Difficulty Index
Our 0–10 difficulty score factors in elevation, hill placement, weather, altitude, turns and surface. See the methodology →
| Marathon | Country | Date | Elev | Difficulty |
|---|---|---|---|---|
| Chicago Marathon | United States | 11 October 2026 | 45m | 1.4/10 |
| Houston Marathon | United States | 17 January 2027 | 65m | 1.4/10 |
| Amsterdam Marathon | Netherlands | 18 October 2026 | 55m | 1.6/10 |
| Valencia Marathon | Spain | 06 December 2026 | 62m | 1.6/10 |
| Berlin Marathon | Germany | 27 September 2026 | 58m | 1.8/10 |
| Munich Marathon | Germany | 11 October 2026 | 90m | 1.8/10 |
| London Marathon | United Kingdom | 25 April 2027 | 85m | 1.9/10 |
| Seoul Marathon | South Korea | 21 March 2027 | 93m | 1.9/10 |
| Budapest Marathon | Hungary | 11 October 2026 | 85m | 1.9/10 |
| Cologne Marathon | Germany | 04 October 2026 | 85m | 2.0/10 |
| Copenhagen Marathon | Denmark | 09 May 2027 | 75m | 2.0/10 |
| Biwako Marathon | Japan | 14 March 2027 | 95m | 2.0/10 |
| Beijing Marathon | China | 18 October 2026 | 100m | 2.1/10 |
| Shanghai Marathon | China | 06 December 2026 | 75m | 2.2/10 |
| Vienna City Marathon | Austria | 18 April 2027 | 110m | 2.2/10 |
| Edinburgh Marathon | United Kingdom | 30 May 2027 | 101m | 2.2/10 |
| Frankfurt Marathon | Germany | 25 October 2026 | 95m | 2.3/10 |
| Manchester Marathon | United Kingdom | 18 April 2027 | 108m | 2.3/10 |
| Nagoya Women's Marathon | Japan | 14 March 2027 | 125m | 2.5/10 |
| Warsaw Marathon | Poland | 27 September 2026 | 105m | 2.6/10 |
| Toronto Waterfront Marathon | Canada | 18 October 2026 | 115m | 2.7/10 |
| Hamburg Marathon | Germany | 25 April 2027 | 135m | 2.8/10 |
| Barcelona Marathon | Spain | 14 March 2027 | 135m | 3.0/10 |
| Buenos Aires Marathon | Argentina | 20 September 2026 | 147m | 3.1/10 |
| Osaka Marathon | Japan | 28 February 2027 | 145m | 3.3/10 |
| Brighton Marathon | United Kingdom | 04 April 2027 | 158m | 3.3/10 |
| Istanbul Marathon | Turkey | 01 November 2026 | 178m | 3.6/10 |
| Taipei Marathon | Taiwan | 20 December 2026 | 94m | 3.8/10 |
| Rome Marathon | Italy | 17 March 2027 | 190m | 3.9/10 |
| Santiago Marathon | Chile | 16 May 2027 | 202m | 4.0/10 |
| Rio de Janeiro Marathon | Brazil | 30 May 2027 | 138m | 4.3/10 |
| Paris Marathon | France | 11 April 2027 | 225m | 4.4/10 |
| Tokyo Marathon | Japan | 01 March 2027 | 195m | 4.4/10 |
| Dublin Marathon | Ireland | 25 October 2026 | 216m | 4.5/10 |
| Prague Marathon | Czech Republic | 02 May 2027 | 215m | 4.5/10 |
| Mumbai Marathon | India | 17 January 2027 | 134m | 4.5/10 |
| Marine Corps Marathon | United States | 25 October 2026 | 220m | 4.8/10 |
| Amazing Thailand Marathon | Thailand | 29 November 2026 | 130m | 4.8/10 |
| Stockholm Marathon | Sweden | 29 May 2027 | 215m | 4.9/10 |
| Honolulu Marathon | United States | 13 December 2026 | 141m | 5.0/10 |
| Singapore Marathon | Singapore | 06 December 2026 | 120m | 5.0/10 |
| Boston Marathon | United States | 19 April 2027 | 265m | 5.1/10 |
| New York City Marathon | United States | 01 November 2026 | 275m | 5.4/10 |
| Athens Marathon | Greece | 08 November 2026 | 335m | 5.5/10 |
| Hong Kong Marathon | Hong Kong | 17 January 2027 | 254m | 5.6/10 |
| Cape Town Marathon | South Africa | 27 May 2027 | 265m | 5.9/10 |
| Los Angeles Marathon | United States | 07 March 2027 | 290m | 6.0/10 |
| Sydney Marathon | Australia | 30 August 2026 | 313m | 6.5/10 |
| Madrid Marathon | Spain | 25 April 2027 | 410m | 6.5/10 |
| Mexico City Marathon | Mexico | 30 August 2026 | 95m | 6.9/10 |
| Big Sur Marathon | United States | 25 April 2027 | 527m | 6.9/10 |
| Oslo Marathon | Norway | 12 September 2026 | 339m | 7.0/10 |
| Helsinki City Marathon | Finland | 08 May 2027 | 360m | 7.3/10 |