Urban refuge
Despite surrounding development, the park still supports wildlife and a broad mix of habitats. Listen and look most carefully where woodland edges meet clearings and drainage features.
Hiking field guide · San Antonio
McAllister Park Loop
The Blue Loop traces a long urban-wildland circuit through live-oak and juniper woodland, grass openings, pale limestone soil, and the upper Salado Creek watershed.
Hero image is an original decorative interpretation, not a documentary photograph.
RouteBlue Loop
Distance6.2-mile loop*
DifficultyModerate*
Elevation gainAbout 229 feet*
Why this hike matters
A substantial nature circuit inside the city.
McAllister Park protects 976 acres on San Antonio's north side. Its long natural-surface trail network offers a useful view of how woodland, grassland, drainage, recreation, and flood-control infrastructure coexist in a heavily developed urban landscape.
Long-loop rhythm
The Blue Loop is long enough for habitat changes to become apparent. Notice differences in shade, soil depth, exposed limestone, plant density, and human activity around the perimeter.
Shared trail
McAllister's natural trails are used by hikers, runners, and mountain bikers. Stay alert at curves and intersections, keep right when practical, and yield predictably.
Route notes
Follow blue—and keep the map close.
Blue Loop
The official City map marks the long perimeter route in blue. The commonly recorded hiking route is 6.2 miles; GPS totals can vary with parking, connectors, and missed turns.
Navigation
The network has many crossings and optional spurs. Download or photograph the official map before starting and confirm each junction rather than relying on color alone.
Surface
Expect natural trail with limestone, roots, loose rock, exposed sections, and occasional mud after rain. The modest total climb is spread across rolling terrain.
Shorter alternatives
The official map also shows shorter paved and natural routes. Use those when heat, daylight, trail traffic, or footing makes the full Blue Loop a poor choice.
Community observations
Nature Spotted
Explore place-specific records for McAllister Park before or after walking the Blue Loop.
eBird Hotspot
Browse checklists and recent bird sightings reported for McAllister Park (HOTE 090).
iNaturalist place
Explore community observations of plants, insects, birds, mammals, fungi, and other organisms within the mapped McAllister Park place.
What to notice
Compare woodland and grass-edge birds, flowering plants and pollinators, limestone-loving species, tracks near quiet trail edges, and seasonal changes around drainage areas.
Observation boundaryCommunity identifications can change. Observation records do not override park hours, trail conditions, wildlife cautions, or access rules.
Source ledger
Follow the originals.
Sources checked September 10, 2026.
- City of San Antonio · McAllister ParkOfficial park hours, size, history, facilities, trail-network context, and visitor information.
- City of San Antonio · McAllister Park trail mapOfficial Blue Loop alignment, trail network, facilities, entrances, and mapped access information.
- AllTrails · McAllister Park Blue Loop TrailCommunity-route distance, difficulty, and elevation-gain estimate.
Distance and difficulty methodThe City map identifies the Blue Loop and remains the authority for the park layout. The 6.2-mile distance, moderate rating, and approximately 229 feet of gain are community-route figures from AllTrails and are marked with an asterisk above. GPS totals and trail conditions can vary.