Waking up early for a run sounds easy in theory, but by the third day, it can become difficult to keep going. HDOR 100 Days of Running aims to solve exactly this problem, and registrations for its 2026 edition opened on National Sports Day, 29 August.
Procam International, the organisation behind the Tata Mumbai Marathon and the Vedanta Delhi Half Marathon, has relaunched HDOR with a bigger platform, a virtual fitness buddy, and prize money worth Rs 10 lakh for people who stay consistent.
If you have ever tried to build a workout habit and failed, this challenge is designed around that exact problem. You do not have to be a runner from day one. The idea is simply to stay active for 100 days, in whatever way works for you.
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What Is HDOR 100 Days of Running
HDOR stands for Hundred Days Of Running. It is a fitness movement that has been running for 11 years and is now being scaled up under Procam’s umbrella. The idea is simple but requires discipline : stay active for 100 days and turn that consistency into a long-term habit.
Unlike a race that finishes in a few hours, HDOR is a long-term challenge. Participants can run, walk, cycle, or take part in a duathlon. The format is flexible enough for a college student, a working parent, or a senior citizen to participate in their own way.
Vivek Singh, Joint Managing Director at Procam International, said the idea behind the relaunch is not just about running. It is about using 100 days of movement to build a habit that continues even after the challenge ends.
The Hindi phrase used in the campaign, Mumkin Hai, roughly means “it is possible”. The message is aimed at people who feel that fitness is difficult or out of reach.
HDOR 2026 Registration: Dates, Fees and How It Works
Registrations opened on 29 August 2026 at hdor.com. The 100-day challenge will start on 10 October 2026 and end on 17 January 2027. Entry starts at Rs 599, including GST, making it a relatively affordable programme that runs for around three and a half months.
Once you register, everything is managed through the HDOR app, which is available on both Google Play and the Apple App Store. You can choose your activity, record your progress every day, and connect a compatible smartwatch or fitness band if you already use one to track your workouts.
The daily targets are also quite simple. To count as an active day, you need to complete at least 2.5 km of running or walking, or 8 km of cycling.
You can take up to 15 rest days during the 100-day period. To become an official HDOR finisher, you need to complete the activity on at least 85 of the 100 days.
HDOR Rules: What Counts as a Finish
The HDOR rules are simple once you break them down.
Complete 2.5 km of running or walking, or 8 km of cycling, on any day you want to count as an active day. You can take up to 15 rest days during the full challenge without affecting your finisher status. Complete at least 85 active days out of 100 to become an official finisher and qualify for rewards.
Your progress is tracked through the HDOR app or a connected wearable. So, logging your activity is similar to using a regular fitness app rather than manually maintaining a record.
The programme also includes leaderboards and milestone-based challenges to make the 100-day journey more interesting and keep participants motivated.
Rewards, GoGo the Fitness Buddy and the Bigger Picture
The rewards are not limited to just a finisher certificate. HDOR has rewards worth Rs 10 lakh as part of its leaderboard and milestone system. Participants can also earn badges and get recognition as they progress through the 100 days.
There is also a virtual mascot called GoGo. Described as HDOR’s virtual fitness buddy, GoGo is part of the app and is designed to encourage participants, celebrate small achievements, and make the daily check-in feel less like a routine task.
HDOR also gives participants a chance to take part virtually in three major distance running events.
Through the programme, participants can take part virtually in the Vedanta Delhi Half Marathon 2026, the Tata Steel World 25K Kolkata 2026, and the Tata Mumbai Marathon 2027, without having to travel or qualify separately.
On the community side, The Akshaya Patra Foundation has joined HDOR as its exclusive Community Impact Partner. Participants can choose to turn their fitness journey into support for nutritious school meals, connecting their personal fitness goals with a larger social cause.
Gear Up: What You Need Before Day One
A 100-day fitness streak can be affected by small things. It could be uncomfortable shoes, earbuds that keep falling out, or a phone with nowhere to keep it while running.
You do not need to spend a lot of money on gear. But having the basic things ready before 10 October can make it easier to stay consistent during the first few weeks.
| Gear | Why It Helps | Where to Check |
|---|---|---|
| Running shoes | Proper cushioning can reduce stress on your joints during 100 days of regular activity | Check running shoes on Amazon |
| Fitness smartwatch or band | Tracks distance automatically and can sync with the HDOR app | See fitness watches on Amazon |
| Wireless running earphones | Sweat-resistant earbuds that stay in place are more useful than focusing only on sound quality | Browse running earphones on Amazon |
| Hydration belt or bottle | Useful when daily distances increase, especially during warmer months | View hydration belts on Amazon |
| Anti-chafing running socks | Can help prevent blisters and discomfort that may break your running streak | Look at running socks on Amazon |
Many people who stop fitness challenges do so during the first two weeks, before the routine becomes a habit. HDOR’s format, with 15 built-in rest days and a relatively low daily target, is designed to make it easier to stay consistent during this period.
Whether it actually becomes a long-term habit by January 2027 will depend on one thing: showing up every day you can, even if it is just a 2.5 km walk.