The Phuket 100K Ultra Marathon 2026 will take place on Saturday, June 6, 2026, starting and finishing in front of Splash Beach Resort in Mai Khao Subdistrict, Thalang District, Phuket Province, Thailand. Distances include 100 km solo (start 3:00 AM, 18 hour cut‑off, 5 loops of 20 km), 50 km solo (start 4:00 AM, 9 hour cut‑off, 2.5 laps: first 2 laps 20 km each, final lap 10 km), and a 60 km mixed team relay (3 persons, at least one female; start 4:30 AM, 11 hour cut‑off, 3 laps of 20 km). The course is 100% road (no trail), with approximately 600 m of CPAC brick surface at the start, total elevation gain of +152 m per loop. Aid stations are located every 2.5 km.
| Distance | Start Time | Cut‑Off | Number of Loops | Mandatory Gear |
|---|---|---|---|---|
| 100 km (solo) | 3:00 AM | 18 hours (finish 9:00 PM) | 5 loops (20 km each) | Headlamp or lighting equipment (can be stored after daylight) |
| 50 km (solo) | 4:00 AM | 9 hours (finish 1:00 PM) | 2.5 laps (20 km + 20 km + 10 km) | Headlamp or lighting equipment (can be stored after daylight) |
| 60 km mixed relay | 4:30 AM | 11 hours (finish 3:30 PM) | 3 laps (20 km each; one runner per lap) | Headlamp for first runner only |
All participants must follow event rules. Registration is closed. Applicants must meet qualification requirements: 100 km entrants must have completed at least two full marathons or one ultra marathon (50 km+) since 2024 with official chip timing (screenshots from smartwatches or running apps not accepted). 50 km entrants do not need prior race results. Once registered, no name changes, distance changes, bib transfers, refunds, or deferrals. Using another person's bib is prohibited. Participants must be in good physical health.
The route runs along Mai Khao Beach Road, through rubber plantations, and past local village life. Nearly 100% of the course has traffic closure or dedicated lanes with cones and traffic marshals. A service station at every 20 km loop (start/finish area) offers food, fruit, drop bags, and physiotherapy — this is the only point where support crews may assist runners.
Phuket 100K Ultra Marathon 2026 in Phuket, Thailand on June 6, 2026, offers 100 km (18h cut‑off), 50 km (9h cut‑off), and 60 km mixed relay on a 20 km road loop along Mai Khao Beach and rubber plantations, with aid stations every 2.5 km, finisher shirt and medal, and qualification requirements for 100 km entrants.
Jun 06, 2026
Distance — 100K
Type — Running
03:00
$83.00
Jun 06, 2026
Distance — 50K
Type — Running
04:00
$46.00
Jun 06, 2026
Distance — 60K
Type — Running
04:00
$92.25
These values represent the 3-year monthly averages for June in Mai Khao.
Learn more about the host city, Mai Khao.
Mai Khao is a beach on the northwestern coast of Phuket, Thailand. It's also known as Airport Beach or Sa Nam Bin Beach, as it's very close to the airport. The northern portion is known as Hat Sai Khao (หาดทรายแก้ว), a long sandy beach with groves of Casuarina trees along the shore.
Read more launchWatch highlights and course previews from previous years.
Read what other athletes have to say about their experience at the Phuket 100K Ultra Marathon.
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