How long is Big SEKI Loop?

Big SEKI Loop is 251 km (156 mi) long as a full loop. Most walkers complete it in about 11 days, not counting stops.

How hard is Big SEKI Loop?

It is rated expert, with roughly 5,523 m (18,120 ft) of total ascent. Only take this on with mountain experience, solid navigation and a realistic view of your own pace.

How long does Big SEKI Loop take?

Allow around 67 hr of moving time. Add a further 30 to 60 minutes for breaks, photographs and lunch.

When is the best time to hike Big SEKI Loop?

April to October is the most reliable window. It walks well across three seasons, with spring and autumn offering the best combination of light, temperature and quiet paths.

Can you bring dogs on Big SEKI Loop?

Dog access is not formally recorded for this route. Local rules usually allow dogs on a lead, but check signage at the trailhead before you commit to the walk.

Is Big SEKI Loop suitable for children?

It is a stretch for younger children. At 251 km with 5,523 m (18,120 ft) of ascent, it suits teenagers and confident young walkers rather than a family stroll.

Is Big SEKI Loop a loop?

Yes. The route is circular, so you return to your starting point without repeating any section.

Big SEKI Loop

Name: Big SEKI Loop
Address: California, United States

ExpertCalifornia · United States

GPX

Distance: 251 km (156 mi)
Elevation gain: 5,523 m (18,120 ft)
Typical time: 67 hr
Difficulty: Expert
Route type: Loop
Highest point: Not recorded

About Big SEKI Loop

Big SEKI Loop is a 251 km hiking route in California, United States. It climbs roughly 5,523 m (18,120 ft) along the way. Most people take around 11 days at a comfortable pace, plus stops. The combination of distance, ascent and exposure puts this at the top end of what a day hike can be.

It forms part of a long-distance path, so it links cleanly into multi-day itineraries.

It is a 251 km loop, so you finish where you started and never repeat a section. It is not consistently waymarked, so carry a map or a downloaded track rather than relying on signs.

Spring through autumn is the natural window, and shoulder season means fewer people on the narrow sections.

In short, Big SEKI Loop suits experienced mountain walkers who are comfortable with exposure, navigation and long descents. Dog access is not formally recorded here, so check locally before bringing one.

Route map

Expert251 km5,523 m

Numbered marks every 50 km

Route line from OpenStreetMap contributors, ODbL. View the source relation

The route in detail

The loop is usually walked clockwise from the main trailhead. The first third does most of the climbing, so settle into a slow rhythm early rather than trying to hold a flat-ground pace. The return leg is the reverse of the outward journey, which makes it easy to judge remaining time.

Highlights

Long-distance path
Circular route, no backtracking
Part of a long-distance path
Over 1,000 m (3,281 ft) of ascent

Know before you go

Best season: April to October
Waymarked: Not consistently
Surface: Mixed natural surface
Dogs: Not recorded, check locally
Wheelchair access: Not accessible
Entrance fee: No fee recorded
Camping: Not recorded
Drinking water: Carry your own
Toilets: Not recorded
Mobile coverage: Generally usable
Parking: Park at the trailhead, arrive early in high season
Emergency: 112 in Europe, 911 in North America

How this trail scores

Computed from distance, ascent, terrain features, surface and access data.

Scenery: 56/100
Adventure: 94/100
Difficulty: 100/100
Accessibility: 13/100
Family: 7/100
Dogs: 47/100

Tips from the trail

Start at first light. A long day is far more pleasant when you are not racing the sunset on the descent.
Aim for april to october for the most reliable conditions.
Download the track to your phone before you leave. Signal is not guaranteed.
Break the route into stages and decide your turnaround time before you set off.
Leave nothing behind, including fruit peel, and stay on the marked line to protect the ground either side.

Warnings

This route is long and sustained. Turn back early rather than late if the weather closes in.
Outside the main season expect snow, ice or closed access on the higher sections.

Safety

Emergency services in United States are reached on 911. Tell someone your route and expected finish time before you set off, particularly if you are walking alone. Mobile coverage is generally usable along this route, but do not rely on it as your only plan. If the weather deteriorates, descending the way you came is almost always the safer option.

What to bring

Comfortable, broken-in hiking shoes or boots
Weatherproof jacket
At least 1.5 litres of water
Trekking poles for the descent
Offline map and compass
Head torch and spare battery
Extra warm layer
Sun hat, sunglasses and high-factor sun cream
Real food, not just snacks

Photography

Overcast light suits this route better than harsh midday sun, especially under tree cover. Because it is a loop, the light changes direction as you go, so save some memory for the back half. A wide lens captures the scale, but a short telephoto is what turns a good view into a photograph.

Frequently asked questions

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