Sources & Photography

Official references, photographer credits and image licenses.

Official event and background sources

Facts were checked for this edition on 17 October 2026. References identify the organizer’s material; they do not imply its approval of our original planning suggestions.

• NYRR: 2026 marathon calendar
• NYRR: marathon course and runner guide
• NYRR: TCS New York City Marathon
• B.A.A.: Boston Marathon
• B.A.A.: qualifying and 2027 registration status
• Chicago Marathon: 2027 applications
• Chicago Marathon: participant information
• McCourt Foundation: 2027 Los Angeles Marathon course
• McCourt Foundation: Los Angeles Marathon FAQs and rules
• The San Francisco Marathon: 2027 full marathon
• The San Francisco Marathon: expo and packet pickup
• Marine Corps Marathon: 2026 event and registration policies
• Marine Corps Marathon: Before You Go
• Marine Corps Marathon: Race Day
• Abbott World Marathon Majors: member races
• Abbott World Marathon Majors: Cape Town joins the series

Photography credits

The original photograph-led articles use individually credited reference photographs hosted on this website. Later guides use original diagrams or worksheets, as identified on each page. Unless explicitly identified otherwise, the photograph illustrates a setting or preparation topic and does not depict the named future edition. The photos are not provided as downloadable stock collections.

• Eddson Lens — Runners competing in a city road race. · License
• Row Photo — Runners participating in an urban race in Jakarta, Indonesia. · License
• RUN 4 FFWPU — Woman running in a road race in daylight. · License
• CRISTIAN CAMILO ESTRADA — Smiling runners participating in an outdoor road race. · License
• RUN 4 FFWPU — Runners crossing a red suspension bridge during a road race. · License
• Amanuel C — Overhead view of a London road race with spectators. · License
• Yaroslav Shuraev — Runner tying shoelaces on an outdoor track. · License
• Arina Krasnikova — Laptop, notebook and phone on a table. · License
• Vlada Karpovich — Hands packing clothing into a suitcase. · License
• Yusuf Miah — Spectators watching runners on a London street. · License
• Victor Chijioke — Man running on an outdoor athletics track. · License
• RUN 4 FFWPU — Runners smiling during a sunny road race. · License