Amy Wroe Bechtel, 25, disappeared after leaving her Lander home to go jogging near the Loop Road in the Shoshone National Forest on July 24.
More than 100 people spent more than a week searching the forest for signs of her, but they turned up no leads. Local authorities have declared it a criminal investigation and have received help from the state and the FBI.
Family and friends this week began distributing missing-person posters at national parks, truck stops around the country and in every chamber of commerce in Wyoming.
Bechtel's brother-in-law, Jeff Bechtel, said friends and family are trying to be productive in helping with the search.
"We're an impressive think tank of ideas," he said. "We're a bunch of people with too much time on our hands.
Meanwhile, a CBS television crew has been in Lander for about a week, and national media coverage of the search was expected to begin soon, Bechtel said.
Biological evidence collected in a search of the home and pickup truck of Amy Bechtel and her husband Steve was sent to the state Crime Lab in Cheyenne, said Fremont County Sheriff Larry Mathews.
Mathews has said the search of the Bechtel home and pickup truck was part of a larger investigation, and stressed the investigation was not centered on Steve Bechtel.
Steve Bechtel, meanwhile, has refused to take a polygraph test on the advice of his attorneys, Ed Moriarity and Kent Spence of Jackson. Bechtel said his attorneys' firm, Spence, Moriarity and Schuster, has a blanket policy of refusing to let their clients take polygraph tests because they believe such tests are inaccurate.
Results from polygraph tests are inadmissible as evidence in court, but Mathews said the test can serve as an investigative tool.