Explore/Thailand/TH 86/Kra Isthmus Crossing — Chumphon to Ranong Hot Springs
THChumphon, ThailandEasyPaved

Kra Isthmus Crossing — Chumphon to Ranong HotSprings.

Distance
130 km
Duration
1 day
Climb
900 m
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Curated by Rider · Updated Aug 2026
Overview

Kra Isthmus Crossing — Chumphon to Ranong Hot Springs.

Cross the Malay Peninsula at its narrowest point — just 44km of land separate the Gulf of Thailand from the Andaman Sea. Highway 4 runs from Chumphon over the low spine of the Kra Isthmus and down the Pakchan River estuary, with Myanmar on the far bank, to Ranong — Thailand's wettest, least-touristed provincial capital, famous for its geothermal springs. An easy, atmospheric sea-to-sea day.

Quick facts

SurfacePaved
Distance130 km
Days1
Total climb900 m
DifficultyEasy
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Day-by-day

The route.

ROUTE
5 stops
Start
ChumphonStart · Start in Chumphon on the Gulf coast. Highway 4 west crosses the peninsula at its narrowest — Gulf of Thailand to Andaman Sea in a single morning.
Scenic
Kra Isthmus MarkerScenic Point · The roadside monument at the Isthmus of Kra — the narrowest point of the Malay Peninsula. From here the Pakchan estuary marks the Myanmar border all the way south.
Photo
Punyaban WaterfallPhoto Spot · Roadside waterfall 16km north of Ranong with a walkway to the upper tier. A short leg-stretch before the final run into town.
Scenic
Raksawarin Hot SpringsScenic Point · Ranong's 65°C mineral springs — public soaking pools in a forest park just off Phet Kasem Road. Perfect for post-ride muscles.
End
RanongEnd · End in Ranong town. Day-trip boats to Myanmar's Kawthaung run from the pier; eat seafood at the Andaman fish market.

More routes in Thailand

Doi Tung — Chiang Rai to the Northern Border via the Royal MountainTH 57 · 130 kmDoi Mae Salong — Chiang Rai to Santikhiri Tea MountainTH 57 · 150 kmDoi Suthep & Doi Pui — Chiang Mai's Sacred MountainTH 50 · 55 kmKrabi to Koh Lanta — Andaman Island CrossingTH 81 · 210 kmChaloem Burapha Chonlathit — Chanthaburi to Trat Coastal RoadTH 22 · 160 kmPhu Thap Boek — 111 Bends to Thailand's Cabbage MountainTH 67 · 110 km

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