This weekend's Ironman 70.3 wasn't without sadness; local competitor Sam Land died before he could participate and another person died after trouble with the swimming portion—but the triathlon did go on. 

More than 3,000 athletes from around the world competed Sunday, and countless more came to witness the feat—a 1.2-mile swim, a 56-mile bike ride and a 13.1-mile run. 

Both the men's and women's winners praised Chattanooga, the volunteers and the spectators.

Here's a glimpse into the day. 

Sam Land's friends and fellow athletes honored him at Sunday's event. (Photo: Chloé Morrison)
Sebastian Kienle of Germany won the 2016 Ironman 70.3. (Photo: Chloé Morrison)
Kienle said Chattanooga was a great place to race and that he hopes to be back here for the 70.3 World Championship in 2017. (Photo: Chloé Morrison)
The event features a 1.2-mile swim, 56-mile bike ride and 13.1-mile run. Kienle finished with a time of 3:46:48. (Photo: Chloé Morrison)
Heather Jackson won the women's event. (Photo: Chloé Morrison)
Jackson finished with a time of 4:11:56. (Photo: Chloé Morrison)
She had recently come off a difficult race, so this victory was even sweeter. (Photo: Chloé Morrison)
Sam Appleton finished second in the men's event. (Photo: Chloé Morrison)
Sebastian Kienle and Sam Appleton shook hands after their first- and second-place finishes, respectively. (Photo: Chloé Morrison)
Canadian athlete Magali Tisseyre ran hard at the end to finish second in the women's event. (Photo: Chloé Morrison)
Tisseyre rested for a moment at the finish line. (Photo: Chloé Morrison)
Jackson came over to congratulate Tisseyre after her finish. (Photo: Chloé Morrison)
Although swimming is the first part of the triathlon, it can be the most difficult. (Photo: Chloé Morrison)
Volunteers were on land and in the water as the swimmers made their way to the next part of the race. (Photo: Chloé Morrison)
After the swim, athletes shed their wet suits and went to the transition area, where their bikes and clothes were waiting. (Photo: Chloé Morrison)
An athlete prepares for the bike portion of Ironman 70.3. (Photo: Chloé Morrison)
Another competitor transitions from the swim to the bike ride. (Photo: Chloé Morrison)
Many athletes checked their watches between each transition. (Photo: Chloé Morrison)
Another perspective of the transition between swimming and biking at Ironman 70.3. (Photo: Chloé Morrison)
Volunteers put sunscreen on the athletes before they got on their bikes. (Photo: Chloé Morrison)
And the 56-mile bike ride begins. (Photo: Chloé Morrison)
After the bike ride, the athletes put their bikes back where they got them and started the final leg—the 13.1-mile run. (Photo: Chloé Morrison)
Spectators had a clear view of runners in some areas. (Photo: Chloé Morrison)
Many spectators had signs to support their athlete. (Photo: Chloé Morrison)
Beer might be a good motivator for some participants. (Photo: Chloé Morrison)
Although the professional athletes finished hours before some of the other participants, many competitors crossed the finish line with smiles. (Photo: Chloé Morrison)
More smiles! (Photo: Chloé Morrison)
And another smile. The relief after all that work must be amazing. (Photo: Chloé Morrison)
And it might make you want to flex your Ironman muscles. (Photos: Chloé Morrison)
This duo crossed together, hands joined in victory. (Photo: Chloé Morrison)
Volunteers massaged the athletes after they finished. (Photo: Chloé Morrison)
And this pup might be having sympathy exhaustion, or maybe he just knows how to relax on a nice day. (Photo: Chloé Morrison)