Relay Iowa 2027 (2026) | Iowa Course DNA & Registration
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Relay Iowa 2027

📅 Jun 11, 2027 – Jun 14, 2027 📍 Sioux City, IA
Course Route:
✓ Primary Route
Distance
Specs 🔍
Distance Options
Elevation Vert
Specs 🔍
Course Dependent
Climbing Profile
Specs 🔍
⛰️ Course Dependent
Estimated Time
⚡ Calc ↗
Varies by Route
Carb Target
⚡ Calc ↗
60–80g/hr
Est. Calories
⚡ Calc ↗
Course Dependent

⚡ Dial in Your Target Wattage & Climbing Gearing for Relay Iowa 2027

Use Threshold Cycling's Cycling Pace & Wattage Calculator to calculate FTP targets and nutrition, or check if swapping to a wider climbing cassette requires extra chain links.

Calculate Target Wattage ⚡ ⚡ Training Zones & FTP 🔗 Climbing Cassette & Chain Sizer
Power & Pacing Favero Assioma Power Pedals

Target real-time wattage on race day and prevent blowing up on early climbs with ±1% dual-sided precision power.

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Course Navigation Garmin Edge GPS (ClimbPro)

Preview remaining ascent, gradient, and distance for every climb on this course before you reach the base.

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About Relay Iowa 2027

Relay Iowa is the World's Longest Relay Run! Teams of up to 12 participants run 339 miles to cross Iowa over a long weekend. You build your own team and then work together to break down the distance into segments of your choosing. You control the order and distance of runners and can change your plan at any time. Any level runner can participate as long as your overall team pace is 10.5 minutes/mile or less, allowing your team to finish in the allotted time.

One runner at a time from each team will advance day and night beginning in Sioux City on Friday and ending in Dubuque on Sunday. It is a relay, not a race, encouraging teamwork, camaraderie and fun while testing your determination. Contact us at admin@relayia.org if you have any questions or need help getting started.

Our non-profit relay raises money for Restoring Hope International, an orphanage in South Africa, as well as various charities in towns along the route and throughout Iowa. While fundraising is not required, we challenge teams to raise at least $339 to enter our Club 339 fundraising competition. Accept the challenge and ask your family and friends to support your epic 339 mile run across Iowa!

Relay Iowa has become a metaphor for a life well lived. It is not a race to the finish, but an extended relay of individuals journeying closely together, sustaining each other as they stretch the limits of their physical endurance, test their mental toughness and draw upon their emotional well in a place beyond their comfort zones, for the sole purpose of improving the life of another human being.

Join us on this adventure!

 

Event details and schedule

  • This is a team event. First your captain registers, creates the team and sets a password. Next, all other team members register using the password. Boom! You just joined the adventure!
  • All teams begin the Relay on Friday of the event weekend. Exact time for each team's departure to be determined a few weeks prior to event and is based on overall team pace. Overall team pace should be no more than about 10.5 minutes per mile in order to finish in the allotted time.
  • It is important to provide an accurate per mile pace during the registration process. Pace should not be your personal best, but a comfortable per mile pace over a long distance in demanding conditions. We will check in with each team captain before the event to verify team pace and set team start time.
  • The course is challenging. Runners should expect to encounter loose gravel, vehicles of all sizes, all types of weather and running in darkness. You will share the road with vehicles throughout the event. Please prepare mentally and physically for this strenuous yet rewarding experience.
  • Teams can divide the mileage in any way that works for the runners. You can change the plan during the event.
  • There are many ways to stay informed. Your team captain should be a great resource for planning and preparation tips. Relay Iowa will send emails and post updates on social media leading up to the event. We also have a website with tips and tricks to prepare for the event. www.relayia.org. Keep in touch!
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🎒 Race-Day Equipment Checklist

Curated gear, rider comfort upgrades, and precision pacing electronics for Relay Iowa 2027. All items are 100% genuine with official US warranties.

Hydration, friction reduction, and race apparel.

✅ In Stock Basics & Aero
Fast Aero Cycling Socks
$15.00

Lightweight compressive aero fabric with seamless toe comfort.

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✅ In Stock Rapid Fuel
Liquid IV Hydration Multiplier
$2.00 – $24.99

Rapid electrolyte absorption to prevent cramping on climbs.

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✅ In Stock Dual-Action Lube
Rock 'n' Roll Gold Chain Lube
$7.50

Cleans grit from pins while leaving a protective wax coat.

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✅ In Stock Pro Immersion Wax
Silca Secret Chain Blend Hot Melt Wax
$37.50

Tungsten Disulfide WS2 immersion wax saving 4–8 watts on long climbs.

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✅ In Stock Endurance Chamois
Men's Ignite Pro-Grip Bib Shorts
$60.00

Multi-density Italian chamois for 6+ hour saddle endurance.

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✅ In Stock Breathable Aero
Men's Ignite Race Jersey
$50.00

Moisture-wicking micro-mesh with 3 reinforced cargo pockets.

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✅ In Stock Post-Ride Swag • Free US Shipping
Threshold Cycling "RIDE" Graphic T-Shirt
$24.99

Soft-spun alpine climbing graphic tee in heather navy. 100% free US domestic shipping.

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✅ In Stock Natural Maple Fuel
UnTapped Pure Vermont Maple Energy Gels
$2.25 – $49.99

Pure organic Vermont maple syrup energy packets for stomach-friendly climb fueling.

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✅ In Stock 50g Carbs / Serving
Carbs Fuel High-Carb Hydration Drink Mix
$36.00

High-density 2:1 maltodextrin-to-fructose endurance drink mix with electrolytes.

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✅ In Stock Gravel & PRO MX SPD
Shimano SPD SM-SH51 2-Bolt Cleats
$17.50

Genuine single-release 2-bolt SPD cleats compatible with Shimano and Favero PRO MX.

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Crash protection, rolling resistance upgrades, and rear traffic detection.

✅ In Stock Lightweight Race
LAS Enigma Road Bike Helmet
$100.00

24 high-flow air channels with micro-dial fit for all-day cooling.

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✅ In Stock 20 Vent Aero
LAS Cobalto Road Bike Helmet
$149.00

Compact aerodynamic Italian road helmet with antibacterial padding.

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✅ In Stock SmartEVO Road Grip
Pirelli P Zero Race Classic Tan 700c Tire
$69.00

120 TPI casing with SmartEVO compound and TechBELT puncture protection.

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✅ In Stock Packable Shield
Nalini Arietta Windproof Vest
$55.00

Ultralight windproof front with packable breathable rear mesh.

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✅ In Stock Ergonomic Relief
Carbon Racing Saddle
$60.00

Central anatomic cutout relieves soft-tissue pressure on long rides.

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✅ In Stock Radar Safety Sensor
Garmin Varia RTL515 Radar Tail Light
$199.99

Detects approaching rear vehicles up to 153 yards with cockpit alerts.

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Dual-sided wattage systems and direct-drive trainers for race preparation.

✅ In Stock Dual-Sided Road Power
Favero Assioma Duo Power Pedals
$719.00

±1% power accuracy with instant ANT+/Bluetooth and 50h battery.

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✅ In Stock Dual-Sided Gravel & MTB
Favero Assioma Pro MX-2 SPD Pedals
$789.00

Rugged dual-sided SPD power meter pedals built for gravel durability.

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✅ In Stock 2200W & 25% Incline
Garmin Tacx NEO 2T Direct-Drive Smart Trainer
$899.99

Virtual flywheel with dynamic inertia and pre-installed Shimano/SRAM 9–11 body.

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