World marathon calendar 2023 and 2024
Tokyo Marathon (JPN): 5 March 2023
Los Angeles Marathon (USA): 19 March 2023
Zurich Barcelona Angeles Marathon (ESP): 19 March 2023
Roma Marathon (ITA): 19 March 2023
Paris Marathon (FRA): 2 April 2023
Sao Paulo Marathon (BRA): 2 April 2023
Rotterdam Marathon (HOL): 15 April 2023
Zaragoza Marathon (ESP): 16 April 2023
Boston Marathon (EEUU): 17 April 2023
Hamburg Marathon (ALE): 23 April 2023
London Marathon (ENG): 23 April 2023
Madrid Marathon (ESP): 23 April 2023
Krakow Marathon (POL): 23 April 2023
Vancouver Marathon (CAN): 7 May 2023
Prague Marathon (CZE): 7 May 2023
China Marathon : 16-22 May 2023
Lima Marathon (PER): 21 May 2023
Edinburgh Marathon (SCO): 28 May 2023
Calgary Marathon (CAN): 28 May 2023
Rapa Nui Marathon (CHL): 4 May 2023
Stockholm Marathon (SWE): 3 June 2023
Cork Marathon (IRL): 4 June 2023
Rio de Janeiro Marathon (BRA): 11 June 2023
Midnight Sun Marathon(GRL): 17 June 2023
The Big five Marathon (Sudáfrica): 17 June 2023
Waterford Viking Marathon (IRL): 25 June 2023
Mexico Marathon: 27 August 2023
Sydney Marathon (AUS): 16 September 2023
Moscow Marathon (RUS): 17 September 2023
Buenos Aires Marathon (ARG): 24 September 2023
Berlin Marathon (ALE): 24 September 2023
Warsaw Marathon (POL): 24 September 2023
Lisbon Marathon (POR): 8 October 2023
Munich Maraton (ALE): 8 October 2023
Chicago Marathon (EEUU): 8 October 2023
Toronto Marathon (CAN): 15 October 2023
Venice Marathon (ITA): 22 October 2023
Marine Corps Marathon (EEUU): 29 October 2023
Dublin Marathon (IRL): 29 October 2023
Yokohama Marathon (JPN): 29 October 2023
New York Marathon (USA): 5 November 2023
Porto Marathon (POR): 5 November 2023
Panama International Marathon: 26 November 2023
Valencia Marathon (ESP): 3 December 2023
Honolulu Marathon (USA): 10 December 2023 
Walt Disney World Marathon (EE. UU.): 7 January 2024
Hong Kong Marathon: 11 February 2024 (not confirmed yet)
Sevilla Marathon (ESP): 18 February 2024
Osaka Marathon (JPN): 25 February 2024 (not confirmed yet)
Running Calendar 2023
You can also see:
HALF MARATHONS CALENDAR UNITED STATES 2023