Trailway Trail Race
Oct 10Somerville, TX50K, Marathon +3
Also a marathon, 80 mi from 2026 HARRA Warm-Up Series Bundles (Round 2), registration open
Aid stations, cutoffs and pacing in one plan, with the timeline your crew follows. Crew invites and race-day updates come with a Race Pass.
Build my planMarathon & Half Marathon Warm-Up Series Bundles
Born in 1986, the HARRA Warm-up Series has consisted of races executed by organizations that dedicate part of their proceeds to support local charities. In fact, in the early days, proceeds from the events went to help install the trail lights in Memorial Park.
Those preparing for the marathon find the gradually increasing distances of 10M, Half Marathon, 25K, and 30K spaced about a month apart, ideal for marathon training. The Half Marathon warm-up series also follows a progression of 5K, 10K, and 10M races before ending with a 10K that can be a race pace trial.
Although each race provides registration on individually managed sign-up pages, the HARRA bundles provided here offer a simple means of signing up for all races at once with a discounted total price, organized courtesy of the Houston Area Road Runners Association.
Round 2 bundles include all of the same races except the Space City 10-Miler.
Bundles are priced based on early tier prices for each of the events below. The price is fixed with no price tiers.
This year's events:
Space City 10 Miler & 5K
October 11, 2026
UTHealth Houston Half Marathon & 10K
October 25, 2026
Houston 25K & 10-Mile
November 22, 2026
Coach Andy Stewart's 30K & 10K
December 13, 2026
The series leads up to the Chevron Houston Marathon and Aramco Half Marathon on January 17, 2027.
Disclaimers:
1. The HARRA Warm-Up Series is not directly affiliated with the Chevron Houston Marathon or related entities.
2. Please direct all inquiries on the Warm-Up Series to the contact listed on this event page or to the individual races included in the series, as needed.
3. The bundle options are offered as-is. The combined total is already discounted, so no coupons will be offered for this registration option. Individual races may provide discounts for their events, but those will only apply to the associated event's direct registration page.
Registration opens
Apr 10, 2026
Standard ends
Oct 9, 2026
Race day
Oct 11, 2026
Registration closes
Oct 12, 2026
Standard ends
Oct 12, 2026
Marathon Warm-Up Series
Standard, until Oct 9, 2026
$285
Marathon Mini Warm-Up Series
Standard, until Oct 12, 2026
$230
Half Marathon Warm-Up Series
Standard, until Oct 9, 2026
$210
Half Marathon Mini Warm-Up Series
Standard, until Oct 12, 2026
$175
Registration openings and major changes, like a new date or a cancellation.
Can't race, or need an entry? Post it here so nobody has to ask if it's still available.
Oct 10Somerville, TX50K, Marathon +3
Also a marathon, 80 mi from 2026 HARRA Warm-Up Series Bundles (Round 2), registration open
Oct 10Bastrop, TXBackyard Ultra, 50K +7
Also a marathon, 123 mi from 2026 HARRA Warm-Up Series Bundles (Round 2), registration open
Oct 17Burnet, TX50K, Marathon +3
Also a marathon, 1 week after 2026 HARRA Warm-Up Series Bundles (Round 2), registration open
Nov 7Temple, TXMarathon, Half Marathon +2
Also a marathon, 150 mi from 2026 HARRA Warm-Up Series Bundles (Round 2), registration open
Straight-line distance
Oct 10Del Rio, TXMarathon
Oct 10Bastrop, TXBackyard Ultra, 50K +7
Oct 10Denison, TX50K, Marathon +3
Oct 10Somerville, TX50K, Marathon +3
Oct 16Wichita Falls, TXMarathon, Half Marathon +1
Oct 17Burnet, TX50K, Marathon +3
Oct 17Houston, TX10K, 5K
Oct 24Marble Falls, TX50 mi, 12 hr +5
Oct 25Lubbock, TXMarathon, Half Marathon +2
Oct 31Farmersville, TX50K, Marathon +3
Nov 7Fort Worth, TXMarathon, 20 mi +3
Nov 7Temple, TXMarathon, Half Marathon +2
Oct 10Houston, TX2 mi
Oct 10Houston, TXHalf Marathon, 10K +2
Oct 10Houston, TXHalf Marathon, 10K +2
Oct 10Houston, TX5K
Oct 10Houston, TX10K
Oct 10Houston, TX10K, 5K
Oct 11Houston, TX10 mi, 5K
Oct 16Houston, TX5K
Oct 17Houston, TX5K
Oct 17Houston, TXHalf Marathon, 6.55 mi +2
Oct 17Houston, TX10K, 5K
Oct 10Victoria, TXHalf Marathon, 5K
Oct 10Austin, TXHalf Marathon, 10K +2
Oct 10Galveston, TXHalf Marathon, 6.55 mi +2
Build your aid station plan, organize your crew, and dial in your nutrition strategy. Everything you need to finish strong.
Build my planAre you the race director for 2026 HARRA Warm-Up Series Bundles (Round 2)?
Claim this race to manage registration, volunteers, and race day.