Haunted Half Marathon and 5k by Run the Undergrad
- Date
- October 24, 2026
- Location
- S 2nd W & 3rd W, Rexburg, ID
- Distance
- Haunted 5k · Haunted 5k BYU-I Student Entry · Haunted Half Marathon & more
From the Organizer
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.
Events
Weather
Typical Conditions
It's too far out for a forecast, so here's what weather on this date is normally like in the area. A race day forecast will replace this as race week approaches.
Typical High
54°
Typical Low
31°
Chance of Rain
25%
Based on US Climate Normals data from Rexburg Byu Idaho, 2 mi from the venue.
Host City
About Rexburg, ID
Elevation
5,235 ft
Nearest Airport
IDA
Idaho Falls Regional Airport · 25 mi
Time Zone
Mountain Time
From Endurance Grid
Line up lodging and travel early to lock in your race weekend.
Race Location
Your Next Start Line
What Are You
Waiting For?
Every finish line starts with a single decision. Claim your spot at Haunted Half Marathon and 5k by Run the Undergrad, put it on the calendar, and turn “someday” into a start date.
138
Days to train
- Race
- Haunted Half Marathon and 5k by Run the Undergrad
- Date
- October 24, 2026
- Location
- S 2nd W & 3rd W, Rexburg, ID
Coming Up
More Running races near Rexburg, ID
RMHC's Family Fun Run and Carnival
25 miles away
Anytime Fitness Rigby Lake Run
12 miles away
To Bone and Back Relay
25 miles away
Idaho Falls FireKracker 5k
5K
25 miles away
From Endurance Grid
About This Sport
Endurance Grid is here to help you understand the sport, decide if it's the right fit, and learn how to prepare. For course distances, logistics, and race-day specifics, always defer to the race organizer's event page.
The half marathon is the distance where you find out what you're actually made of. Long enough to demand real preparation. Short enough that it doesn't consume your life to train for it. Most people who run their first half describe it as the race that changed their relationship with what they're capable of. Once you cross this finish line, the bar moves. That's not a warning — that's the point.
Race day energy varies by event size, but the finish line feeling is the same regardless. Big races keep the noise going the whole way. Smaller races give you stretches where it's just you and the miles — and that solitude becomes its own kind of fuel.
The half marathon rewards people who show up for the boring training miles.
How long to train: 10–14 weeks. If you're already running consistently, 10 weeks of structured buildup is enough. If you're building from a casual base, give yourself 14.
Running
From 5K to marathon, running races are the most accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.
Frequently Asked Questions (FAQs)
- What is the Haunted Half Marathon and 5k by Run the Undergrad?
- Haunted Half Marathon and 5k by Run the Undergrad is a running race held in Rexburg, Idaho on October 24, 2026. It is one of the many endurance events listed on Endurance Grid, a multi-sport endurance event calendar covering running races, triathlons, HYROX, and more endurance sports across the United States. Find more running races near you or explore our sports guides to learn what race day actually feels like.
- When and where is the Haunted Half Marathon and 5k by Run the Undergrad?
- Saturday, October 24, 2026 in Rexburg, Idaho at S 2nd W & 3rd W, Rexburg, ID. Check the event page for exact start times and wave schedules.
- How do I register for the Haunted Half Marathon and 5k by Run the Undergrad?
- Registration is handled through the event's registration page. Confirm pricing and distances there, and sign up.
Haunted Half Marathon and 5k by Run the Undergrad
Oct 24, 2026