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Who's In?
Seattle · Running

The Free RSVP Tool for Seattle Runners

Organize spontaneous trail runs around Green Lake, coordinate Greenbelt marathoners, and manage your running group's schedule without juggling spreadsheets or paid tools. Who's In handles RSVPs, member messaging, and logistics—free.

Free forever No credit card Setup in 2 minutes

Seattle's running culture thrives year-round despite rain, from casual Greenbelt joggers to serious ultrarunners training on the Cascade foothills. The city's tight-knit running community relies on word-of-mouth and social media to organize everything from weekday evening runs in Fremont to weekend mountain adventures. Managing who's showing up to that 6 AM Green Lake meetup or coordinating carpools to Snoqualmie Pass trailheads gets messy fast.

Challenges Seattle running organisers face

Tracking RSVP Counts

Lose runners in text chains and Facebook comments, never knowing exactly who's committed to Saturday's long run.

Last-Minute Route Changes

Can't quickly notify everyone when weather forces a route pivot or a trail is unexpectedly closed.

Member Communication

Struggle to share pace groups, parking details, and meetup times with scattered messaging across multiple platforms.

Built for Seattle running groups

  • One-tap RSVP — no app download required
  • Instant WhatsApp & iMessage sharing
  • Automatic waitlist when capacity is reached
  • Real-time attendance tracking
  • Recurring events — set once, runs forever
  • Works perfectly on mobile
Free
for running organisers
  • Unlimited free events
  • Unlimited attendees
  • RSVP link sharing
  • Attendance tracking
  • Waitlist management
  • No ads, no spam

Launch Your Seattle Running Group Free

No credit card required. Create your first event and start collecting RSVPs in under 2 minutes.

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