Twilight Ultra Challenge 2021


Fear No Twilight

Bring me to:
Start/End Time           
Conduct of Event       

Notice of Postponement

Due to the COVID-19 situation and the uncertainty as to when events can take place in Singapore, the 10th edition of the Twilight Ultra Challenge, originally scheduled for 15-16 August 2020, will be postponed to 2021 (tentatively scheduled for 14-15 August 2021).  All registrations for the 2020 edition will be automatically rolled over to the 2021 edition.  An email will be sent to all 2020 registrants soon.  Thank you for your support & we hope to see you in 2021.

The Twilight Ultra Challenge

Embark on a magical twilight journey as you challenge your Mind, Body & Soul in the Twilight Ultra Challenge, granting you the freedom to run/walk for as long as you like up to a maximum of 16 hours. Conquer your innermost fears and the twilight by bringing out the best in you.
Fear No Twilight

Is this for me?

Most definitely as long as you are in good health.  It caters to all levels of fitness as it's up to you how long you wish to keep going, up to the maximum duration of 16 hours.  The minimum distance is 5km.
The Twilight Ultra Challenge is a fantastic way to challenge your endurance, improve your self-esteem, train for an endurance event, test your nutrition/hydration strategy, or simply just to have fun with your friends and even make new ones too.


Start: (To be confirmed)14 August 2021 Saturday 7pm 
End: (To be confirmed)15 August 2021 Sunday 11am

NOTE: You can start/stop anytime you wish as long as it's within the event duration
Punggol Waterway Park, situated adjacent to SAFRA Punggol.

The event site is behind Car Park 'B' of Punggol Waterway Park, off Sentul Crescent.

Address: 10 Sentul Crescent, Singapore 828851.

Click HERE to view location on map.


You may arrive anytime from 5.30pm onwards on race day

We recommend coming early to collect your race bib & timing chip.  Coming early gives you more time to prepare yourself/your items at the race site.

What time does it start and end?

Start - 7pm on 14 August 2021 Saturday

End - by 11am on 15 August 2021 Sunday

NOTE: You may start anytime after the official start time but you must finish by the cutoff time.  You can stop at any time before the cutoff time.

How is the Twilight Ultra Challenge being conducted?

It will be a 5km loop on a footpath, where you are free to do as many loops as you wish. There will be a checkpoint at the U-Turn point located at the 2.5km mark.
Why do loops?

By creating the 5km loop on the same footpath, we endeavour to provide a memorable experience for all participants by maximising opportunities of being able to encourage & motivate your friends and fellow participants as you pass by each other. Seeing each other on the course will spur you on to bring out the best in you and brighten up the twilight.


  • An electronic timing system will be in place, provided by Checkpoint Spot.  
  • There will be 2 timing points, 1 at the Start/End of the 5km loop & the other at the 2.5km U-Turn point.
  • Please collect the timing chip at the event site when you collect your bib number tag.
  • Before the race start, please ensure you attach the timing chip to 1 of your ankles using the timing chip strap.  Please see photo below the timing strap & timing chip.
  • Ensure the timing chip is strapped onto your ankle throughout the race duration.  If the timing chip is not on your ankle, your timing will not be captured.
  • At the end of every lap, you may view the on-site monitor/screen at the main event site to check if your lap timing has been captured.  If your timing was not captured, please inform the timing staff immediately so the necessary action can be taken.
  • Please return the timing chip & strap to the timing crew immediately after you have decided to stop the race.  If the timing chip is not returned, the organiser may seek payment of SGD 50 from the participant for the missing timing chip.
  • NOTE: If you think the strap will cause abrasion around your ankle, please apply some form of lubrication around the ankle or wear socks higher than your ankle before you place the strap & timing chip.

5km Main Aid Station(subject to availability & changes):
  • Water
  • Sports Drink
  • Ice
  • Watermelon
  • Banana
  • Hot Water
  • Hot Coffee
  • Cup Noodles
  • Hard Boiled Eggs
  • Potato Chips
  • Bread
  • Nutella
  • Steamed Japanese Sweet Potato
  • Medical/First Aid
  • NOTE: Please BYOB (Bring Your Own Bottle/Cup & leave it at the Main aid station so you can reuse)
2.5km Aid Station (U-Turn point):
  • Water
  • Isotonic drinks
  • Bananas
  • NOTE: Please BYOB (On your 1st loop, please Bring Your Own Bottle/Cup & leave it at the 2.5km U-Turn aid station so you can reuse.  Bring it back with you on your last loop)
NOTE: The 2.5km Aid Station will close at 10.45am on Sunday.  The 5km Main Aid Station will remain open till the end of the race which is 11.00am on Sunday.
Professional Ambulance service will provide safety/first aid/emergency coverage throughout the event.

What if I have Special Needs?

Your race-essential items, also known as Special-Needs items, can be placed at the Main aid station (5km mark).  These items must be packed into your self-provided Special-Needs Bag which will be identified by your bib number written on a piece of tape. 
As part of our effort to preserve the environment, we will not be providing such bags for you. 
Please limit to race-essential items only as limited space is available.  You may consider placing Energy Gels/Bars, Food, Drinks, Sunglasses, Cap, body lubricant, socks, etc..
You may retrieve/re-deposit your Special-Needs Bag anytime you pass by the Main aid station. 

All Special Needs Bags/items must be claimed by 1 hour after the event ends.  Unclaimed bags/items will be disposed after that.


****Cups WILL NOT be provided****

As part of our efforts to preserve the environment through the reduction in usage of cups, please bring your own bottle(s)/cup (BYOB) for hydration purpose.  

BYOB @ Main Event Site

These bottles can be placed at the Main event site (5km mark) together with your special needs bag/items & at the U-turn point (2.5km mark).  Please self-mark your bottle(s) your name & bib number so it doesn't get mixed up with others. 

You can also deposit a cup/bottle which can be used for hot drinks such as coffee/milo so we can reduce usage of foam cups.

All bottles/cups must be claimed by 1 hour after the event ends.  Unclaimed bottles/cups will be disposed after that.

BYOB @ 2.5km U-Turn point

Please deposit your own bottle/cup at the U-Turn point (2.5km Aid Station)

Bring it with you on your 1st lap and place it on the benches at the U-Turn point.  

On your last lap, please bring it back with you or dispose it into the trash bag at the U-Turn point.  

Unclaimed bottles/cups will be disposed after 10.45am on Sunday.
 Personal Finish Bag Deposit Facility(For non-race items)
We will provide complimentary bag deposit facility for your self-provided personal bag.  A tape will be attached to your bag marked with your bib number.  You may retrieve your bag at any point during the event by simply showing your bib to the bag deposit volunteer. 

All bags must be claimed by 1 hour after the event ends.  Unclaimed bags/items will be disposed after that.  

Do refrain from placing valuables inside your bag as we will not be held responsible for any loss and/or damage to your items.
As the event will be conducted in low light condition, we highly recommend you wear bright coloured clothes with reflective material & even a blinker to enhance your visibility to others.
Professional Ambulance service with paramedic equipped with AED, CPR & First Aid certification will be on standby throughout the event.  They will be located at the Main Event Site.  If you encounter any participant who has need for medical attention along the route, please contact the Race Director immediately with details of the situation & location so we can respond quickly.
Please ensure you are in good health and have a reasonable amount of fitness/prepared sufficiently before taking part in this Challenge.  During registration and on event day, you will be required to declare any health condition(s) you have which might affect you during the event.  Please carry your medication (if any) with you during the event, e.g. Asthma Inhaler.
Please have sufficient sleep daily, starting 1 week prior to the event.  This will help reduce fatigue during the event.
If there is lightning/adverse weather before or during the event, the organiser will delay the start or halt the event temporarily until the bad weather has subsided.  In the unfortunate situation where there is bad weather throughout the event duration, the organiser will have to cancel the event without a refund of the event entry fee.
More safety information are provided at Event Day page.
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