It's been dubbed "the second running boom" and in part is down to girl power.
Don't think women are aiming for the "fun run" five and 10 kilometre distances in greater numbers either. It's the 21km half marathon that is proving popular among US women, with females making up close to 60 per cent of event fields.
Running USA quote Run Like a Mother: How to Get Moving - and Not Lose Your Family, Job, or Sanity co-authors Dimity McDowell and Sarah Bowen Shea who say the popularity of the half marathon is down to:
1. The training schedule fitting nicely into the working woman/busy mum's life, allowing her to achieve a significant goal without devoting an entire weekend to running and recovery.
2. Training for a half marathon gives a woman adequate "me-time" (or girlfriend time) necessary for physical and mental health.
3. The pride and satisfaction that comes with crossing the finish line of a long race that requires both focus and commitment.
4. Since many US half marathons are destination events, they are a great way to get in a race, then hang out (and get massages and drink wine) with girlfriends for the rest of the weekend.
5. It contains the most coveted word in the runner's vocabulary: "marathon".
So are we on trend in New Zealand?
Organisers of the Auckland Marathon events see more than 15,500 runners and walkers line up for the marathon, half marathon, quarter marathon and five kilometre events.
Across all the events the gender split comes down slightly in favour of women, making up around 51 per cent of the field in the past three years - a very similar figure to the US
survey.
Drilling down into each individual event and it's a different picture. Women dominate the 5km and quarter marathon, accounting for at least 65 per cent of the field, but in marathon the figure is down around 35 per cent, says race director Richard Lindroos.
In the half marathon race 52 per cent of competitors are women.
Lindroos says the fact that the half marathon sells out only a couple of weeks after entries open could be one reason why women make up more than half the field.
"They were more organised, it sells out and they enter earlier than blokes do," he says.
Auckland-based event organisers Total Sport has been in the business of running events with an off-road flavour for more than a decade, organising everything from 5km to marathon distance runs.
Total Sport's Nicola Carter says there has been a "pretty big increase" in women taking part in events.
"A few years ago it would have been a 70 per cent male to 30 per cent female split. It is now consistently more like 50/50," she says.
It's seen Total Sport introduce kids' distances to many of its events and partner up with a baby-sitting service to make it easier for mums and dads to compete.
Lindroos, who travels to the US and Australia annually to promote the Auckland marathon and get a feel for overseas trends, says women's-only events have been a victim of the popularity of running among women.
"They're just dropping off like flies."
He says women now find general running events are safe, friendly, have a good environment and provide them with a challenge.
So maybe my man drought theory doesn't have legs, although I'm still convinced women significantly outnumber men out on the suburban streets. What I can say is women are embracing running events in greater numbers than they have in the past.
Events:
* Run 10km or 6km in the dark through Wellington's Makara Peak mountain bike park, Saturday May 26, 6pm.
Follow Jog On on Twitter.
