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 6:30 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.