Build your Chattanooga 70.3 plan
Your coach opens with the Chattanooga 70.3 set for May 16, 2027, asks about your week and your fitness, then writes every session of your 70.3 triathlon plan. Free, and you can start as a guest. About 27 weeks to go.
Start your Chattanooga 70.3 plan- Formats
- 70.3
- Terrain
- Rolling
- Taper starts
- May 4, 2027
Chattanooga 70.3 distances
- 70.3 1.4 mi swim, 56 mi bike, 13.1 mi run
Course
The Chattanooga 70.3 course
The swim is a 1.4 mile point-to-point downriver swim in the Tennessee River with a rolling start, exiting at Ross's Landing Park. The 56-mile bike heads 11 miles south of town before a 34-mile loop in north Georgia that parallels Lookout Mountain and passes through Chickamauga.
Read the full course notes
The 13.1-mile run is two loops through downtown Chattanooga, the Tennessee Riverwalk, Veterans Bridge and North Shore, finishing at Ross's Landing. The 2026 run detoured off the Walnut Street Bridge because of construction.
- Terrain
- Rolling
- Formats
- 70.3
- Race-day conditions
- The official site says the average water temperature is typically in the low 70s F (listed average 72 °F / 22 °C). Wetsuits are permitted up to and including 76.1 °F per the event FAQ.
What to train for
Train at sustained tempo effort on the bike and practice running off the bike in weekly bricks.
Rehearse fueling and pacing at goal intensity so the half marathon is run, not survived.
The rolling bike course rewards steady power on repeated short climbs rather than surges.
Sample week
A sample Chattanooga 70.3 training week
A week from the middle of the build, about six weeks out. Your plan sets the real distances and paces from your own fitness and adjusts them every week as you train.
- Monday
- Swim, 1 h: drills and technique
- Tuesday Key session
- Bike, 1 h 15 min with threshold intervals
- Wednesday
- Swim, 1 h: steady intervals at race effort
- Easy run, 50 min
- Thursday Key session
- Run, 50 min with tempo segments
- Friday
- Rest, or 20 minutes of mobility
- Saturday Key session
- Long ride, 3 h, then a 30 min run off the bike
- Sunday
- Long run, 1 h 30 min easy
Your build to race day
Taper
Tapering for the Chattanooga 70.3
Start the taper ten to fourteen days before race day. Trim the volume in all three sports, keep short race-pace efforts in each, and do one last short brick so running off the bike still feels familiar. The course rolls, so keep one short session on undulating ground in the first taper week. With the race on May 16, 2027, your taper starts around May 4, 2027.
Also in Claude
Ask Claude for this plan
Add Athlete Space to Claude once, then paste this prompt and put in your own numbers.
Build me a 70.3 triathlon season for the IRONMAN 70.3 Chattanooga on May 16, 2027. I train about [hours] hours a week, [days] days a week.
Chattanooga 70.3 training questions
How long should I train for the Chattanooga 70.3?
Most athletes give a 70.3 triathlon sixteen to twenty weeks of focused training on top of an existing base. The coach counts back from your actual race date, so if you have less time than that it builds the best plan the remaining weeks allow rather than pretending you have longer.
What is the Chattanooga 70.3 course like?
Rolling. The swim is a 1.4 mile point-to-point downriver swim in the Tennessee River with a rolling start, exiting at Ross's Landing Park.
How cold is the water at the Chattanooga 70.3?
The official site says the average water temperature is typically in the low 70s F (listed average 72 °F / 22 °C). Wetsuits are permitted up to and including 76.1 °F per the event FAQ.
When should I start tapering for the Chattanooga 70.3?
Start the taper ten to fourteen days before race day. Trim the volume in all three sports, keep short race-pace efforts in each, and do one last short brick so running off the bike still feels familiar. The course rolls, so keep one short session on undulating ground in the first taper week. With the race on May 16, 2027, your taper starts around May 4, 2027.
Do I need an account to get a Chattanooga 70.3 training plan?
Start as a guest and save a free account later. Your coach writes your 70.3 triathlon plan and adapts it every week as you log your training. No card.