4. Match 1-6 with a-f.

1. 22 October, 2018 - b the day they set off 2. 412 km - d the length of the walk 3. after two days - f the weather changed 4. the three friends - *(There is no matching option in the provided list)* 5. 28 October, 2018 - a the day they arrived home 6. in the spring - e when the friends plan to start again