Master athlete

Theresa Halliday

WomenCAAge GroupViewing AG

Note

Private research note

Pro results

AG results

Races

Best finish

#184

Race history

29 results

2026 IRONMAN 70.3 Western Massachusetts

Jun 8, 2026halfF50-54

#757

Place

Finish

5:33:39

Swim

Bike

3:12:56

Run

2:16:29

2025 IRONMAN 70.3 Musselman

Jul 14, 2025half

	Race							Finish
757	IRONMAN 70.3 Western Massachusetts 2026Age Group70.3	Jun 8, 2026	-	-	3:12:56 17.4 mph	0:04:13	2:16:29 10:25/mi	5:33:39
645	IRONMAN 70.3 Musselman 2025Age Group70.3	Jul 14, 2025	0:37:28 1:58/100m	0:03:45	3:00:59 18.6 mph	0:03:00	2:38:06 12:04/mi	6:23:18
DNS	IRONMAN 70.3 Maine 2024Age Group70.3	Jul 28, 2024	-	-	-	-	-	DNSDNS
425	IRONMAN 70.3 Florida 2023Age Group70.3	Dec 11, 2023	0:32:48 1:44/100m	0:05:45	2:45:53 20.2 mph	0:03:46	2:11:11 10:00/mi	5:39:23
915	VinFast IRONMAN® World Championship - Women's Race 2023Age Group140.6	Oct 14, 2023	1:04:00 1:41/100m	0:09:18	6:26:55 17.4 mph	0:10:26	4:30:01 10:18/mi	12:20:40
DNS	IRONMAN 70.3 World Championship - Women 2023Age Group70.3	Aug 28, 2023	-	-	-	-	-	DNSDNS
432	VinFast IRONMAN® Lake Placid 2023Age Group140.6	Jul 23, 2023	1:07:44 1:47/100m	0:07:13	6:35:04 17.0 mph	0:05:48	4:24:21 10:05/mi	12:20:10
357	IRONMAN 70.3 Western Massachusetts 2023Age Group70.3	Jun 13, 2023	0:29:35 1:33/100m	0:07:41	3:04:45 18.2 mph	0:05:51	1:53:41 8:40/mi	5:41:33
410	IRONMAN® 70.3® Indian Wells La Quinta 2022Age Group70.3	Dec 4, 2022	0:32:08 1:41/100m	-	2:47:18 20.1 mph	-	1:54:36 8:44/mi	5:24:57
254	IRONMAN 70.3 Arizona 2022Age Group70.3	Oct 16, 2022	-	-	2:50:24 19.7 mph	-	1:54:24 8:44/mi	4:47:23
943	IRONMAN Barcelona 2022Age Group140.6	Oct 3, 2022	1:10:03 1:51/100m	-	6:07:04 18.3 mph	-	5:06:43 11:42/mi	12:39:20
184	IRONMAN Maryland 2022Age Group140.6	Sep 18, 2022	1:06:54 1:46/100m	0:06:40	5:35:51 20.0 mph	0:05:52	4:07:44 9:27/mi	11:03:02
1,400	IRONMAN European Championship Frankfurt 2022Age Group140.6	Jun 29, 2022	1:05:07 1:43/100m	-	6:21:29 17.6 mph	-	4:31:39 10:22/mi	12:13:49
700	IRONMAN 70.3 Chattanooga 2022Age Group70.3	May 23, 2022	0:30:25 1:36/100m	-	2:53:52 19.3 mph	-	2:07:10 9:42/mi	5:40:01
742	IRONMAN Texas 2022Age Group140.6	Apr 24, 2022	1:06:15 1:45/100m	-	6:32:22 17.1 mph	-	5:41:24 13:01/mi	13:34:31
569	IRONMAN Chattanooga 2021Age Group140.6	Sep 27, 2021	0:49:57 1:19/100m	-	6:24:35 17.4 mph	-	5:09:14 11:48/mi	12:36:55
486	IRONMAN 70.3 Calgary 2021Age Group70.3	Aug 2, 2021	0:28:10 1:29/100m	-	3:34:57 15.6 mph	-	2:21:16 10:46/mi	6:29:57
835	IRONMAN 70.3 Florida 2021Age Group70.3	Apr 19, 2021	0:34:01 1:47/100m	-	3:24:32 16.4 mph	-	2:40:59 12:17/mi	6:51:28
608	IRONMAN Arizona 2019Age Group140.6	Nov 24, 2019	1:05:02 1:43/100m	-	6:00:55 18.6 mph	-	4:49:52 11:03/mi	12:10:51
350	IRONMAN 70.3 Arizona 2019Age Group70.3	Oct 20, 2019	0:31:53 1:41/100m	-	2:56:13 19.0 mph	-	2:06:45 9:40/mi	5:43:17
325	IRONMAN Chattanooga 2019Age Group140.6	Sep 30, 2019	0:55:09 1:27/100m	-	6:36:51 16.9 mph	-	5:09:12 11:48/mi	12:54:13
447	IRONMAN 70.3 Maine 2019Age Group70.3	Aug 26, 2019	0:35:47 1:53/100m	-	2:47:03 20.1 mph	-	1:54:37 8:45/mi	5:25:29
DNF	IRONMAN European Championship Frankfurt 2019Age Group140.6	Jul 1, 2019	1:06:07 1:44/100m	-	-	-	-	DNFDNF
468	IRONMAN 70.3 Florida 2019Age Group70.3	Apr 15, 2019	0:33:09 1:45/100m	-	2:57:25 18.9 mph	-	2:24:55 11:03/mi	6:03:15
682	IRONMAN Florida 2018Age Group140.6	Nov 5, 2018	1:07:15 1:46/100m	-	6:38:44 16.8 mph	-	5:19:44 12:12/mi	13:23:46
1,427	IRONMAN Chattanooga 2018Age Group140.6	Oct 1, 2018	-	-	6:40:41 16.7 mph	-	6:25:51 14:43/mi	13:13:56
1,547	IRONMAN North American Championship Texas 2018Age Group140.6	Apr 30, 2018	1:06:11 1:45/100m	-	6:02:16 18.5 mph	-	6:13:16 14:14/mi	13:37:54
823	IRONMAN Florida 2017Age Group140.6	Nov 6, 2017	1:07:07 1:46/100m	-	6:00:03 18.6 mph	-	5:18:11 12:08/mi	12:37:46
952	IRONMAN North American Championship Texas 2017Age Group140.6	Apr 23, 2017	1:08:26 1:48/100m	-	6:16:53 17.8 mph	-	4:58:29 11:23/mi	12:37:52

Race

Finish

757

IRONMAN 70.3 Western Massachusetts

2026Age Group70.3

Jun 8, 2026

3:12:56

17.4 mph

0:04:13

2:16:29

10:25/mi

5:33:39

645

IRONMAN 70.3 Musselman

2025Age Group70.3

Jul 14, 2025

0:37:28

1:58/100m

0:03:45

3:00:59

18.6 mph

0:03:00

2:38:06

12:04/mi

6:23:18

DNS

IRONMAN 70.3 Maine

2024Age Group70.3

Jul 28, 2024

DNSDNS

425

IRONMAN 70.3 Florida

2023Age Group70.3

Dec 11, 2023

0:32:48

1:44/100m

0:05:45

2:45:53

20.2 mph

0:03:46

2:11:11

10:00/mi

5:39:23

915

VinFast IRONMAN® World Championship - Women's Race

2023Age Group140.6

Oct 14, 2023

1:04:00

1:41/100m

0:09:18

6:26:55

17.4 mph

0:10:26

4:30:01

10:18/mi

12:20:40

DNS

IRONMAN 70.3 World Championship - Women

2023Age Group70.3

Aug 28, 2023

DNSDNS

432

VinFast IRONMAN® Lake Placid

2023Age Group140.6

Jul 23, 2023

1:07:44

1:47/100m

0:07:13

6:35:04

17.0 mph

0:05:48

4:24:21

10:05/mi

12:20:10

357

IRONMAN 70.3 Western Massachusetts

2023Age Group70.3

Jun 13, 2023

0:29:35

1:33/100m

0:07:41

3:04:45

18.2 mph

0:05:51

1:53:41

8:40/mi

5:41:33

410

IRONMAN® 70.3® Indian Wells La Quinta

2022Age Group70.3

Dec 4, 2022

0:32:08

1:41/100m

2:47:18

20.1 mph

1:54:36

8:44/mi

5:24:57

254

IRONMAN 70.3 Arizona

2022Age Group70.3

Oct 16, 2022

2:50:24

19.7 mph

1:54:24

8:44/mi

4:47:23

943

IRONMAN Barcelona

2022Age Group140.6

Oct 3, 2022

1:10:03

1:51/100m

6:07:04

18.3 mph

5:06:43

11:42/mi

12:39:20

184

IRONMAN Maryland

2022Age Group140.6

Sep 18, 2022

1:06:54

1:46/100m

0:06:40

5:35:51

20.0 mph

0:05:52

4:07:44

9:27/mi

11:03:02

1,400

IRONMAN European Championship Frankfurt

2022Age Group140.6

Jun 29, 2022

1:05:07

1:43/100m

6:21:29

17.6 mph

4:31:39

10:22/mi

12:13:49

700

IRONMAN 70.3 Chattanooga

2022Age Group70.3

May 23, 2022

0:30:25

1:36/100m

2:53:52

19.3 mph

2:07:10

9:42/mi

5:40:01

742

IRONMAN Texas

2022Age Group140.6

Apr 24, 2022

1:06:15

1:45/100m

6:32:22

17.1 mph

5:41:24

13:01/mi

13:34:31

569

IRONMAN Chattanooga

2021Age Group140.6

Sep 27, 2021

0:49:57

1:19/100m

6:24:35

17.4 mph

5:09:14

11:48/mi

12:36:55

486

IRONMAN 70.3 Calgary

2021Age Group70.3

Aug 2, 2021

0:28:10

1:29/100m

3:34:57

15.6 mph

2:21:16

10:46/mi

6:29:57

835

IRONMAN 70.3 Florida

2021Age Group70.3

Apr 19, 2021

0:34:01

1:47/100m

3:24:32

16.4 mph

2:40:59

12:17/mi

6:51:28

608

IRONMAN Arizona

2019Age Group140.6

Nov 24, 2019

1:05:02

1:43/100m

6:00:55

18.6 mph

4:49:52

11:03/mi

12:10:51

350

IRONMAN 70.3 Arizona

2019Age Group70.3

Oct 20, 2019

0:31:53

1:41/100m

2:56:13

19.0 mph

2:06:45

9:40/mi

5:43:17

325

IRONMAN Chattanooga

2019Age Group140.6

Sep 30, 2019

0:55:09

1:27/100m

6:36:51

16.9 mph

5:09:12

11:48/mi

12:54:13

447

IRONMAN 70.3 Maine

2019Age Group70.3

Aug 26, 2019

0:35:47

1:53/100m

2:47:03

20.1 mph

1:54:37

8:45/mi

5:25:29

DNF

IRONMAN European Championship Frankfurt

2019Age Group140.6

Jul 1, 2019

1:06:07

1:44/100m

DNFDNF

468

IRONMAN 70.3 Florida

2019Age Group70.3

Apr 15, 2019

0:33:09

1:45/100m

2:57:25

18.9 mph

2:24:55

11:03/mi

6:03:15

682

IRONMAN Florida

2018Age Group140.6

Nov 5, 2018

1:07:15

1:46/100m

6:38:44

16.8 mph

5:19:44

12:12/mi

13:23:46

1,427

IRONMAN Chattanooga

2018Age Group140.6

Oct 1, 2018

6:40:41

16.7 mph

6:25:51

14:43/mi

13:13:56

1,547

IRONMAN North American Championship Texas

2018Age Group140.6

Apr 30, 2018

1:06:11

1:45/100m

6:02:16

18.5 mph

6:13:16

14:14/mi

13:37:54

823

IRONMAN Florida

2017Age Group140.6

Nov 6, 2017

1:07:07

1:46/100m

6:00:03

18.6 mph

5:18:11

12:08/mi

12:37:46

952

IRONMAN North American Championship Texas

2017Age Group140.6

Apr 23, 2017

1:08:26

1:48/100m

6:16:53

17.8 mph

4:58:29

11:23/mi

12:37:52