Photo credits

Real photos under free licenses (public domain, CC0 and Creative Commons BY). Thanks to their authors.

NK Skyrunning 2017
NK Skyrunning 2017
NKBV · CC BY 2.0 · Source
Cropped and color-adjusted for TrailRunDay.
NK Skyrunning 2017 – Zout Fotografie
NK Skyrunning 2017 – Zout Fotografie
NKBV · CC BY 2.0 · Source
Cropped and color-adjusted for TrailRunDay.
BSRF, Transylvania 30K & 50K
BSRF, Transylvania 30K & 50K
Cpl. Kelly Street (U.S. Marine Corps) · Dominio público · Source
Cropped and color-adjusted for TrailRunDay.
La Vall de Cardó desde Santa Agnès
La Vall de Cardó desde Santa Agnès
Capatx · CC BY 4.0 · Source
Cropped and color-adjusted for TrailRunDay.
Núria from Coll Finestrelles
Núria from Coll Finestrelles
Alan Mattingly · CC0 · Source
Cropped and color-adjusted for TrailRunDay.
Forest path at Pragança, Cadaval
Forest path at Pragança, Cadaval
Alexkom000 · CC BY 4.0 · Source
Cropped and color-adjusted for TrailRunDay.
Running in the mud
Running in the mud
rawpixel · CC0 · Source
Cropped and color-adjusted for TrailRunDay.
Fitness Runner
Fitness Runner
Direct Media (StockSnap) · CC0 · Source
Cropped and color-adjusted for TrailRunDay.