Phuket 100K Ultra Marathon: Thailand’s Ultimate Coastal Challenge

Get ready for one of the most scenic and challenging endurance events in Southeast Asia — the Phuket 100K Ultra Marathon. Returning for its third year on Saturday, 7 June 2025, this event invites runners from around the globe to test their limits under the tropical sun of Phuket, Thailand.

With distances of 100 km, 60 km, and 50 km, the Phuket 100K Ultra Marathon is more than a race — it’s an adventure through quiet coastal roads, lush forests, and the island’s vibrant local culture.

🏃‍♂️ Phuket 100K Ultra Marathon Race Overview

• Event: Phuket 100K Ultra Marathon 2025
• Date: Saturday, 7 June 2025
• Location: Mai Khao Beach, Thalang District, Phuket, Thailand
• Host Venue: Splash Beach Resort Phuket
• Race Categories:
  • 100 km
  • 60 km
  • 50 km
• Official Website: phuket100kultra.com
• Facebook: Phuket 100K Ultra Marathon

⏰ Start Times & Cut-Offs for Phuket 100K Ultra Marathon

Distance	Start Time	Cut-off Time
100 km	03:00 AM	18 hours
60 km	04:00 AM	11 hours
50 km	04:00 AM	9 hours

This early start helps runners make the most of cooler morning hours before Phuket’s sun kicks into full gear.

🌴 Phuket 100K Ultra Marathon Course Description

The course consists of a 20 km loop that runners will repeat depending on their chosen distance. Each loop features:

• Coastal stretches near Mai Khao Beach
• Passes through local villages and coconut groves
• Moderate elevation gain (approx. 152 meters per lap)
• Road surface is a combination of paved roads and forest paths

This looped format allows for well-placed aid stations and medical support, while giving spectators and family members multiple opportunities to cheer on participants.

🥇 What’s Included

All registered runners receive:

• Official race bib and chip timing (single-use chip)
• Event T-shirt and finisher’s medal
• Race insurance
• Fully stocked aid stations with hydration, snacks, and electrolytes
• Medical assistance at designated points
• Post-race meal at Splash Beach Resort

VIP upgrade options may include shuttle services, hotel packages, and early bib pickup.

🏨 Phuket 100K Ultra Marathon Venue Highlight: Splash Beach Resort

The event is hosted at the Splash Beach Resort in Mai Khao, just minutes from Phuket International Airport. This beachside resort serves as:

• The start and finish line
• A venue for race pack pickup
• The post-race celebration zone
• Accommodation for many runners and their families

Address: 65/47 Moo 4, Mai Khao, Thalang District, Phuket 83110, Thailand 📍 View on Google Maps

🗓 Race Pack Collection

• Date: Friday, 6 June 2025
• Time: 1:00 PM to 8:00 PM
• Location: Convention Hall, Splash Beach Resort

Runners must bring a valid ID and confirmation email to collect their race packs. No collection is available on race day.

🌦 Tropical Conditions & Terrain

Running an ultra-marathon in Phuket means preparing for:

• High humidity and temperatures ranging from 27–35°C
• Sudden rain showers (it’s the early monsoon season)
• Long daylight hours and potential heat exhaustion risk

Training in heat and planning hydration and salt intake is essential for success in this tropical ultra marathon.

🏃‍♀️ Who Should Join Phuket 100K Ultra Marathon?

Whether you’re a seasoned ultra-marathoner or stepping up from a marathon for the first time, the Phuket 100K Ultra Marathon offers a unique mix of challenge and natural beauty. This event is ideal for:

• Phuket 100K ultra marathon runners looking for an exotic destination race
• Marathoners wanting to test 50K or 60K distances
• Endurance athletes seeking a multi-lap format
• Adventure-seeking runners combining fitness with a tropical vacation

🌟 Why Run the Phuket 100K Ultra Marathon?

1. A Scenic Coastal Route

Enjoy winding through Phuket’s lesser-known countryside, with views of beach forests, temple backroads, and quiet communities.

2. Supportive Community

Experience Thai hospitality, cheering volunteers, and dedicated race marshals helping you stay safe and motivated.

3. Looped Format for Strategy

The 20 km loop allows you to plan pace, nutrition, and support without unfamiliar terrain surprises.

4. Post-Race Recovery by the Beach

Unlike most ultras, this one ends right on the beach — perfect for a sunset celebration and ocean cool-down.

📸 What to Bring for Phuket 100K Ultra Marathon

• Running gear suitable for heat and humidity
• Hydration vest or handheld bottles
• Electrolyte tabs or salt sticks
• Sunscreen, hat, and sunglasses
• Change of clothes and towel for post-race comfort
• Energy gels or nutrition (custom fueling stations available but may not suit all runners)

👨‍👩‍👧‍👦 Spectators & Family Activities

Mai Khao and nearby Nai Yang offer plenty for spectators and family:

• Beachfront resorts and spas
• Sirinat National Park
• Turtle conservation centers
• Shopping at Turtle Village or walking street markets
• Thai cooking classes or elephant sanctuaries for a cultural twist

Racers can turn the event into a full Phuket wellness getaway for the whole family.

✈️ Getting to Phuket

Phuket International Airport (HKT) is just a 15-minute drive from Mai Khao. Taxis, Grab, and hotel transfers are available. Many runners choose to arrive 2–3 days early to acclimate and explore.

📝 Registration Info for Phuket 100K Ultra Marathon

Registration opens in January 2025 through the official event website. Early bird spots for Phuket 100K Ultra Marathon tend to fill quickly, especially for the 100K and beachfront room blocks at Splash Resort.

🏁 Last Call

The Phuket 100K Ultra Marathon isn’t just about the distance — it’s about the journey, the scenery, the challenge, and the people you meet along the way. Set against a backdrop of palm-lined beaches and village roads, it offers a rare chance to push your limits in one of the most beautiful corners of the world.

Whether you’re aiming for a personal best or just want to say “I ran 100K in paradise,” this event is one of Southeast Asia’s must-run ultras. So lace up, book early, and get ready for an unforgettable finish line — where the only thing more rewarding than the medal is the view.