The Singapore City in Nature Challenge 2026 is a 45-day virtual walk-or-run challenge organised by RunSociety, running from 31 October (World Cities Day) to 14 December 2026. Log your kilometres anywhere in Singapore, from the Rail Corridor to your neighbourhood park connector, and every distance stacks towards your milestone.
It is one open challenge with three milestones to chase: 36km (Cross the Island), 150km (Circle the Island) and the 360km Complete the Network, each earning its own e-badge and finisher title. One registration covers all three, with an exclusive recycled-blend event tee included. Entry is from SGD 27.90; register at the official City in Nature website.
