All I am interested in is doing the bike ride.
If I think it is good enough value for money and something that I'd like to do and worth the hassle of traveling to, then I'll ride it, unless it clashes with a better offer.
I do a lot of rides and I'm really not interested in trying to get people to sponsor me. It's a lot of effort and I doubt I'd raise very much anyway, so I'd never do a ride with a minimum sponsorship.
What would work for me is to make me an offer. Ride this event for £X and £Y will go to charity. Riders can still be encouraged to get sponsored for their ride. Cance Research has a ridiculously easy ride around Milton Keynes which does this.
I will be helping to run a sportive event in October with my cycling club.
Entry is £10 for the 52 mile ride and it will make some cash for the local hospital charity, just as it always has done. It's only a small cycling club and not a proper event organisation, so is run by volunteers which keeps the running cost right down. We got about 200 riders last year.
I think that it depends on what type of event you have.
If it's a very tough challenge of an event, then you should aim for people to raise big money. At the other end, like in the Milton Keynes family ride which children also rode, then it's a matter of stack em high and sell em cheap for a big turnover.
I think that your event is closer to the stack em high category in that it's not a super tough event, it's more of a nice day out. People aren't going to spend all year building up to and planning this ride. It's something I'd do on a whim. And because of that, I don't think that you need to have a lot of whistles and bells.
Our club sportive will give each rider tea, cakes and a sandwhich at the finish, a signed route with a few marshals, a time (I think we get this done extra cheap because of people with connections, I know that timing chips etc are expensive to hire) and not a great deal else.
I think that we raised about £1300 for the local hospital and that was without asking people to raise sponsorhip, it was just giving the profit to charity.
It will be the newcomers to cycling and non cyclists who go and get sponsorship, not people who allready cycle regularly.
How much would I pay to ride my club sportive? It costs £10, which I think is pretty good. £15 would be about the limit for a 50 miler, but if it was a very big event, obviously raising money for charity, had lots (1000+) of riders and a few extra bits, then £20 seems understandably expensive if it's a very good event.
I've still yet to ride a sportive, but am thinking of riding The Rut, organised by Wiggle. About 100 miles of very nice route with a few feed stations, a time (which I don't really care very much about) and not much else. This costs just under £40 which is about my limit of what I think is reasonable. I may re-think that either way after riding it, which is one reason I'm thinking of riding it.