Amy Harper, Hannah Jones, Andrew Berry and Matt Long scaled Ben Nevis, Scotland, to complete the Three Peaks Challenge in 24 hours.
The DTZ surveyors, together with Tom Burn, raised £3,000 for charity after scaling the highest mountains in England, Wales and Scotland.
The team, which was supported by driver Phil Reynolds also of DTZ, completed the challenge with 30 minutes to spare.
Funds raised will be donated to Wooden Spoon, a charity which supports a range of projects designed to improve life for disadvantaged young people through social and sporting events.
DTZ contributed to the total amount raised as part of its charity matching initiative.
Ms Jones said: “We are delighted with the total raised and would like to thank everyone who contributed and supported us along the way.”