Insomnia 100
Always double-check with the organizer's website! This page may contain affiliate links.
About the race
Riverway Insomnia is a backyard ultra event held at the Riverway Precinct in Townsville. The format requires runners to complete a 4.2 km loop every hour; each lap must be finished before the next hour and laps alternate direction between anti-clockwise and clockwise. The event includes two distance categories conducted overnight and into the following day: 100 km (Insomnia 100 Ultra) and 42 km (Insomnia 42 Marathon). Both distances may be attempted solo or by teams of 2–4, with team members free to run any laps in any sequence provided someone crosses the start on the hour.
A mid-lap timing checkpoint at Turtle Bridge validates completed laps. Winners are determined by lowest aggregated time across all completed laps within each category. Race bibs must be worn for every lap; lost bibs result in DNF for subsequent laps. A race belt is available at registration for a fee. Physio support is provided at scheduled intervals. Live results update after each lap via the event portal.
The recovery area supports gazebos, tents, chairs and is fenced; pegs or stakes in the grass are not allowed. There is no event power so participants should bring battery banks and headlamps. Participants must carry a phone during night laps, avoid swimming in the lagoon, and follow a strict leave-no-trace policy. Sun protection is advised due to high UV. Visit the organization's website for the most recent information.
