Real Sierra Drive Times, Measured Not Estimated

Two things break the numbers in most travel articles. The first is that mapping software gives you a time for an empty road, and the roads that matter here are not empty at the times you will use them: Highway 4 above Angels Camp on a Friday evening in ski season, Highway 120 into Yosemite on a summer Saturday morning, and Highway 108 out of Sonora on a Sunday afternoon each run twenty to forty minutes longer than the estimate.

The second is elevation. These are not motorways. Highway 4 climbs from 1,400 feet at Angels Camp to 8,730 at Ebbetts Pass, mostly on two lanes with no passing, and one slow truck sets the pace for everyone behind it for twenty miles. A 60-mile leg here is not an hour.

Every figure in the table is measured door to door in ordinary daytime conditions, and the winter allowance column is what to add for a wet or snow-covered road, not for a storm. In an active storm the honest answer is to wait it out.

Three passes cross the central Sierra and all three close for winter. Caltrans District 10 shuts and reopens Ebbetts (State Route 4) and Sonora (State Route 108); the National Park Service handles Tioga Road (State Route 120) inside Yosemite. Nobody publishes a date in advance, because the date is decided by snowpack and avalanche risk, not the calendar.

The pattern from the records is consistent enough to plan around. Closure comes with the first sustained storm, typically the first half of November and occasionally late October. Reopening is late May in an average year, mid-May in a light one, and July in a heavy one — the Park Service starts clearing Tioga around 15 April and the job takes one to two months. Ebbetts and Sonora tend to open within a week or two of each other and usually a little before Tioga.

The practical consequence for a Memorial Day trip is that you should not assume any of the three is open. Plan the trip so it works with the passes closed, and treat an open pass as a bonus.

Closes: early November, give or take. Opens: late May, give or take a month. No exceptions and no announcements.

Ebbetts (SR 4): 8,730 ft, Caltrans · Sonora (SR 108): 9,624 ft, Caltrans · Tioga (SR 120): 9,945 ft, National Park Service

Chain control

None reported

Closures

None reported

Mountain temp

64°F

Sky

Clear

Snow next 24h

0"

Snow next 72h

0"

Snow level

10,900 ft

Highway 4 is the shortest way from the Bay Area to a giant sequoia grove and a ski hill: Angels Camp, Murphys, Arnold, Calaveras Big Trees, Bear Valley. Highway 108 is the Sonora corridor and gives you Twain Harte, Pinecrest and Dodge Ridge. Highway 120 is the Yosemite road through Groveland. Highway 49 crosses all three and joins the Gold Rush towns.

The mistake is treating them as interchangeable because they look close together on a map. There is no quick way between the upper ends of Highway 4 and Highway 108 in winter — the connecting roads over the ridge are unploughed forest routes — so a trip from Bear Valley to Dodge Ridge means coming most of the way back down to the foothills. That is 90 minutes in either direction, not the twenty the map implies.

On the map the two ski hills are fifteen miles apart. On the road, in February, they are an hour and a half.

Rule of thumb: pick one corridor per trip below the snow line, or accept the descent between them

Between roughly 4,000 and 5,000 feet — which includes Arnold and Twain Harte — a snowy road adds ten to twenty minutes and nothing more dramatic. Above 6,000 feet, chain control is the variable that matters: R1 and R2 restrictions mean chains unless you have four-wheel drive with snow tyres, and they are enforced at a checkpoint you cannot drive around. Fitting chains in a lay-by in the dark costs half an hour before you have moved.

The other winter cost is daylight. These roads are unlit, deer are active at dusk, and the last hour of a mountain drive in the dark in falling snow is the part people underestimate. Our own rule for guests is to be off Highway 4 above Arnold by nightfall in a storm.

Add half an hour above 6,000 feet in winter, and another half hour if you have to fit chains.

Carry: chains for your tyre size, a torch, gloves and a full tank from the foothills — there is no fuel above Arnold on Highway 4

As a day trip from San Francisco, the central Sierra is at the edge of reasonable. Calaveras Big Trees is three hours each way, which is six hours of driving for four hours of trees — doable, and plenty of people do it, but it is a long day. Columbia and Murphys at two hours forty-five are a genuinely comfortable day out. Yosemite Valley at just under four hours each way is not a day trip, whatever the roundups say.

As a weekend, everything changes. Two nights at 4,000 feet puts the sequoias, three Gold Rush towns, a ski hill and a river canyon inside an hour of the front door, and you drive the long leg once in each direction rather than twice in a day.

The honest line: two and a half hours is a day trip, three and a half is a weekend.

From San Francisco: Murphys 2 h 30 m · Big Trees 3 h · Bear Valley 3 h 30 m · Yosemite Valley 3 h 55 m

Chain control

None reported

Closures

None reported

Mountain temp

76°F

Sky

Clear

Snow next 24h

0"

Snow next 72h

0"

Snow level

10,700 ft

Arnold sits at 4,000 feet on Highway 4, which is the reason the drive-time column for the cabins reads the way it does: twenty minutes to the sequoias, forty minutes to Bear Valley, fifteen to Murphys, an hour to Columbia and Sonora, and an hour and a half to the Highway 108 ski hill. It is also below the usual snow line, so the road to the door is ploughed and you drive up to the snow rather than living in it.

Both our cabins are on that road, and every number on this page was measured from one of their driveways.