Race Details

The 23rd Annual Grasslands Trail Run will be held on Saturday, March 19, 2022.

Race Details

All races will start and end at TADRA Point Trailhead. Directions here.

Complete details will be found in the 2021 race guide.

Mask Guidance – 2021 Race

The LBJ National Grasslands is owned by the United States Government and managed by the USDA Forest Service. The Mask Requirements for this year’s race were enacted in accordance with their policy. For more information, see the “Mask Guidance” section on the USDA Coronavirus website.

We realize that Governor Abbott and the State of Texas has rescinded the statewide mandate. However, the federal government has not. Think of this as if you were entering one of the numerous businesses that are still requiring customers to wear masks.

Thank you for your cooperation in this matter.

For 2021 there will be no IN PERSON registration at packet pick up or on race day. Please do not come to the race unless you have already registered. You will be turned away.

Race Distance Changes ONLY allowed before March 17th, 2021. No Exceptions! If you need to change your distance you can make this change on your own by clicking on “Edit Order” on your registration confirmation email.

Race Schedule

Thursday, March 18

Packet Pick up
Bear Creek Running Company
121 Rufe Snow Dr.
Suite 103
Keller, TX 76248
4:00 – 6:00 p.m.

Friday, March 19

Packet Pick up

TADRA Point Trailhead

Fs 904
Alvord, TX 76225
3:00 – 6:30 p.m.

Saturday, March 20

For 2021 we will assign staggered starting times to reduce high traffic areas and control the flow of people at same day packet pickup and at the starting line. Starting times will be ordered with faster runners towards the front, ordered by the predicted finish time in UltraSignup. Anyone who registers after we publish start times will be ordered at the end regardless of what UltraSignup predicts. These decisions were made under the advisement of our timing vendor who has managed the start/finish line at several trail races over the last year, including Bandera and Rocky Raccoon.

We do not anticipate the start time assignments for any race to impact the cutoffs for any event.

You can start the race at any time during your assigned range. When you are ready to begin, you will enter the timing chute, pick up your timing chip and cross the timing mat to begin your race.

The following are the time ranges starting times will be assigned from:

6:00 a.m. – 6:15 a.m. 50 Mile
7:20 a.m. – 8:00 a.m. Marathon
7:45 a.m. – 8:45 a.m. Half Marathon

* This year’s race will be 100% chip timed (In normal years race start is gun timed).

All participants will receive a race bib, race shirt, and a Blaze Trails Running buff (2021 race).

All finishers will earn a finisher’s medal, unique to their race distance.

The top 3 male and female finishers, and the top Master’s finisher (40+), in all three distances will earn prizes.

With the 2021 race being chip timed due to our COVID-19 mitigation plan, all awards will be mailed after the event. Please be patient as we will need to verify top finishers.

Trail Information

The Grasslands Trail Run is held in the Lyndon B. Johnson National Grasslands, more than 20,000 acres managed by the U.S. Forest Service and situated north of Fort Worth. The trails loop among rolling hills and through a mixture of pine and oak grove forests, open fields, and livestock.

The race uses a series of trails that start and finish at TADRA Point Trailhead. The half marathon uses the blue trail; the marathon uses the white and blue trails; and 50-mile runners will start with a correction loop, followed by the blue, white, yellow and red trails. The course map shows all loops with aid stations marked.

Aid Stations

This is a cupless race. Please bring your own hydration device to carry and consume fluids on the course. Water a will be available at all aid stations along with many food items such as bananas, potato chips, Oreos, fig cookies, soda, Salt Stick and much more.

For 2021 we will not have any communal food (i.e. boiled potatoes) and will reduce items that require significant food prep (i.e. PB&J, etc..) at remote aid stations to allow the aid station volunteers to focus more on providing hydration to participants.

Drop Bags

For the 2021 race drop bags are allowed ONLY for 50 mile race participants at the Start/Finish aid station. Please make sure your drop bags are water resistant as we cannot guarantee that they will not get wet in case of inclement weather. Many options are available, anything from dry bag to a zip-lock bag. All drop bags should be labeled last name, first name. Optionally add your bib number if you come to early packet pickup. Remember to pick up your drop bag at the end of the race. All drop bags left will be discarded after the race.

Time Cut Off

50 Mile

  • Participants must leave the TADRA Point – Start/Finish Aid Station (mile 45.6) by 5:45 PM to start the final out and back segment. This means participants should be able to reach mile 45.6 in between 11:25-11:45 (depending upon your starting time slot) this is between a 15:01-15:27 min/mile pace.
    *Please Note for the 2021 race the out and back segment will be run at the end of the race instead of the beginning.
  • Participants who do not meet these cut-offs will be politely removed from the course.


  • Participants must reach the Red Ant Pond aid station before it closes at 2:00 PM.
  • Marathon participants should be able to reach this aid station (mile 22.9) within 6 1/2 hours (17:02 min/mi pace.)
  • Half-Marathon participants should be able to reach this aid station (mile 10.1) within 5 1/2 hours (32:40 min/mi pace.)


Historically in ultramarathon races pacers have be allowed only in the late stages of a race for the safety of the runner. Typically this is only in 100 mile races or a more difficult 100K race where most participants finish in the dark. While we do not expect any runner to finish the 50 mile race in the dark, we do recognize the value of a pacer for any runner struggling in the later stages of a race. Because of this we are implementing a policy that establishes a hard start time after which pacers can accompany runners.

For the 2021 edition of the race, pacers are only allowed for 50 mile runners. Pacers can only be picked up from the Start/Finish Aid Station at TADRA Point after 4:00 PM. No exceptions. Violation of this policy will result in disqualification. Runners with pacers cannot earn any top place finish. Check the standings before leaving on your final loop.

Registration and Refund Policy

We understand that things come up. If you can no longer run the race, if you let us know more than one month in advance, you will receive 100% race credit for another Blaze Trails Running event. If you let us know between one month and two weeks prior to race day, you will receive 50% race credit towards another Blaze Trails Running event. We will not allow any refunds or transfers less than two weeks before race day. No exceptions.

We allow changes in race distance as long as we still have openings in that distance. If you are moving to a longer distance, you will need to pay the difference. If you are moving to a shorter distance, you will not get that difference back.

Bib transfers to another runner are allowed up until the two weeks prior to the race only if the race has not sold out. If you are interested in transferring your bib to another person, please contact us immediately. It is very important for the safety of all runners that we have the correct contact and medical information. If the shirt order has already been placed, the person you transfer to agrees to accept the shirt size that you ordered. A $15 administration fee (plus transaction fee) will be charged to the person who is accepting the bib transfer. We do not allow transfers if the event has sold out and have a wait list. In that case, we will follow the posted refund policy and allow the next person on the wait list to register. We require transfers to be completed no later than two weeks prior to the race. This allows us to keep our focus on producing the event and other important race details during the race week. If you contact us in the last two weeks to ask for a transfer, we will not reply and the transfer is not allowed. No exceptions.

Refund and/or transfer requests must be made in writing by sending an email to info@blazetrails.com. Refunds are only processed as credit to a future event.

I further understand that I am not entitled to a refund if the race director and/or race officials are forced to cancel the race due to any participant safety issue on the course that is out of the race organizer’s control. This may include, but is not limited to flooding, lightning or any other weather condition that makes the course unsafe for participants.

Course Records

50-Mile: Jack Finn, 6:32:57, 2017; Shandra Moore, 7:53:13, 2017

Marathon: Todd Reynolds, 3:01:33, 2006; Melanie Rabb, 3:32:47, 2017

Half Marathon: Joshua Pauley, 1:21:48, 2013; Sarah Reardon, 1:30:29, 2004