KOLKATA
BACKYARD ULTRA
📍 Kolkata, West Bengal | 🗓️ 10 Jan, 2026
Where Culture Loops with Chaos — Welcome to Kolkata’s Backyard Ultra
Get ready for an ultramarathon experience like no other in the heart of the City of Joy. The Kolkata Backyard Ultra is a running loop that starts with your legs and ends in your head. Each hour, runners attempt the same 6.706 KM loop. The twist? You’ve got to be on the start line at the top of every hour — or you're out.
It's quirky. It’s relentless. It’s wrapped in Howrah fog and fueled by street tea. From early morning mist over Maidan to the golden light that hits Victoria Memorial, this Backyard Ultra comes steeped in colonial leftovers, Bengali grit, and unapologetic madness.
CATEGORIES
CHALLENGES
The Original. The Ruthless. The Last One Standing.
Welcome to the purest test of human endurance. Runners take on a 6.706 KM loop every hour, on the hour, until there’s only one left. No finish line. If you're serious about ultrarunning, this is where you come to meet your limit—and then run past it. time.
Eight Hours. Eight Loops. All In.
Perfect for those ready to flirt with the ultra world without diving in completely. Backyard 8 is your stepping stone to discovering mental grit and physical durability. Just enough to leave you wrecked… but wanting more. A community vibe with a serious challenge built in.
A Fun, Fierce Format for Newbies and Juniors.
Backyard 4 is the gateway drug to ultrarunning. Four loops, one per hour—seems simple, but it packs a punch. Designed for first-timers, teens, or the trail-curious, this category celebrates small victories that spark big dreams. Friendly, fun, and still fierce.
About
Backyard Ultra
Born in Tennessee and now taking the world (and India) by storm, the Backyard Ultra is the brainchild of the legendary Lazarus Lake — the same man behind the Barkley Marathons. The format is brutal in its simplicity and elegant in its design: runners must complete one loop of 6.706 kilometers every hour on the hour. Fail to finish the loop in 60 minutes or less, and you're out. Last person running, wins. Why 6.706 kilometers?
Because 24 such loops make exactly 100 miles. And yes, it gets as mentally tough as it is physically challenging.
Rulebook
- Every hour, a new loop starts. All runners must begin at the bell.
- If you don't start the loop on time, you're out.
- If you don’t finish the loop in 60 minutes, you're out.
- You can rest, eat, nap, cry, or do push-ups — but only within your remaining time before the next bell.
- The last runner to complete one more loop than everyone else is declared the winner. Everyone else gets a DNF.