(CNN)A 49-year-old Colorado woman who went cycling on Mother's Day hasn't been seen since, according to the Chaffee County Sheriff's Office.
Suzanne Morphew went missing in the area of County Road 225 and West Highway 50 west of Maysville, Colorado, on Sunday.
More than 100 search personnel, numerous drones, eight tracking and scent dogs, and flyover missions by Reach Air Ambulance have searched the area for any leads.
A Facebook page has been set up to find Morphew, and Morphew's husband Barry has pledged $100,000 for information that leads to her safe return. That reward has been increased to $200,000 thanks to a matching donation from a friend.
A GoFundMe page has also been set up for family and volunteers aiding in the search.
The FBI has set up a dedicated tip line at 719-312-7530 for any leads.