Harlon Block Half Marathon
Race Day Weather
Warm start, breezy conditions
Runners will face a temperature rise from 68°F at the start to 73°F by finish, with a humidity of 61% and a dew point of 59°F. Winds will be moderate at 18 mph from the SE, which may impact pacing. Adjusting pace conservatively is advisable to manage heat as temperatures climb.
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Race Info
The Harlon Block Half Marathon debuts in Weslaco, Texas on November 8, 2026, starting and finishing at Harlon Block Sports Complex. The race is named for Harlon Block, a Weslaco native and Marine who helped raise the flag atop Mount Suribachi during the Battle of Iwo Jima in 1945. Alongside the standard half marathon, runners can enter the Harlon Block Memorial Ruck, a weighted-pack division on the same course. Proceeds from both events go toward a permanent memorial statue for Block that broke ground in Weslaco in February 2026.
