5 running events in Granite Bay, California

Lost Trail 5K & Half Marathon Trail Runs

The Lost Trail 5K and Half Marathon have beautiful and very well-marked courses on single track trails along the shoreline of Folsom Lake with many scenic views. Both races have well stocked friendly aid stations.

Back in 2026: Lost Trail Finisher Medals!

Event details and schedule

The Lost Trail Half Marathon & 5K

Granite Beach, Folsom Lake SRA

The Lost Trail 5K and Half Marathon have very well-marked courses that offer scenic lake views with lots of beautiful wildflowers in between the aid stations.

Back in 2026: Lost Trail Finisher Medals! Custom Lost Trail soft-cotton race shirts are available for pre-order sale before the race for $20.

First place Overall Male and Female in The Lost Trail 5K & Half Marathon will receive Overall Champion Awards. There will be awards three deep in each ten-year age group for The Lost Trail Half Marathon and the 5K Run.

Packets available at the race site from 7 am to 8 am.

Race Day Schedule

7:00 Registration/Packet Pick up opens

7:00 Race announcements begin

8:00 Start of the Lost Trail Half Marathon

8:10 Start of the Lost Trail 5K

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.

Find out about our RACE for FREE Volunteer program by emailing: Volunteers@totalbodyfitness.com.

Race fees increase on race day.

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 Volunteers@totalbodyfitness.com as our volunteer positions will fill up quickly.

Mighty Dog 5K & 10K Trail Runs

Granite Beach, Folsom Lake SRA

The Mighty Dog Trail Runs are in their 11th year in 2026. The event offers two distances: 5K & 10K - both for walkers, runners, and their dogs! We are excited to offer this event for athletes and their dogs and hope everyone has a fun time. Back in 2026: The Mighty Mile run for your Senior Dog.

Event details and schedule

Mighty Dog 5K & 10K Trail Runs

Granite Beach, Folsom Lake SRA

The Mighty Dog 5K & 10K races will start from Granite Beach parking area at Folsom Lake SRA. The 5K course will have one aid station at the half way point with water for both walkers and their dogs.

Back this year is the Mighty Mile. A one-mile dog freindly course for walkers and runners to bring their dear old friend along.

All Mighty Dog athletes will recieve a Mighty Dog Finisher Medal, and their dog a Mighty Dog Finisher Bandana at the finish line. Additional dogs can be signed up to accompany the walker and dog #1 for a fee of $10 per dog. Each additional dog will receive a Finisher Bandana.

Athletes and their dogs MUST run safely and without entangling other dogs. The course will have one aid station at the half way point for both walkers and their dogs.

Commemorative Mighty Dog race shirts are available for $20.

Awards will be presented as follows:

First, second, and third place in each of three divisions for the Mighty Dog 5K & 10K Run:

Small Dog (up to 25 lbs), Medium Dog (26 to 60 lbs) and Large Dog (61 lbs+) will each receive an award. There will also be awards for top Runners with no dogs in the 5K and 10K. No Awards for the Mighty Dog Mile.

Race fees increase on race day.

Event Schedule:

Registration opens - 7 a.m.

The Mighty Dog 10K Run - 8:00 a.m.

The Mighty Dog 5K - 8:10 a.m.

The Mighty Mile - 8:15 a.m.

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. Race transfers are allowed from one TBF Racing event to another within a one-year time frame. There is a $25 transfer fee.

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 Volunteers@totalbodyfitness.com as our volunteer positions will fill up quickly.