2026 edition
Entry options are not yet confirmed for this edition. Check the organiser before making plans.
Modelled energy-cost change -2.3% versus flat · net elevation -101 m
Decision summary
Lower than 97% of comparable mapped races
4:00:00 total limit divided by distance. Check gun/chip timing and intermediate limits; allow time for stops.
Historical race-date favourability, not a forecast
Stored GPS route
Quick answers
raceindex.org has a GPS course file for Spurs Austin International Half (fka 3M Half Marathon) Relay, so runners can inspect the route line on the map. Elevation charts and ascent figures appear only when that file includes usable elevation data.
The Spurs Austin International Half (fka 3M Half Marathon) Relay route has 42 m of ascent, 143 m of descent and an estimated -2.3% grade-adjusted pace penalty versus a flat route.
The setting includes city and riverside.
Gear check on buses lined up along Stonelake Blvd by the Gateway Theater; opens 5:30 a.m. on race morning. Clear bag with bib number required. Course fully supported on closed/managed roads with rolling closures; course remains open for 4 hours. Live music on course and at the finish line festival.
Its normalised GAP factor is -2.3% slower than a flat course, with about 42 m of total ascent.
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