Most visitors use Singapore's MRT to zip between attractions. Trevor Kam, a 20-year-old from Singapore, uses it as a route map for marathons on foot. His mission: walk the entire length of every MRT line in the country, each within a single day, and he's inviting strangers to join him.

The self-styled "competitive MRT walker" started on 7th August 2026 with the North East Line, covering 25.1km in just over five hours and racking up more than 30,000 steps. The Circle Line followed later that month — 47.19km in 10 hours, complete with a wrong turn near Bukit Brown Cemetery, a 90-minute toilet stop and a phone-charging pit stop at one-north. His friend Bryan Kow, a culinary student, helps map the routes.

By the Downtown Line walk on 21st August, things had snowballed. Around 50 people showed up at Bukit Panjang at 7am to walk some or all of the roughly 48km route, which took about 16 hours. Participants wore blue to match the line's colour and could hop on or off at any station — no obligation to finish. Then on 4th September, more than 80 people joined his longest trek yet: around 57km along the Thomson-East Coast Line, again taking roughly 16 hours.

The community now lives on a Telegram channel called Sidequests Central, where Trevor posts upcoming walks, and he documents everything on Instagram and TikTok. Next up is the North-South Line on Friday, 25th September 2026, with only the East-West Line left after that to complete the full set.

For travellers, this is a genuinely fun way to see Singapore beyond the usual Orchard Road-Marina Bay circuit. Walking the lines drags you through heartland estates, park connectors and neighbourhoods most tourists never touch — plus it's free. You don't have to commit to a 16-hour sufferfest; joining for a few stations between MRT stops is encouraged. If you're in town around one of these walks, details go up on Trevor's socials and the Telegram channel closer to the date.

Just treat it seriously if you do go long: Trevor himself has finished walks with blisters, aching muscles and sore feet. Bring proper shoes, UV-protective clothing and plenty of water, and be honest about your fitness before attempting a full line in one go. It's also a neat answer to anyone who claims Singapore is boring — apparently you just need to leave the air conditioning behind and start walking.