Underdog (2018)

Underdog is a film about British journalist, father, tea-lover and athlete Damian Hall as he returns to the world's biggest trail race, the 105-mile Ultra-Trail du Mont-Blanc. Against the world's best trail runners, full-time athletes, 10 years younger and without the pressures of supporting a family. He's going to need every ounce of courage, grit, stubbornness to crack the top 10.