The cross-country run, which he claims has not been licensed by authorities, would violate traffic rules and could pose traffic safety risks, Hai elaborated on why he was seeking a ban on this solo race. Photo: SuppliedIf Long wanted to run a solo ultramarathon, he would not need to seek authorities’ permission, Hung said. Races considered as legitimately organized must be approved by road traffic management authorities before taking place to ensure public traffic safety. Currently, there is no legal framework for solo running races on public roads. Hence, a solo runner running on the roadside is similar to a pedestrian who must adhere to the law on road traffic.