, Australia)
Mezza Maratona di Genova, (Genoa, Italy)
Mumbai Marathon (Mumbai, India)
Naples Half Marathon (Naples, Florida, USA)
New York City Half Marathon (New York, USA)
OneAmerica 500 Festival Mini-Marathon (Indianapolis, Indiana)
Ovar Half-Marathon (Ovar, Portugal)
Oradea Digi City Running Day (Oradea, Romania)
Paddock Wood Half Marathon (Paddock Wood, Kent, UK)
Philadelphia Distance Run (Philadelphia, Pennsylvania, USA)
Polar Night Halfmarathon (Tromsø, Norway)
Potsdamer Schlössermarathon (Potsdam, Germany)
Porto Half Marathon (Porto, Portugal)
Prague Half Marathon (Prague, Czech Republic)
RAK Half Marathon (Ras al-Khaimah, United Arab Emirates)
Reading Half Marathon (Reading, England)
Redcar Half Marathon (Redcar, England)
Riga Marathon (Riga, Latvia)
Robin Hood Marathon (Nottingham, England)
Rock 'n' Roll Arizona (Arizona, USA)
Rock 'n' Roll Brooklyn (Brooklyn, New York, USA)
Rock 'n' Roll Chicago (Chicago, Illinois, USA)
Rock 'n' Roll Denver (Denver, Colorado, USA)
Rock 'n' Roll Dallas (Dallas, Texas, USA)
Rock ‘n’ Roll San Jose Half Marathon (San Jose, California, USA)
Rock 'n' Roll Las Vegas (Las Vegas, Nevada, USA)
Rock 'n' Roll Mardi Gras (New Orleans, Louisiana, USA)
Rock 'n' Roll San Antonio (San Antonio, Texas, USA)
Rock 'n' Roll Seattle (Seattle, Washington, USA)
Rock 'n' Roll Virginia Beach Half Marathon (Virginia Beach, Virginia, USA)
Roma-Ostia (Rome, Italy)
Rotterdam Half Marathon (Rotterdam, Netherlands)
Royal Parks Half Marathon (London, England)
Royal Victoria Marathon (Victoria, British Columbia, Canada)
Run to the Beat (London, England)
San Diego Half Marathon (San Diego, California, USA)
San Francisco Half Marathon (San Francisco, California, USA)
Toronto Waterfront Marathon (Toronto, Ontario, Canada)
Scotiabank Vancouver Half-Marathon (Vancouver, British Columbia, Canada)
St. Louis Half Marathon (St. Louis, Missouri, USA)
Semi-Marathon de Paris (Paris, France)
Sendai International Half Marathon (Sendai, Japan)
Sheffield Half Marathon (Sheffield, England)
Silverstone Half Marathon (Northamptonshire, England)
SMH half marathon (Sydney, NSW, Australia)
Stafford Half Marathon (Stafford, England)
Staten Island Half Marathon (Staten Island, New York, NY)
Stockholm Halvmarathon (Stockholm, Sweden)
Stramilano (Milan, Italy)
Stroud Half Marathon(Stroud, England)
Stuttgarter Zeitung-Lauf (Stuttgart, Germany)
St. Albans Half Marathon (St Albans, England)
Tallinn Rahvajooks (Tallinn, Estonia)
Tarsus Half Marathon (Tarsus, Mersin,Turkey)
Toronto Marathon (Toronto, Canada)
Trabzon Half Marathon (Trabzon,Turkey)
Tunbridge Wells Half Marathon (Tunbridge Wells, England)
Two Oceans Half Marathon (Cape Town, South Africa)
Valmiera Marathon (Valmiera, Latvia)
Vig-Bay Media Maratón Gran Bahía (Vigo, Spain)
Warsaw Half Marathon (Warsaw, Poland)
Waterside Half Marathon (Derry, Northern Ireland)
Wilmslow Half Marathon (Wilmslow, England)
Windsor Half Marathon (Windsor, England)
Wokingham Half Marathon (Wokingham, England)
Woodrow Wilson Bridge Half Marathon (Alexandria, Virginia, USA)
List of half marathon races Wikipedia (Text) CC BY-SA