Choose from 1) LIVE 5K Run/Walk 2) VIRTUAL (Pick your distance, date and location)

Live 5K starts at 10 am (Awards presented at approximately 11:15 am)

ONLINE REGISTRATION CLOSES Wednesday March 26th at 6 pm, after that time you can only register in person at packet pickup (Thursday or Friday). No race day registrations will be accepted.

T-Shirts not guaranteed if not registered by March 11th 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, 2025). Get $5 off EACH Spring Thaw 2025 race entry for your family!

Please register here first before completing your race entries: 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 (Thursday) 4 pm - 6 pm and March 28th (Friday) 12 pm - 6 pm. (Peak Performance is located at 4501 Southern Hills Dr, Suite 19, Sioux City

Race Day (Saturday, March 29th) Packet Pickup: 9:00 am - 9:45 am The Bent Prop at MRBC at 1085 Council Oak Drive in Sioux City (behind the ball fields in Riverside Park)

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.

Race Day Packet pickup, post-race refreshments and Post Race Awards will be inside the The Bent Prop at MRBC at 1085 Council Oak Drive in Sioux City (behind the ballfields in Riverside Park)

Overall Awards and age group medal winners will be presented for the LIVE Event 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

Links to results will be posted on Facebook and www.missouririverrunners.com/?event=spring-thaw

Please share your pictures and videos on Missouri River Runners social media!

For event-related questions, please click on the Contact the Organizers button on the left-hand side of this page.