Marathon runners of Mumsnet: would you date someone who didn't share a similar drive?

[Pondervision]

Just curious really. So many people seem to be into endurance sports these days and it obviously requires a certain drive to compete in regular marathons, triathlons, etc. So, would those of you who do need someone similar as a partner - e.g. they'd understand, share the interest or just be unnattractive if they weren't as dynamic in some way (e.g. maybe if they cycled it'd be fine, but not if they were, for example, obsessed with painting instead)?

I wouldn't be able to have a relationship with someone who was hostile to me doing an active hobby (I have run and hiked with women who talk about needing to earn permission from their partners to go out for a few hours, or whose partners resent them spending money on decent footwear or basic safety equipment) but I wouldn't need them to be sporty themselves and if they were I would expect to have as much time to do sport as they did.

I can't imagine juggling a two-marathoner household with work and small children.