You raised your hand at the board meeting, or your boss volunteered you, or the person who used to do this moved out of state. Either way, you are now responsible for a charity 5K and you do not know where to start.

Good news: this is a solved problem. The playbook below is the version that does not require you to figure things out by failing first.

Week 1: lock the venue and the date

Before anything else: a confirmed venue and a confirmed date. Without those, every other decision is a hypothetical and people stop returning your calls.

  • Pick a date 12 weeks out, minimum. Less than that and your sponsors will not have time to commit.
  • Avoid the obvious conflicts: marathon weekends in the area, school graduations, regional sports finals, holidays.
  • Confirm the venue in writing. Park, school, downtown loop, business park parking lot. Make sure the route is permitted (call the city or county; this often takes a week to come back).

Week 2: define the math

Three numbers run the whole event. Get them down on paper:

  • Target registration count. Be honest. A first-year charity 5K usually clears 150 to 400 runners.
  • Registration fee. Common: $25 early bird (until T-4 weeks), $35 regular, $45 race-day walk-up.
  • Target net to charity. This is the number you tell sponsors and your board. Net = total revenue minus event costs.

Quick math check: 250 runners at $30 average = $7,500 gross. Subtract $1,500 shirts, $800 timing/permit/insurance, $500 venue extras, $300 misc = $4,400 net. That is a real-feeling first-year charity 5K.

Week 3: pick a registration platform

Three categories. Pick one:

  • Race-specific (RunSignup, Race Roster). Built for racing. Bib assignment, results timing, refund handling. Takes 5 to 7 percent. Best default for any 5K with bibs.
  • General event (Eventbrite, Cheddar Up). Cheaper fees. Lighter on race-specific features. Fine if you are not doing chip timing.
  • In-house (Stripe + Google Form). Lowest cost, most work. Skip unless you have a treasurer who really wants to.

Most first-timers should run RunSignup. Pay the 5 percent and use the saved time for sponsors.

Week 4: open registration

Registration opens with a press of a button. What matters more is what is on the registration page:

  • One photo of the venue or course.
  • The cause in two sentences.
  • The price tiers, with the early-bird deadline as a real date, not "early-bird pricing."
  • Required field: t-shirt size, with a visible chart. Required, not optional. (See how to collect t-shirt sizes from a group.)

That is enough. Less is more on a registration page.

Weeks 5 and 6: sponsors

Sponsors are the difference between a $4,000 net and a $14,000 net. Three tiers, ask in person where you can:

  • Title ($2,500 to $5,000): Their name in the race name, big logo on the shirt back, banner at start and finish.
  • Mile ($500 to $1,000): Logo on the shirt back, sign at one mile marker, callout at the finish line.
  • Friend ($100 to $250): Logo on the shirt back, name in the email blast.

Twelve sponsors at an average of $700 = $8,400 added to your net. That is the lever.

Hard rule: every sponsor logo must be on the shirt back. Sponsors care about the shirt. Skip the shirt logo and your renewals next year are at 30 percent.

Weeks 7 and 8: lock the shirt order

This is where most first-timers panic. Don't. The math is in how many t-shirts to order for a 5k, but the short version: order for ~85 percent of expected registrants, distributed S 10% / M 25% / L 30% / XL 20% / 2XL 10% / 3XL 5%, plus a 15-shirt buffer for sponsors and family.

Try the calculator
5K Shirt-Size Calculator

Plug in registrants and audience profile. Returns a per-size order with the buffer baked in.

Pick the fabric:

Recommended starting points

3 picks
Tri-Blend Tee
See picks in chat →
Cotton Crewneck Tee
See picks in chat →
Performance Tee
See picks in chat →

Weeks 9 and 10: marketing

The first email goes to your existing email list (church, school PTA, gym, employer, alumni). The second goes to the charity beneficiary's mailing list (with their permission). The third goes on social with a face from the charity, not a stock photo.

Local press is free. Send a one-paragraph release to the local paper at week 9. Half the time they print it.

Week 11: race operations

  • Volunteers: 8 to 12 for a 250-runner race. Plan a 30-minute Saturday-morning pre-race meeting.
  • Timing: hire a chip-timing company if you advertised "chip-timed." Otherwise, an iPad with a stopwatch and a clipboard is fine for first year.
  • Insurance: most cities require event liability insurance. RunSignup includes it as an add-on. Use that.

Race week and race day

  • Box shirts by size the Wednesday before. (See the event-swag checklist for the full T-week timeline.)
  • Race-morning: bib pickup opens 90 minutes before. Bring a printed list of registrants by last name.
  • Run the race.
  • Post-race: hand out shirts, take group photos, thank everyone by name. The thank-you is the start of next year's marketing.

What nobody tells you

You will be exhausted on race day. That is normal. The thank-you note you write to sponsors the Monday after the race is the single highest-leverage thing you do all year for next year's race. Write it before you forget the names.