Register

Online Registration Deadline: Monday, Aug 7, 2023 at 10:00 PM CT

Select Your Category

Category Start Time Distance Field Limit Fee
100 Mile Youth 17 & Under FREE $0 7:00 AM 100 miles $0
  • Approximately 30 miles of pavement, 50 miles of gravel, 20 miles of singletrack.
    Category for Youth 17 and under on race day.
100 Mile Women 39 & Under $105 7:00 AM 100 miles $105
  • Approximately 30 miles of pavement, 50 miles of gravel, 20 miles of singletrack. Category for Women ages 39 and under on race day.
100 Mile Women 40-49 $105 7:00 AM 100 miles $105
  • Approximately 30 miles of pavement, 50 miles of gravel, 20 miles of singletrack. Category for Women ages 40-49 on race day.
100 Mile Women 50-59 $105 7:00 AM 100 miles $105
  • Approximately 30 miles of pavement, 50 miles of gravel, 20 miles of singletrack. Category for Women ages 50-59 on race day.
100 Mile Women 60 & Over $105 7:00 AM 100 miles $105
  • Approximately 30 miles of pavement, 50 miles of gravel, 20 miles of singletrack. Category for Women ages 60 and over on race day.
100 Mile Men 39 & Under $105 7:00 AM 100 miles $105
  • Approximately 30 miles of pavement, 50 miles of gravel, 20 miles of singletrack. Category for Men ages 30-39 on race day.
100 Mile Men 40-49 $105 7:00 AM 100 miles $105
  • Approximately 30 miles of pavement, 50 miles of gravel, 20 miles of singletrack. Category for Men ages 40-49 on race day.
100 Mile Men 50-59 $105 7:00 AM 100 miles $105
  • Approximately 30 miles of pavement, 50 miles of gravel, 20 miles of singletrack. Category for Men ages 50-59 on race day.
100 Mile Men 60 & Over $105 7:00 AM 100 miles $105
  • Approximately 30 miles of pavement, 50 miles of gravel, 20 miles of singletrack. Category for Men ages 60 and over on race day.
100 Mile Non-Binary 39 & Under $105 7:00 AM 100 miles $105
  • Approximately 30 miles of pavement, 50 miles of gravel, 20 miles of singletrack. Caterogry for Non-Binary ages 39 and under on race day.
100 Mile Non-Binary 40 - 49 $105 7:00 AM 100 miles $105
  • Approximately 30 miles of pavement, 50 miles of gravel, 20 miles of singletrack. Caterogry for Non-Binary ages 40 - 49 on race day.
100 Mile Non-Binary 50 - 59 $105 7:00 AM 100 miles $105
  • Approximately 30 miles of pavement, 50 miles of gravel, 20 miles of singletrack. Caterogry for Non-Binary ages 50 - 59 on race day.
100 Mile Non-Binary 60 & Over $105 7:00 AM 100 miles $105
  • Approximately 30 miles of pavement, 50 miles of gravel, 20 miles of singletrack. Caterogry for Non-Binary ages 60 and over on race day.
100 Mile Single Speed $105 7:00 AM 100 miles $105
  • Approximately 30 miles of pavement, 50 miles of gravel, 20 miles of singletrack.
100 Mile Fat Bike (3.5"+ Tire) Category $105 7:00 AM 100 miles $105
  • Fat Tire Bikes only, must have 3.5" tires or wider.
    Approximately 30 miles of pavement, 50 miles of gravel, 20 miles of singletrack.
100 Mile Three Person Team Women $105 7:00 AM 100 miles $105
  • Teams take off with mass start riders but must finish as a team. Last team rider across the line sets the finish time for that team. $105 per Rider
100 Mile Three Person Team Coed $105 7:00 AM 100 miles $105
  • Teams take off with mass start riders but must finish as a team. Last team rider across the line sets the finish time for that team. $105 per Rider
100 Mile Three Person Team Men $105 7:00 AM 100 miles $105
  • Teams take off with mass start riders but must finish as a team. Last team rider across the line sets the finish time for that team. $105 per Rider
50 Mile Youth 17 & Under FREE $0 8:00 AM 50 miles $0
  • Approximately 5 miles of pavement, 37 miles of gravel, 8 miles of singletrack.
    Category for Youth 17 and under on race day.
50 Mile Women 39 & Under $105 8:00 AM 50 miles $105
  • Approximately 5 miles of pavement, 37 miles of gravel, 8 miles of singletrack. Category for Women ages 39 and under on race day.
50 Mile Women 40-49 $105 8:00 AM 50 miles $105
  • Approximately 5 miles of pavement, 37 miles of gravel, 8 miles of singletrack. Category for Women ages 40-49 on race day.
50 Mile Women 50-59 $105 8:00 AM 50 miles $105
  • Approximately 5 miles of pavement, 37 miles of gravel, 8 miles of singletrack. Category for Women ages 50-59 on race day.
50 Mile Women 60 & Over $105 8:00 AM 50 miles $105
  • Approximately 5 miles of pavement, 37 miles of gravel, 8 miles of singletrack. Category for Women ages 60 and over on race day.
50 Mile Men 39 & Under $105 8:00 AM 50 miles $105
  • Approximately 5 miles of pavement, 37 miles of gravel, 8 miles of singletrack. Category for Men ages 39 and under on race day.
50 Mile Men 40-49 $105 8:00 AM 50 miles $105
  • Approximately 5 miles of pavement, 37 miles of gravel, 8 miles of singletrack. Category for Men ages 40-49 on race day.
50 Mile Men 50-59 $105 8:00 AM 50 miles $105
  • Approximately 5 miles of pavement, 37 miles of gravel, 8 miles of singletrack. Category for Men ages 50-59 on race day.
50 Mile Men 60 & Over $105 8:00 AM 50 miles $105
  • Approximately 5 miles of pavement, 37 miles of gravel, 8 miles of singletrack. Category for Men ages 60 and over on race day.
50 Mile Non-Binary 39 & Under $105 8:00 AM 50 miles $105
  • Approximately 5 miles of pavement, 37 miles of gravel, 8 miles of singletrack. Category for Non-Binary ages 39 and under on race day.
50 Mile Non-Binary 40-49 $105 8:00 AM 50 miles $105
  • Approximately 5 miles of pavement, 37 miles of gravel, 8 miles of singletrack. Category for Non-Binary ages 40-49 on race day.
50 Mile Non-Binary 50-59 $105 8:00 AM 50 miles $105
  • Approximately 5 miles of pavement, 37 miles of gravel, 8 miles of singletrack. Category for Non-Binary ages 50 - 59 on race day.
50 Mile Non-Binary 60 & Over $105 8:00 AM 50 miles $105
  • Approximately 5 miles of pavement, 37 miles of gravel, 8 miles of singletrack. Category for Non-Binary ages 60 and over on race day.
50 Mile Single Speed $105 8:00 AM 50 miles $105
  • Approximately 5 miles of pavement, 37 miles of gravel, 8 miles of singletrack.
50 Mile Fat Bike (3.5"+ Tire) Category $105 8:00 AM 50 miles $105
  • Fat Tire Bikes only, must have 3.5" tires or wider.
    Approximately 5 miles of pavement, 37 miles of gravel, 8 miles of singletrack.
50 Mile Three Person Team Women $105 8:00 AM 50 miles $105
  • Teams take off (time trial style) in 1 minute increments. The team rides the route together, stopping at checkpoints to gather their "proof" and then they must finish together. $105 per Rider
50 Mile Three Person Team Coed $105 8:00 AM 50 miles $105
  • Teams take off (time trial style) in 1 minute increments. The team rides the route together, stopping at checkpoints to gather their "proof" and then they must finish together. $105 per Rider
50 Mile Three Person Team Men $105 8:00 AM 50 miles $105
  • Teams take off (time trial style) in 1 minute increments. The team rides the route together, stopping at checkpoints to gather their "proof" and then they must finish together. $105 per Rider
25 Mile core4 Crew Ride Youth 17 & Under FREE $0 9:00 AM 25 miles $0
  • Mass Start fun ride for all to enjoy. Join the Crew! Approximately 25 miles of pavement, gravel, and b-roads.
25 Mile core4 Crew Ride $50 9:00 AM 25 miles $50
  • Mass Start fun ride for all to enjoy. Join the Crew! Approximately 25 miles of pavement, gravel, and b-roads.
Friday and Saturday Night FREE Camping! $0 3:00 PM 200 $0
Volunteer! Keep me in the loop on how to help with core4! $0 see event details $0
  • Volunteer options include course setup, packet pickup, checkpoints, course crossings, Wilson's setup/teardown, and much more! Sign up to volunteer and we will contact you with options.

Purchase Event Items

Add event items for purchase to your registration. You can also purchase items without registering.

Remove

core4 T-Shirt - $25

Unisex Tri-blend T-Shirt

-+
Add

Location & Contact

Location address:
4823 Dingleberry Rd NE, Iowa City, IA  52240
Event Website
http://www.core4.bike
Contact Us

Other Events from this Director

 

core4 backside

Iowa City IA
May 28, 2023