Not at all. I have a real thing about these type of things. Sorry, but if I sponsor you for something it has to be for something you would not do otherwise (eg I walked 60k round London and camped overnight in Finsbury Park). I UNDERSTAND why charities use these ideas to drum up support - you get people on board who have always wanted to see Machu Picu or whatever - but I resent having to pay for that.
Donate directto the charity, if you want to. You are not being mean.
I used to sponsor a child in nepal. She would send me pictures and it warmed my heart. Later, I found out that more money was spent on he monthly brochure than on her and others like her, so I give to WaterAid and medecins sans Frontieres which have low running costs.
But think it's OK for people to want to get involved....
If you look on the website, you can usually find out how much of the money goes to the charity - normally it's about half. Unless the person has got some kind of mobility issues, there's nothing that clever about doing the inca trail - I've done it and I'm fat, was a smoker and in my late 30s when I did it.
A mum from nursery called at my house to ask me to contribute to her fund raising walk around the great wall of china. I gently queried why she asked me ( as I don't know her very well) . She said because I obviously could afford it . I told her that I didn't intend to contribute as I only contribute to specific charities. ( DS2 has ASD and i focus on those). She asked if DH would take her forms to work as all this collecting was hard work. Told her to fuck off at that point. lazy hypocritical mare.
Do check - I refused to sponsor a colleague once on similar grounds, and she was very offended that I even thought she would be using any of the sponsored money to pay for her trip!
Mind you, I don't really like any sort of sponsored event. Why do I care if you want to sit in a bath of baked beans for a day? Just ask me for a donation to the charity, and if it's a good cause, I'll give. (Although I recognise that not everyone thinks my way. )
Oh hang on, the paid-for trek I linked to doesn't include the transatlantic flights - those average £500-800 on top so it's close to £2000 altogether. Goodness knows exactly what the £299 is - just a nominal contribution I suppose.
That says the cost of the trip comes out of the sponsorship, mmj - which is what I'm whingeing about. If the trekker paid their own travel costs & all the sponsorship went to the charity that would be different.