Event details
- Saturday | March 28, 2026
- 10:00 am - 12:00 pm
- 1132 Larsen Park Rd, Sioux City, IA 51103
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Registration
Please visit the registration link to sign up: Spring Thaw Registration
Race Information
Choose from 1) LIVE 5K Run/Walk 2) LIVE 10K Run 3) VIRTUAL (Pick your distance, date and location)
Live races starts at 10 am
ONLINE REGISTRATION CLOSES Wednesday March 25th at 12 pm, after that time you can only register in person on race day between 8:30 am and 9:30 am. Raceday registrations will be $45 for either distance.
T-Shirts not guaranteed if not registered by March 10th at Midnight, there will not be a second shirt order.
Join Missouri River Runners for $15 for your entire household yearly membership (Jan 1 thru Dec 31, 2026). Get $5 off EACH Spring Thaw 2026 race entry for your family!
Please register here first before completing your race entries: http://getmeregistered.com/MRR
Note: All membership discounts will be verified prior to picking up your packet. No race entry transfers or refunds.
Peak Performance Packet Pickup: March 27th (Friday) 12 pm – 6 pm. (Peak Performance is located at 4501 Southern Hills Dr, Suite 19, Sioux City. Race Day (Saturday, March 28th) Packet Pickup: 8:30 am – 9:45 am The Hilton Garden Inn Sioux City Riverfront Lobby at 1132 Larsen Park Rd, Sioux City, IA.
After running, post a photo or video and share your virtual race experience on Missouri River Runner social media.
VIRTUAL PARTICIPANTS:
Run or walk your distance anywhere and anytime you choose: trail, sidewalk or treadmill! (Be sure to follow runner safety!)
After running, post a photo or video and share your virtual race experience on Missouri River Runner social media.
Packet Pickup
Peak Performance Packet Pickup: March 27th (Friday) 12 pm – 6 pm. (Peak Performance is located at 4501 Southern Hills Dr, Suite 19, Sioux City.
Race Day (Saturday, March 28th) Packet Pickup: 8:30 am – 9:45 am The Hilton Garden Inn Sioux City Riverfront Lobby at 1132 Larsen Park Rd, Sioux City, IA.
Awards
Overall Awards and age group medal winners will be presented for the LIVE Events only.
Overall Male, Overall Female, Masters Male, Masters Female
Age Group Categories:
14 & Under, 15-19, 20-24, 25-29, 30-34, 35-39, 40-44, 45-49, 50-54, 55-59, 60-64, 65-69, 70 & Over
Previous Race Results
2016
5K – Overall
5K – Age Groups
10 Mile – Overall
10 Mile – Age Groups
2017
5K – Overall
5K – Age Groups
10 Mile – Overall
10 Mile – Age Groups
2018
5K – Overall
5K – Age Groups
10 Mile – Overall
10 Mile – Age Groups
2019
5K – Overall
5K – Age Groups
10 Mile – Overall
10 Mile – Age Groups
2020
5K – Virtual
10M – Virtual
2021
5K – Overall
5K – Age Groups
5K – Virtual
10M – Virtual
2022
5K – Overall
5K – Age Groups
5K – Virtual
10M – Overall
10M – Age Groups
10M – Virtual
2023
5K – Overall
5K – Age Groups
10M – Overall
10M – Age Groups
2024
5K – Overall
5K – Age Groups
10M – Overall
10M – Age Groups
2025
5K – Overall 5K – Age GroupsQuestions? Send a message to the race director!
