Crewable logoCrewable
Half Marathon5KRegistration open

Haunted Half Marathon and 5k by Run the Undergrad

Rexburg, Idaho
Entry from
$10
Days to go
18
Register from $10 on RunSignUprunsignup.com

At a glance

Date
Oct 24, 2026
Location
Rexburg, Idaho
Distances
Half Marathon, 5K
Registration
Registration open until Oct 24, 2026, via runsignup.com
Official site
runsignup.com
Listed from
RunSignUp
Last checked
Oct 5, 2026

Plan this race for free

Aid stations, cutoffs and pacing in one plan, with the timeline your crew follows. Crew invites and race-day updates come with a Race Pass.

Build my plan

About this race

Get ready for a spine-tingling race experience at Porter Park in Rexburg on October 24, 2026, where the Haunted Half Marathon & 5K transforms this beloved community gathering place into a chilling Halloween adventure. Runners will wind through the park’s tree-lined paths and open green spaces—normally known for recreation and events—now filled with eerie decorations, costumed volunteers, and surprise frights around every corner. With a festive, family-friendly atmosphere by day and a spooky, adrenaline-pumping vibe by dusk, this race invites participants of all levels to dress up, push their limits, and celebrate the season with a hauntingly unforgettable run.

Key dates

Registration opens

Mar 24, 2026

Registration closes

Oct 24, 2026

18d

Race day

Oct 24, 2026

18d

Standard ends

Oct 24, 2026

18d

Pricing

Haunted Half Marathon

Standard, until Oct 24, 2026

$60

Haunted Half Marathon BYU-I Student Entry

Standard, until Oct 24, 2026

$35

Haunted 5k

Standard, until Oct 24, 2026

$25

Haunted 5k BYU-I Student Entry

Standard, until Oct 24, 2026

$10

Email me updates about Haunted Half Marathon and 5k by Run the Undergrad

Registration openings and major changes, like a new date or a cancellation.

Entry transfers

Can't race, or need an entry? Post it here so nobody has to ask if it's still available.

See the boardI have an entry

Similar races

  • Fall Creek Beast

    Oct 31Swan Valley, ID50K, Half Marathon

    Also a half marathon, 33 mi from Haunted Half Marathon and 5k by Run the Undergrad, registration open

  • Dimple Dell Half Marathon

    Oct 10Sandy, UTHalf Marathon

    Also a half marathon, 2 weeks before Haunted Half Marathon and 5k by Run the Undergrad, registration open

  • Canyonlands Ultra

    Oct 24Moab, UT100K, 50 mi +4

    Also a half marathon, the same weekend as Haunted Half Marathon and 5k by Run the Undergrad, registration open

  • Acorn Creek Trail Run

    Oct 24Pilot Hill, CAHalf Marathon, 10K

    Also a half marathon, the same weekend as Haunted Half Marathon and 5k by Run the Undergrad, registration open

Straight-line distance

More Half Marathons in Idaho

All Half Marathons in Idaho

Races Near Jackson

All races near Jackson
Race planning

Plan Haunted Half Marathon and 5k by Run the Undergrad with Crewable

Build your aid station plan, organize your crew, and dial in your nutrition strategy. Everything you need to finish strong.

Build my plan

Are you the race director for Haunted Half Marathon and 5k by Run the Undergrad?

Claim this race to manage registration, volunteers, and race day.

Claim your race