From big races to Saturday morning group runs—find duathlon events and connect with the local endurance sports community.
Happy Kids Duathlon Series
The Happy Kids Duathlon is for boys and girls 5 to 14 years of age. Each race features a 1 mile run - 3 mile road bike - 1 mile run course.
The Series will have five races in 2026. This is a great early-season race for young triathletes, cross country runners and cyclists.
Event details and schedule
The Happy Kids Duathlon #4
Granite Beach, Folsom Lake SRA
This race offers young athletes a chance to run and bike together in one-fun-race! The course is 1 mile run followed by a 3 mile road bike on roads closed to traffic and a final 1 mile run. Included for each competitor is a custom Happy Kids/TBF Running Hat and athlete goody bag with product samples, plus a post race meal of hot soup or chili with fruit, cookies and beverage.
The March 21st Happy Kids Duathlon will be the final race in our five Race Happy Kids Duathlon Series for which we will have Series Champions in each 2-year age group (5-6, 7-8, 9-10, 11-12, 13-14). Finishers at each race will receive a TBF Finisher Button.
To be eligible for the Series Championship athletes must race in all four of the events. Athletes racing in all four Happy Kids Duathlons will receive a Series Finisher Medal.
Course Description:
Run – The 1 mile run course will run on granite paths for a short loop before returning to the Transition Area where the bikes are set up.
Bike - The bike course is course located entirely within the park on roads closed to traffic. It will exit the parking lot area at GraniteBeach then complete a 3 mile loop within the park.
Run – The 1 mile run will run on granite paths, single track trails, with an aid station at the start of the run and the half way point.
Transition Area - The Transition area will be on a first-come basis. The transition area at all TBF Racing events is for athletes only. All non-athletes must remain outside of the transition area at all times on race day. Bodymarking will be take place at the entrance to the transition area and must be completed before you enter the transition area. Glass or bottles are not allowed in the transition area.
Divisions/Awards - For the Happy Kids Duathlon there will be 2-year age groups for boys and girls 5 to 14 years old. These age groups will be: 5-6, 7-8, 9-10, 11-12, 13-14. Awards will be presented three-deep in each 2-year age group. Each finisher will receive a TBF Finisher Button.
For the four Race Series, athletes racing in all four of the events will be eligible for Series Championship Awards. Athletes changing age groups during the Series will finish the Series in their earlier age group.
Schedule of Events: Saturday March 21st
7 am Registration/Packet Pick up opens
7 am Transition Area opens
7:30 am Race announcements begin
8:30 am Start of Happy Kids Duathlon
10:00 am Start of Awards ceremony for Happy Kids Duathlon
Race fees increase on race day.
Refund and Transfer Information
TBF Racing has a No Refund policy on all of our events. A Refund requested prior to race week will be given a TBF Race credit for the amount of the entry fee minus a $25 processing fee. Credits are not given during race week. Transfers are allowed from one TBF Racing event to another within a one-year time frame. There is a $25 transfer fee. Transfers are not allowed during race week. ALL TBF Racing events are held Rain or Shine.
Race for FREE Information
Our Race for FREE Athlete Volunteer Program offers a chance to get involved with multi-sport events, have fun, and earn a $50 TBF Racing Volunteer voucher good towards entry fees at any of our events this year. Each volunteer shift is 4 hours. We ask volunteers to reserve a volunteer position at any of our events by emailing [email protected] as our volunteer positions will fill up quickly.
The New Year's Duathlon and 5K Trail Run
Run, Bike, and Run in the New Year with TBF at Granite Beach, Folsom Lake.
Event details and schedule
New Year's Duathlon & 5K Trail Run
Granite Beach, Folsom Lake SRA
Our New Years Duathlon has a 2 mile run - 5 mile bike – 2 mile run course for Individuals or 2-Person Relay Teams, and we have the New Year's 5K Trail Run on a beautiful and fun course with nature trails and lake views.
For the New Years Duathlon there will be an Overall Champion prize for the first overall male and female finisher along with Top Three awards in each 10-year Age Group. Overall Results will be posted for all finishers.
For the New Year’s 5K Run there will be an Overall Champion prize for the first overall male and female finisher along with Top Three awards in each 10-year Age Group. Overall Results will be posted for all finishers.
Courses.
Run - The 2 mile run course is the same for both legs of the race. The course will run on granite paths, single track trails, and a small section on pavement with an aid station at the start of the run and the half way point.
Bike - The 5 mile road bike course is on closed roads within Folsom Lake State Park. Care should be taken on several sharp turns so as not to exceed safe speed limits.
5K - The New Year's 5K course is a gentle rolling course on trails along the lake shoreline with beautiful views with freindly aid stations and lots of signs marking the course.
After the New Years Duathlon & 5K Run, hot soup along with cookies and fruit will be available to all competitors free of charge. The New Year's Duathlon & 5K Run are fundraising events for Maria and Joseph's Ministry to the Poor, the Official Charity of TBF Racing.
Pre-order your New Years Duathlon & 5K long-sleeved tech-tee shirt (available in XS, SM, MED, LG, XL and XXL) for only $30 and pick it up on race morning! Your purchase helps supports our official Charity! Must be pre-ordered prior to December 27th.
Race Day Schedule
6:30 am Transition area and Registration open
7:30 am Race announcements begin
8:00 am Start of the NY's 5K Run/Walk
8:30 am Race information announcement for New Year's Duathlon
9:00 am Start of New Year's Duathlon
TBF Racing always needs volunteers to help keep our events organized, safe, and fun. If you or a friend would like to volunteer, please email [email protected].
Refund and Transfer Information
TBF Racing has a No Refund policy on all of our events. A Refund requested prior to race week will be given a TBF Race credit for the amount of the entry fee minus a $25 processing fee. Credits are not given during race week. Transfers are allowed from one TBF Racing event to another within a one-year time frame. There is a $25 transfer fee. Transfers are not allowed during race week. ALL TBF Racing events are held Rain or Shine.
The Double Duathlon
The Double Duathlon race is a one-of-a-kind multisport event. It takes place at beautiful Granite Beach, Folsom Lake SRA and features three runs and two bikes! It starts with a 2 mile run, then a 5 mile road bike, then a 2 mile run, then a 5 mile road bike, then a final 2 mile run.
Event details and schedule
The Double Duathlon
Granite Beach, Folsom Lake SRA
The Double Duathlon features a run-bike-run-bike-run course with all three runs on trails and both bike legs on closed roads.
Included for each athlete is a custom TBF Running Hat.
Awards are for 1st through 3rd place in each age group for the Double Duathlon and 1st overall for Relay Team Divisions of Male, Female, and Coed.
Double Duathlon Distance - 2 mile run-5 mile road bike-2 mile run-5 mile road bike-2 mile run.
Three runs and two bikes! All three runs are the same and are mostly on trails. The bike legs are one lap on a road course closed to traffic winding through the scenic oak forests along the shoreline of Folsom Lake.
Relay Teams
Relay Teams consist of one cyclist and one runner. Entry fee includes two race visors and post race meals. Awards will be first overall in Male, Female and Coed divisions for the Double Duathlon.
Packet Pick Up Information
Race packets will be available race morning from 8 am to 10 am at the race site.
Event Schedule:
8:00 a.m. Registration/Packet Pick up opens
9:30 a.m Race announcements begin
10:00 a.m. Start of Double Duathlon
Refund and Transfer Information
TBF Racing has a No Refund policy on all of our events. A Refund requested prior to race week will be given a TBF Race credit for the amount of the entry fee minus a $25 processing fee. Credits are not given during race week. Transfers are allowed from one TBF Racing event to another within a one-year time frame. There is a $25 transfer fee. Transfers are not allowed during race week. ALL TBF Racing events are held Rain or Shine.
Race for FREE Information
Our Race for FREE Athlete Volunteer Program offers a chance to get involved with multi-sport events, have fun, and earn a $50 TBF Racing Volunteer voucher good towards entry fees at any of our events this year. Each volunteer shift is 4 hours. We ask volunteers to reserve a volunteer position at any of our events by emailing [email protected] as our volunteer positions will fill up quickly.
Happy Kids Duathlon Series
The Happy Kids Duathlon is for boys and girls 5 to 14 years of age. Each race features a 1 mile run - 3 mile road bike - 1 mile run course.
The Series will have five races in 2027. This is a great early-season race for young triathletes, cross country runners and cyclists.
Event details and schedule
The Happy Kids Duathlon #5
Granite Beach, Folsom Lake SRA
This race offers young athletes a chance to run and bike together in one-fun-race! The course is 1 mile run followed by a 3 mile road bike on roads closed to traffic and a final 1 mile run. Included for each competitor is a custom Happy Kids/TBF Running Hat and athlete goody bag with product samples, plus a post race meal of hot soup or chili with fruit, cookies and beverage.
The March 20th Happy Kids Duathlon will be the final race in our five Race Happy Kids Duathlon Series for which we will have Series Champions in each 2-year age group (5-6, 7-8, 9-10, 11-12, 13-14). Finishers at each race will receive a TBF Finisher Button.
To be eligible for the Series Championship athletes must race in all five of the events. Athletes racing in all five Happy Kids Duathlons will receive a Series Finisher Medal.
Course Description:
Run – The 1 mile run course will run on granite paths for a short loop before returning to the Transition Area where the bikes are set up.
Bike - The bike course is course located entirely within the park on roads closed to traffic. It will exit the parking lot area at GraniteBeach then complete a 3 mile loop within the park.
Run – The 1 mile run will run on granite paths, single track trails, with an aid station at the start of the run and the half way point.
Transition Area - The Transition area will be on a first-come basis. The transition area at all TBF Racing events is for athletes only. All non-athletes must remain outside of the transition area at all times on race day. Bodymarking will be take place at the entrance to the transition area and must be completed before you enter the transition area. Glass or bottles are not allowed in the transition area.
Divisions/Awards - For the Happy Kids Duathlon there will be 2-year age groups for boys and girls 5 to 14 years old. These age groups will be: 5-6, 7-8, 9-10, 11-12, 13-14. Awards will be presented three-deep in each 2-year age group. Each finisher will receive a TBF Finisher Button.
For the five Race Series, athletes racing in all five of the events will be eligible for Series Championship Awards. Athletes changing age groups during the Series will finish the Series in their earlier age group.
Schedule of Events: Saturday March 20th
7 am Registration/Packet Pick up opens
7 am Transition Area opens
7:30 am Race announcements begin
8:30 am Start of Happy Kids Duathlon
10:00 am Start of Awards ceremony for Happy Kids Duathlon
Race fees increase on race day.
Refund and Transfer Information
TBF Racing has a No Refund policy on all of our events. A Refund requested prior to race week will be given a TBF Race credit for the amount of the entry fee minus a $25 processing fee. Credits are not given during race week. Transfers are allowed from one TBF Racing event to another within a one-year time frame. There is a $25 transfer fee. Transfers are not allowed during race week. ALL TBF Racing events are held Rain or Shine.
Race for FREE Information
Our Race for FREE Athlete Volunteer Program offers a chance to get involved with multi-sport events, have fun, and earn a $50 TBF Racing Volunteer voucher good towards entry fees at any of our events this year. Each volunteer shift is 4 hours. We ask volunteers to reserve a volunteer position at any of our events by emailing [email protected] as our volunteer positions will fill up quickly.