Altyn-Arashan and the Ala-Kul trek from Karakol

Choose a valley night or the Ala-Kul loop

Most people come for one night: up from Ak-Suu on the first day, a soak in the springs, down on the second. The Ala-Kul loop is a different trip. It takes three or four days on foot from the Karakol valley, crosses a 3,860 m pass and ends at the same springs.

For either, sleep in Karakol the night before and the night after, and start any long drive the next morning. If you are unsure about the altitude, do the valley night first: the walk towards the pass from Altyn-Arashan shows you the lake basin and the scree without committing you to the whole loop. In the eight-day Kyrgyzstan itinerary the Altyn-Arashan night falls on days 5–6; swapping it for the four-day trek makes the trip ten days.

1. 1

   Night before, in Karakol

   Leave your main luggage at the hotel and fix the UAZ, horse or camp by message.

2. 2

   Day 1: up the valley

   Minibus or taxi to Ak-Suu, then 2–3 hours by UAZ, a 16 km ride or most of a day on foot. Soak in the springs before dinner.

3. 3

   Day 2: down to Karakol

   Breakfast and a short walk, then down to Ak-Suu and the minibus back. Sleep in Karakol.

4. 4

   Day 3: onward

   Start the drive to Bishkek or Issyk-Kul in the morning, not on the day you come down.

What you find at Altyn-Arashan

Arashan is the gorge and its river; Altyn-Arashan, the “golden spring”, is the settlement in its wide middle part. It is a clearing above the river with a few wooden houses, yurt camps and bathhouses, spruce forest on both slopes and a view of the 5,020 m Palatka peak. There is no village and no traffic except the UAZs and horses.

The springs come out at different temperatures. CBT Karakol gives up to +41 °C for the hydrogen-sulphide spring, where people bathe all year, and up to +32 °C for a radon spring. Owners have built wooden bathhouses over several of them, and wild pools lie along the riverbank, among them the Swallow's Nest.

The valley is also the last stop of the Ala-Kul loop, so in July and August it fills with trekkers coming down from the pass. From the camps, a day walk or ride leads up to the Keldike valley and on towards the pass above the lake: about 3 hours on horseback to Keldike, then the last scree on foot.

Getting there: minibus to Ak-Suu, then UAZ, horse or on foot

The trip has two legs. First, a minibus or taxi from Karakol to Ak-Suu, the village also called Teploklyuchenka, about 15 km away. Then 15 km of rough track up the Arashan river, which only UAZ jeeps, GAZ-66 trucks, horses and walkers manage. Above the village the valley forks: the left branch leads to the Ak-Suu sanatorium, a different set of hot springs, and Altyn-Arashan is up the right branch.

By UAZ. Agree the price for the whole car, the pick-up time for the way down and whether the driver waits. In July and August the cars in Ak-Suu are taken early, so book a driver the day before. Karakol Tour runs 5-seat UAZ jeeps and 8-seat UAZ vans (+996 556 421742), and CBT Karakol arranges transfers and 4WD day trips; both quote on request.

On horseback. CBT Karakol's two-day ride covers the 16 km from Ak-Suu to its camp on day one and comes back the next day. Tell the organiser how much you have ridden before you book. Multi-day rides are in horse trekking in Kyrgyzstan.

On foot. The track climbs through spruce forest beside the river and is shared with the UAZs. Ak-Suu lies at about 1,700 m, so the walk up gains some 800 m by our arithmetic. The 15 km descent takes 4–5 hours; the way up takes longer, so leave Ak-Suu by 09:00 to arrive in daylight. To shorten the walk, take a UAZ up the lower part of the track and walk the last 4–5 hours, as some operators plan it.

In your own or a rental car. Drive only as far as Ak-Suu. Paid parking there costs about 100–200 som a day, and a Bishkek rental company tells its clients not to take crossovers such as a RAV4 up the track: it has boulders and deep ruts, and cars with less than 220 mm of clearance ground out.

Where to sleep and bathe, in the valley and on the trek

Few places in the valley publish prices, and the official register of yurt camps lists just one camp there. The table shows the prices we found for the valley and for the camps on the trek, with the date we read them.

The booking site and CBT Karakol describe Sirota differently: the site shows beds, while CBT Karakol writes of sleeping bags or blankets, no showers and full payment before you walk up. Ask each camp whether you get a bed or a mat and whether bedding is included. While the camps are open you can trek without a tent: in 2025 two trekkers paid only for yurt beds and cooked their own food, agreeing 2,000 som for a bed at Keldike after being asked 4,200 som with meals. In July and August book every trek night and the Altyn-Arashan night: in 2025 trekkers who reached Altyn-Arashan late without a booking spent a long time looking for a bed.

Tell your camp about food needs when you book. Meals, pools, horses and transport are paid separately and mostly in cash, so carry small som notes.

The Ala-Kul trek: route, stages and heights

The loop climbs the Karakol valley to the Sirota camps, reaches Ala-Kul lake at 3,532 m, crosses the Ala-Kul pass and drops through the Keldike valley to Altyn-Arashan and Ak-Suu village. Visit Karakol's four-day programme counts 39 km on foot and 65 km with the drives. In summer the path is easy to follow; the hard parts are the altitude and a steep, loose descent below the pass. Skip it if altitude has troubled you before or you have not walked 5–7 hours a day on mountain paths.

Sources give the pass four heights: 3,860 m from the Karakol operators Visit Karakol and Karakol.kg, 3,884 m in the Russian Westra pass catalogue, 3,920 m on OpenStreetMap and 3,950 m from Visit Alay. Plan for about 3,900 m. Westra grades it 1A, the lowest numbered grade, with snow and scree slopes: no ropes or climbing in summer conditions.

Treat the operator's height changes as rough: from Sirota at 2,800–2,960 m, a gain of 850 m does not reach 3,860 m. Day one depends on where the car leaves you. Visit Karakol walks 11 km from the first bridge, CBT Karakol gives about 18 km and 5–6 hours to the Sirota camp, and a 2025 trek report logged 19 km and 1,070 m of ascent from the park gate. The last day varies too: Visit Alay gives 15 km and 4–5 hours from Altyn-Arashan to Ak-Suu village, and mentions one stream crossing below Keldike, low on its trip; after rain, ask your camp about the water.

Three or four days. The fast version sleeps at Sirota, then does the lake, the pass and the descent to Altyn-Arashan on day two: about 1,000 m up and 1,400 m down by our arithmetic. The four-day version splits that day with a night at Keldike, as in the table, or in a tent by the lake.

Direction. Walk up the Karakol valley and down to Altyn-Arashan, the usual way according to the Kyrgyz guide Too.kg. You sleep at 2,800–2,960 m before the pass day and finish at the hot springs. The reverse climbs the scree instead of descending it, but means about 1,400 m of ascent from Altyn-Arashan in one day, or a first night at Keldike at 3,200 m.

Shorter versions. From Altyn-Arashan you can walk or ride towards the pass for the view down to the lake and come back the same day; horses stop at the foot of the scree. From the Karakol valley, a group with a 4×4 to the road end walked to the lake and back in one long day in June 2025, without the pass.

Getting to the Karakol-valley trailhead

The loop starts at the gate of Karakol natural park in the Karakol valley. Take minibus 101 or a taxi to the gate, or hire a 4×4 to the road end at 2,550 m, 1–1.5 hours from town. Starting at the first bridge instead of the gate saves about 8 km on day one, by our arithmetic from the 19 km and 11 km above. Use a prepared 4×4 on the valley road, not an ordinary car, and leave your main luggage at your Karakol hotel. No timetable is published for minibus 101, so the fares below are trekkers' reports.

For the lake-only day, the T—Zh group's June 2025 timings give the scale: UAZ from Karakol at 08:30, road end at 10:20, about 4 hours up to the lake, back at the car at 15:10 and in Karakol at 18:00.

Karakol Tour also runs UAZ transfers up the Karakol valley to the mountaineering camp on the Ala-Kul road. A group trip includes all of this: the Trekking Union of Kyrgyzstan's four-day Ala-Kol trip from Bishkek costs 19,900 som per person with transport, guide, tent, sleeping bag, mat and park tickets; food is extra (summer 2026 prices).

Park fees, route registration and border permits

Expect a small cash fee at the Karakol park gate and a tent fee if you camp. The park publishes no tariff online, so the amounts in the table are what trekkers and the press report. Since December 2024 the park has been run by the Presidential Affairs Department, which announced electronic barriers and cashless payment in January 2025. A Ministry of Natural Resources order in force since February 2026 requires protected-area checkpoints to record visitors' passports and to issue a receipt for cash or QR payment. Carry your passport and small notes.

The only official figures are general ones. On 22 June 2026 the deputy minister of natural resources told a parliamentary committee that natural-park fees run from 150 to 700 som by visitor category; he did not name Karakol. An MP proposed charging foreigners $20–50; we found no decision on it by 27 September 2026.

Route registration. The Emergencies Ministry asks tourist groups and solo trekkers to register a route through its online form 10 working days ahead, to contact the regional office again no earlier than 24 hours before the start, and to report the end of the route. Register with the Issyk-Kul office, and leave your route and return date with your Karakol guesthouse.

Border permit. Not needed. The Issyk-Kul permit zones listed by CBT Karakol and Visit Karakol are Karkyra, Sary-Jaz, Enilchek and the areas around them; the Karakol and Arashan valleys are on neither list.

When to go: the valley most of the year, the trek in high summer

The valley is open for most of the year; the pass is a summer route. High season for trekking around Karakol runs from June to early September, but in June many passes above 3,500 m are still under snow, so late June opens more routes. The lake is frozen from October to May. Camps set the end of the season as much as the weather: a 2025 trek report found many yurt camps on the trek closing after 15 September; after that you need a tent, or a day walk to the pass from an Altyn-Arashan guesthouse.

Summer weather turns fast: one trekker had rain and thunder the day before a clear day on the pass. Check the Kyrgyzhydromet forecast before you leave Karakol and ask your camp about the pass the evening before. In winter, UAZ trips still run to the valley and Destination Karakol lists Altyn-Arashan among its winter activities; outside summer the trail to the pass lies under snow and is too cold for camping.

Guide, porter, horse and what to pack

In summer, a fit hiker with an offline map can walk the standard loop without a guide: Destination Karakol says well-marked treks can be walked solo with GPS tracks and recommends guides for longer and harder ones. Hire a guide if you have not walked at altitude before or go outside the camp season. There is no phone signal on the trek, and mountain rescue is limited.

Tents, sleeping bags and stoves can be rented in Karakol. Pack boots with grip and poles for the scree, a warm layer and a waterproof for the pass, sun protection, water tablets or a filter, painkillers and cash for camps, fees and transport. Yurt camps provide bedding, so in camps a sleeping bag is optional.

Save these numbers, published by Destination Karakol: emergency 112, tourist police +996 705 009 102, rescue operations +996 555 445 174.

What goes wrong at Altyn-Arashan and on Ala-Kul

Altitude, scree and weather cause most of the trouble; the rest is logistics.

• Altitude. A night at the lake, about 3,530 m, is the highest camp on the route. One trekker woke there short of breath with a racing heart and felt dizzy on the climb to the pass. If symptoms get worse, go down.
• The scree below the pass. The slope towards Keldike is steep and loose and gets dangerous after rain. Use poles.
• Snow and closed camps. Passes above 3,500 m hold snow in June, the lake is frozen until May, and many camps shut after mid-September.
• Fees without a tariff. Amounts differ by passport, and a second 100 som charge was reported at the Altyn-Arashan checkpoint in 2025. Keep small notes, your passport and the receipts.
• Crowds in July and August. Ala-Kul and Altyn-Arashan are the treks where you are most likely to meet other groups; book beds ahead.
• The wrong hot springs. “Hot springs at Ak-Suu” can mean the Ak-Suu sanatorium on the left fork. Name Altyn-Arashan and your camp when you book a car.

Common questions