Two walkers tackling the Yorkshire Three Peaks challenge were rescued in separate incidents.
The Clapham-based Cave Rescue Organisation was first alerted to reports of an unconscious walker on Pen-y-ghent who had apparently had a seizure.
The team was called out about 8.05am on Saturday.
A CRO spokesperson said: “The team responded, and assisted Yorkshire Air Ambulance staff to get the casualty into Helimed 99. The patient was then transferred to a road ambulance at Dale Head.”
As the rescue was concluding, the team was alerted to another walker in difficulties at High Birkwith, between Pen-y-ghent and Ribblehead.
The 41-year-old woman had suffered a broken leg in a slip. The team spokesperson said: “On arrival at the scene, team casualty carers took over casualty handling from event first aid staff, and requested the attendance of the Yorkshire Air Ambulance due to the severe nature of the injury.
“The casualty was treated and packaged for transport, and carried by stretcher to Helimed 99, for immediate transfer to hospital.”
The Cave Rescue Organisation, which goes to the aid of those in difficulties both above and below ground in the Yorkshire Dales and surrounding areas, has responded to 75 incidents so far this year.