Isabelle Guillot is a French athlete, born in 1961, who is a specialist in Mountain trail running, who runs for the Blagnac Sporting Athletic Club. She began to run conventional distance running athletic competitions later, in 1986, while still a young teacher. She is Co-author (with Serge Moro) of the book Courir Grandeur Nature.

Prize list

• 32 National team selections for France, 6 National team selections for France in the marathon, semi-marathon and ekiden .
• World Champion of Mountain Trail running in 1989, 1991, 1993 and 1997
• Mountain Trail running champion of Europe in 1996
• World Masters Mountain Running Championships 40-44 age-group in 2004
• Mountain trail running champion of France 14 times from 1989 to 1997, then 1999, 2004, 2005, 2006 and 2007
• France champion of veteran Mountain racing 8 times from 2001 to 2008
• Winner of the National Mountain Running Challenge 6 times from 2003 to 2008
• French champion in the marathon in 1997
• Winner of southwest interregional in cross-country in 2001
• Champion of Midi-Pyrénées in cross-country 2003
• Marvejols-Mende winner in 1997
• Semi-marathon at d'Auch; en 1996  : 1 h 11 min 55 s
• Vice-champion in world mountain racing 1994, 1995 and 1996
• Vice-champion of France 10   km in 1997
• Vice-champion of France in mountain racing in 2000, 2003 and 2008
• Bronze Medal (Team) at European Marathon Championships: 1994
• Bronze medal at the World Trophy Mountain Running Competition in 1988 and 2006.
• Bronze medal at the World Challenge long-distance mountain race in 2004 and 2005.
• Bronze medal at the Mountain Running Championship in France in 2001 and 2002.