Course Description

Spring Lake

GPS: 29.893485,-97.930922

Start

Spring Lake Dam

Portage island left, right, or middle with the middle being the most popular. Hazardous footing in some spots. Can only be seen on race day (private property).

Portage

Rio Vista Dam

Can be portaged left or right or can be run through small spillway in center of dam. It and the salt water barrier are the only dams that can be run. ALL OTHERS MUST BE PORTAGED.

Portage

Thompson's Island Dam

Approximately 1/4 mile past I-35 bridge, Thompson's Island Dam will be on river right with mill race continuing down left channel to Thompson's Island Bridge. You can portage the dam and get into old river stream or take left channel to Thompson's Island road bridge.

Portage

Thompson's Island Road Bridge

Portage right at end of mill race. Carry boat beside road to re-enter river above road bridge with yellow handrail. You cannot cross the road and must go under this bridge in the race.

Portage

Blanco River Confluence

Obvious right turn at confluence.

Cummings Dam

Portage right or left

Portage

Westerfield Crossing

Low clearance at higher water levels. River current increases with small rapids down to Cottonseed Rapids.

Low Clearance

Cottonseed Rapids

One of the best known on the San Marcos River.  It can be run at most water levels.  Can be scouted by stopping on river right when you see the old concrete dam.

Caution!!!

Scull's Crossing

Good clearance at all but extremely high water.

Martindale Dam

Must be portaged on the right.

Portage

Martindale Low Water Crossing

Just past Martindale Dam, approach with caution. Fast current Portage Right leading up to and under bridge with rocks below bridge at low water. Portage right if necessary.

Low Clearance

Portage Right

FM 1979

This next section of river has some fast current with sweepers and small rapids. Still water the last two miles above Staples Dam.

Staples Dam FM 1977

DEADLINE-YOU MUST REACH THIS CHECKPOINT BY 3:00PM SATURDAY
Staples dam fifty yards past bridge. Portage left over lip of dam or right down stairs. This is private property, please exercise courtesy. Fast current starts again with sweepers and two small rock dams that can be run at normal water levels but may need to be portaged at lower water, small log jams are possible from here to Luling 90 but are usually single, fallen trees.

GPS: 29.782312,-97.83131

Checkpoint #1

Fentress Hwy. 20 Bridge

The river continues to be fast at average water levels with tight sweeping corners and stumps.

Prairie Lea Bridge #1

Good clearance at all but extremely high water. A sweeping left hand turn upstream of the bridge can make the approach difficult to see. At high water it should be approached with caution. Portage right if necessary.

Prairie Lea Private Bridge

A private bridge with a small rapid just upstream.

Low Clearance

Prairie Lea #2

The river down to Stairtown is especially tight and winding with logs and sweeping corners.

Stairtown Bridge

The river from here to Luling 90 continues to be tight and winding with logs and possible small jams.

Luling 90

DEADLINE-YOU MUST REACH THIS CHECKPOINT BY 8:00PM SATURDAY
The river begins to slow and the possibility of larger log jams increases. Little or no current for the last three miles above Luling Dam.

GPS: 29.667722,-97.69978

Checkpoint #2

Luling (Zedler) Dam and Hwy 80

The dam, about 400 yards past Luling water intake on left. Portage right. The portage is obvious in daylight. If dark, approach with caution, pulling over well above dam.

Portage

IH-10

The river below Luling Dam is similar to below Luling 90 with some current below the dam for a couple of miles then slowing.

Difficult Access

Broken Dam Rapid (Son of Ottine)

An old broken rock dam that is runable at all but extremely low water. Run just right of center or far left.

Caution

Palmetto Bridge & Park

DEADLINE-YOU MUST REACH THISCHECKPOINT BY 8:00AM SUNDAY
A portage at most water levels, strong current just above the bridge; bridge may also have logs and debris on it. Approach with caution especially at night. River continues to have some current but fewer sweeping corners with more logs and some of the largest log jams possible in the next section of the river.

GPS: 29.589948,-97.585067

Portage

Checkpoint #3

Sladen Cemetary Bridge

The river gets slower as you get closer to the confluence of the San Marcos and Guadalupe rivers. This is usually the last section for log jams.

Gonzales 90A

The river gets slow and wide from here to Gonzales Dam.

Old Iron Bridge

No Access

Guadalupe River Confluence

The Guadalupe River flows in from the right, obvious left turn. Boils and eddies at high water.

Gonzales Dam

There is a cable strung 15-20 feet above the water 500 yards above the dam with a warning sign on it. Generating building on left side of the dam is usually well lighted at night. Portage take out approximately 30 yards above the dam on river right. Approach with caution, keeping to right side on approach. Marked by tree with sign and blinking light at night during race. At normal or lower water you can put back in just below the dam past the rock riprap. There are large rocks and an eddy pushing you back towards the dam. At high water, this short portage is very dangerous and the longer portage is best. Use the same take out but instead of going down to the short put in, go right through the opening in trees for about 50-75 yards. Then angle left for about 200 yards to put in. Portage on Left is Texas Paddling Trail dock.  Dock is approximately 30 yards above the dam. Carry boat up to road and around the building through the gate and down to the river.

Portage Right or Left

Gonzales 183 (Gravel Bar)

DEADLINE-YOU MUST REACH THIS CHECKPOINT BY 4:00PM SUNDAY
The next road crossing is 38 miles and this is the longest section on the race course. Make sure to have plenty of water. At low water, there are gravel bars, sweeping turns and a few small rapids. At high water, boils and eddies.

GPS: 29.484275,-97.448221

Checkpoint #4

Hochheim Hwy 183

DEADLINE-YOU MUST REACH THISCHECKPOINT BY 7:00AM MONDAY
Similar river conditions as the previous section.

GPS: 29.314262,-97.30321

Checkpoint #5

Cheapside Bridge (766)

GPS: 29.147265,-97.317855

FM 3402 / Heaton St. (Old Cuero-San Antonio Rd)

DEADLINE-YOU MUST REACH THISCHECKPOINT BY 3:00PM MONDAY

Cuero Hwy 87

Cuero 236

DEADLINE-YOU MUST REACH THISCHECKPOINT BY 7:00PM MONDAY
This section is a lot like the previous one with a few sweepers and small rapids at low water and boils at high water.

GPS: 29.051293,-97.265117

Checkpoint #7

Thomaston Bridge

This section has some rapids with standing waves at normal water level, but are usually washed out at high water.

Nursery (447)

Note: For the Texas River Marathon,  there is a deadline of 1:00 p.m.

Victoria City Park Boat Ramp

DEADLINE-YOU MUST REACH THIS CHECKPOINT BY 9:00AM TUESDAY
This and the next section are the last to have sweepers at low water levels.

GPS: 28.824706,-97.01542

Checkpoint #8

Hwy 59 Bypass (Old Victoria Loop 175 Bridge)

As the river current slows there is a slight possibility of log jams in this section, but usually just fallen trees blocking a portion of the river.

Coletto Creek Confluence

Flowing in from the right it is a good landmark for time. It is the halfway point to Swinging Bridge.

Swinging' Bridge (off Canal Road)

DEADLINE-YOU MUST REACH THIS CHECKPOINT BY 8:00PM TUESDAY
Swingin' Bridge is owned by Invista who controls access to the river. It may be open for the race, but for training runs there is no access. Log jams are possible in this next section, especially after the railroad bridge.

GPS: 28.651783,-96.962229

Checkpoint #9

Railroad Crossing

This next section has the possibility of some of the largest log jams. Some years as many as several large jams. At high water, there are several cuts flowing off the river to the right.

Salt Water Barrier

DEADLINE-YOU MUST REACH THISCHECKPOINT BY 6:00AM WEDNESDAY
A dam that is raised at extremely low water to keep salt water out of Port Lavaca water intake just above the dam. It can have logs piled up in front of it that can be portaged right but is usually open and passable with boils around the pilings.

GPS: 28.505861,-96.885209

Checkpoint #10

Tivoli Hwy 35 Bridge

This section can have small log jams but is usually kept open by fishing boats.

Traylor Cut

It's a cut to the left that goes to the upper end of the San Antonio Bay. Usually not taken because of the increased time in the bay. Take the right channel and stay in the river.

Wooden Bridge

The last public access point.

Guadalupe River and San Antonio Bay Confluence

There are several routes to cross the bay. One course is to enter the bay turning right after 50-100 yards and follow the right shoreline to Foster Point, then angle left to the end of the spoil bank and around the island turning left to the Seadrift flagpole and pavilion on the seawall. Another course is to come out of the river and across straight to the opposite shore then turn right and follow the shoreline to end of the spoil bank. There are three cuts through the spoil island to the barge canal. Do not enter the barge canal but continue to the end of the spoil bank, then left to Seadrift. At the end of the spoil bank you will have to cross the barge canal. Make sure there are no barges coming down the canal. Let any boat pass before attempting to cross. The depth of the canal can make large waves and be dangerous to cross. At night a row of lights on the seawall and car lights on the road above the seawall are landmarks to look for.

Bill Sander Memorial Park – Seadrift 

1522 Swan Point Rd, Seadrift, TX 77983

DEADLINE 1:00 PM WEDNESDAY

FINISH