Two weeks ago, James and Kati Kim of San Francisco loaded their two children into the car and drove to the Northwest for Thanksgiving.

They spent the holiday with family in Seattle and then headed to Portland to visit friends. Their next stop was to be a hotel in Gold Beach on the Southern Oregon Coast before returning home.

Missing: Authorities are searching for James and Kati Kim of San Francisco and their daughters Penelope, 4, and Sabine, 7 months.

They never made it. No one has heard from the Kims for a week.

On Friday, police from more than a half-dozen agencies searched along highways and rural roads between Salem and Gold Beach -- any possible route the family may have taken. The Oregon Air National Guard sent a Black Hawk helicopter to conduct an air search near Agness on the Rogue River, and Josephine and Coos County sheriff's deputies patrolled remote roads to see whether they could find a trace of the family.

Oregon State Police and the Curry County Sheriff's Office are talking with the San Francisco Police Department about what to do next. Because no one knows where the family might be, there is no single agency in charge, which created some confusion Friday about where to focus the investigation.

"Everyone from Salem to the southern part of the state should be on alert," said Lt. Dennis Dinsmore of the Curry County Sheriff's Office. "We're going as far as we can go and making sure our people stay safe at the same time."

East of Gold Beach on Friday, Josephine and Coos County deputies used four-wheel-drive vehicles and a Sno-Cat to search without luck. The core of their search was along Bear Camp Road, which was covered with snow and ice at higher elevations. They also searched along Forest Service roads into the Agness Pass area and into Eden Valley past Mount Bolivar.

Police said family and friends of the Kims paid for private helicopters to help search the rugged terrain along Oregon highways 38, 42 and 126 between Interstate 5 and the coast.

No significant leads

But so far, with no significant leads on the family's whereabouts, police are stymied.

"There's not a lot we can do right now other than get the word out because there is no real specific point of focus," said Lt. Gregg Hastings, an Oregon State Police spokesman. "We're going to have our troopers drive some of the routes they might have taken to Gold Beach, but we're hoping for more thorough tips from the public if anyone's seen them."

Police said that the Kims' cell phones and credit cards have not been used since Nov. 25.

James Kim, 35, is a senior editor at CNET, an Internet media company that provides reviews and other services about technology. Kati Kim, 30, is a 1997 graduate of the University of Oregon who majored in French. She oversees the two family-owned stores in San Francisco.

The couple is traveling with their daughters, 4-year-old Penelope and 7-month-old Sabine. Police said the Kims were driving a 2005 silver Saab station wagon with a personalized California license plate DOESF.

James Kim's sister, Eva Kim of San Francisco, flew to Crescent City, Calif., on Friday with her husband and planned to drive north to Gold Beach. She said they plan to meet up with her parents who were traveling from Los Angeles.

"We're going to drive slowly along Highway 38 and see if there's anything we can find," Eva Kim said. "We have not been reassured by the Oregon police that they are doing an exhaustive search, so we're doing it ourselves."

Route in question

Authorities bristled at the notion they're not doing enough.

Dinsmore of Curry County said his discussions with family members have been cordial. "When our experienced mountain-trained deputies say they have searched and can't go any further, then we pull out," he said. "They know what they're doing."

Part of the problem is that no one knew what route the Kims were taking from Portland to Gold Beach. Dinsmore said there are a number of routes, and some of them that reach 4,000 feet elevation in Curry County can be treacherous. With dips and crests along the winding roads, it would be easy for someone to lose control and drive off the shoulder, police said.

The Kims left the Bay Area on Nov. 17, driving to Seattle to visit James Kim's uncle and aunt for Thanksgiving.

"We talked about the kids and the family," said Clint Youn. "It was a good visit. Everything seemed perfectly all right."

The Kims left Seattle the day after Thanksgiving for Portland, where they visited friends. A week ago, they had brunch with Ryan Lee. Lee said they spent about 90 minutes together before the family left to go shopping in Northwest Portland before heading to Gold Beach, where they had reservations at Tu Tu Tun Lodge.

They never arrived at the lodge, and a woman who was house-sitting for the couple called police Wednesday to file a missing persons report.

Brandy Hatch of Astoria, a friend who first met the Kims while working in the high-tech field in San Francisco, said it is out of character for the couple to not stay in touch.

"They would not just drive off without telling someone," she said. "James checked in with work every day whether he was going to be there or not."

Hatch, an administrative assistant for KMUN radio, said she plans to rent a car Saturday and drive south on U.S. 101, while other friends scour the routes from Portland to Gold Beach.

"I know they would do the same thing for me," she said, fighting back tears. "I know that they would drop anything to help a friend."

Family members are worried. But they're hopeful they will find their loved ones.

"We did not sleep well last night," Youn said. "I think everything is all right. I hope that everything is going to be OK. That's what I want."