Long-distance running only the placing is of importance. Other less popular variants such as fell running, trail running, mountain running and tower running combine the challenge of distance with a significant incline or change of elevation as part of the course. Multisport races frequently include endurance running. Triathlon, as defined by the International Triathlon Union, may feature running sections ranging from five kilometres (3.1 mi) to the marathon distance (42.195 kilometres, or 26 miles and 385 yards), depending on the race type. The related sport of duathlon is a combination of cycling and distance running. Previous versions of the modern pentathlon incorporated
How Many Miles to Babylon? (novel) and careful description" to depict the chaotic environment created by war. The novel also includes small abstracts from poetry and songs. The title of the novel is derived from a traditional nursery Rhyme, How Many Miles to Babylon?: <poem> </poem> When re-reviewing the novel in 2011, Philip Womack described the novel as "slim but emotionally hefty." For Womack, it's a poignant retelling of how the First World War erased lines of class, and its emotional toil: "Johnston's novel conveys both the insanity of war and the poignancy of unspoken tenderness." In 1982 it was adapted for television by the BBC,