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2021 Ironman 70.3 Boulder

August 6, 2021 · Boulder, CO, United States

Data: Ironman™ · Updated 7/3/2025 · Quality: unknownHow data works

Race editions

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20252024202320222021201920182017201620152014
Distance
Half-Iron (70.3 miles)
Middle Distance
Field size
56
33 men · 23 women
Men SOF
Unavailable
Women SOF
Unavailable

Race story in the data

Men: Sam Long won in 3:37:34 with a +3:25 margin. Sam Long had the fastest run (1:12:00).

Women: Emma Pallant-Browne won in 3:59:53 with a +2:26 margin. Tamara Jewett had the fastest run (1:16:50).

Shareable race cards

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Race summary

2021 Ironman 70.3 Boulder 2021 - Men

ProTriStats

Winner: Sam Long in 3:37:34

Margin: +3:25

Fastest bike: Sam Long - 1:54:49

Fastest run: Sam Long - 1:12:00

Top points: Sam Long - 97.69 pts

Field: 29/33 finishers

Race summary

2021 Ironman 70.3 Boulder 2021 - Women

ProTriStats

Winner: Emma Pallant-Browne in 3:59:53

Margin: +2:26

Fastest bike: Emma Pallant-Browne - 2:11:58

Fastest run: Tamara Jewett - 1:16:50

Top points: Emma Pallant-Browne - 106.19 pts

Field: 22/23 finishers

Men race summary

29 finishers from 33 starters

Winner
Sam Long
3:37:34
Winning margin
+3:25
Gap to second place
Fastest swim
Sam Appleton · 24:39
Fastest bike
Sam Long · 1:54:49
Fastest run
Sam Long · 1:12:00
Top points
Sam Long
97.69 pts

Women race summary

22 finishers from 23 starters

Winner
Emma Pallant-Browne
3:59:53
Winning margin
+2:26
Gap to second place
Fastest swim
Taylor Knibb · 26:04
Fastest bike
Emma Pallant-Browne · 2:11:58
Fastest run
Tamara Jewett · 1:16:50
Top points
Emma Pallant-Browne
106.19 pts

Men split podiums

Fastest stored segment times. These are segment rankings, not cumulative race-position order.

Swim

  1. 1
    Sam Appleton
    Finish 2
    24:39
  2. 2
    Martin Ulloa
    Finish 8
    25:29
  3. 3
    Scott Haeberle
    Finish 24
    25:31

T1

Split unavailable.

Bike

  1. 1
    Sam Long
    Finish 1
    1:54:49
  2. 2
    Sam Appleton
    Finish 2
    1:58:31
  3. 3
    Collin Chartier
    Finish 3
    2:01:13

T2

Split unavailable.

Run

  1. 1
    Sam Long
    Finish 1
    1:12:00
  2. 2
    Bradley Weiss
    Finish 4
    1:13:47
  3. 3
    Collin Chartier
    Finish 3
    1:13:59
Off-bike and off-run position order needs cumulative split-position data. ProTriStats currently stores segment times and segment ranks, so this page reports the fastest bike split rather than who entered T2 first.

Women split podiums

Fastest stored segment times. These are segment rankings, not cumulative race-position order.

Swim

  1. 1
    Taylor Knibb
    Finish 2
    26:04
  2. 2
    Pamella Oliveira
    Finish 13
    26:05
  3. 3
    Sonja Catano
    Finish 10
    26:57

T1

Split unavailable.

Bike

  1. 1
    Emma Pallant-Browne
    Finish 1
    2:11:58
  2. 2
    Taylor Knibb
    Finish 2
    2:12:24
  3. 3
    Jeanni Metzler
    Finish 3
    2:12:36

T2

Split unavailable.

Run

  1. 1
    Tamara Jewett
    Finish 5
    1:16:50
  2. 2
    Emma Pallant-Browne
    Finish 1
    1:17:39
  3. 3
    Jeanni Metzler
    Finish 3
    1:20:28
Off-bike and off-run position order needs cumulative split-position data. ProTriStats currently stores segment times and segment ranks, so this page reports the fastest bike split rather than who entered T2 first.

PodiumMen

Winner time: 3:37:34
🥇#1
US
Sam Long
3:37:34
97.69 pts
🥈#2
AU
Sam Appleton
3:40:59
87.19 pts
🥉#3
US
Collin Chartier
3:43:04
80.78 pts

PodiumWomen

Winner time: 3:59:53
🥇#1
GB
Emma Pallant-Browne
3:59:53
106.19 pts
🥈#2
US
Taylor Knibb
4:02:19
99.50 pts
🥉#3
ZA
Jeanni Metzler
4:02:31
98.94 pts

Men · Split Rank Flow

Top finishers by stored split rank. Lower lines are worse ranks; this is not cumulative race position at each checkpoint.

Top 8
#1#5#10SwimBikeRunFinish#1#2#3#4#5#6#7#8
Sam Long1Sam Appleton2Collin Chartier3Bradley Weiss4Justin Metzler5Joe Gambles6Robbie Deckard7Martin Ulloa8

Women · Split Rank Flow

Top finishers by stored split rank. Lower lines are worse ranks; this is not cumulative race position at each checkpoint.

Top 8
#1#5#10SwimBikeRunFinish#1#2#3#4#5#6#7#8
Emma Pallant-Browne1Taylor Knibb2Jeanni Metzler3Skye Moench4Tamara Jewett5Chelsea Sodaro6Lesley Smith7Sarah Piampiano8

Men · Finish Time Distribution

Women · Finish Time Distribution

Male Pro Results

33 participants

3:37:34
Swim
28:34
Bike
1:54:49
Run
1:12:00
3:40:59
Swim
24:39
Bike
1:58:31
Run
1:15:14
3:43:04
Swim
25:32
Bike
2:01:13
Run
1:13:59
3:44:13
Swim
25:54
Bike
2:02:04
Run
1:13:47
3:45:39
Swim
25:34
Bike
2:02:29
Run
1:15:20
3:46:47
Swim
25:45
Bike
2:02:25
Run
1:16:05
3:47:03
Swim
27:21
Bike
2:02:57
Run
1:14:15
3:47:58
Swim
25:29
Bike
2:02:24
Run
1:17:30
3:48:58
Swim
25:37
Bike
2:04:29
Run
1:16:10
3:50:18
Swim
25:37
Bike
2:01:56
Run
1:19:51
PosAthleteTimeGapSwimT1BikeT2RunPoints
1Sam LongUS3:37:34Winner28:34—1:54:49—1:12:0097.69
2Sam AppletonAU3:40:59—24:39—1:58:31—1:15:1487.19
3Collin ChartierUS3:43:04—25:32—2:01:13—1:13:5980.78
4Bradley WeissZA3:44:13—25:54—2:02:04—1:13:4777.25
5Justin MetzlerUS3:45:39—25:34—2:02:29—1:15:2072.84
6Joe GamblesAU3:46:47—25:45—2:02:25—1:16:0569.35
7Robbie DeckardUS3:47:03—27:21—2:02:57—1:14:1568.53
8Martin UlloaCL3:47:58—25:29—2:02:24—1:17:3065.72
9Marty AndrieUS3:48:58—25:37—2:04:29—1:16:1062.64
10Tyler ButterfieldBM3:50:18—25:37—2:01:56—1:19:5158.54
11Tomas RodriguezMX3:52:01—25:40—2:08:27—1:14:5653.26
12Tripp HippleUS3:56:22—28:32—2:01:43—1:23:3239.89
13Stephen KilshawCA3:57:12—28:52—2:05:51—1:19:4237.33
14Ernest MantellUS3:57:40—28:07—2:07:35—1:18:5335.89
15Benjamin DealUS3:58:12—27:28—2:08:03—1:19:5334.25
16Danilo PimentelBR3:59:01—25:43—2:09:33—1:21:1231.74
17Elliot BachUS3:59:23—25:39—2:05:36—1:25:5230.61
18Garrick LoewenCA3:59:54—25:58—2:07:47—1:23:3129.02
19Dylan GillespieUS4:00:42—25:48—2:08:12—1:24:1426.56
20Mathieu GauthierCA4:01:38—32:03—2:09:35—1:17:4023.69
21Neal RossUS4:02:19—27:25—2:09:17—1:22:4321.59
22Steven ZawaskiUS4:02:55—27:22—2:07:56—1:25:0519.75
23Erik PetersonUS4:03:06—28:37—2:09:11—1:21:3219.18
24Scott HaeberleUS4:06:07—25:31—2:06:57—1:30:479.91
25Weston ChristensenUS4:14:02—26:23—2:22:09—1:22:59—
26Steven ParkerUS4:18:38—28:40—2:25:29—1:19:26—
27Loren NelsonCA4:27:35—26:02—2:22:37—1:35:18—
28Timothy WinslowUS4:30:30—26:10—2:11:30—1:49:08—
29Joseph SullensUS4:43:42—34:36—2:22:08—1:42:29—
DNFAdriano EngelhardtCHDNF—27:24—2:15:12———
DNFKennett PetersonUSDNF—28:37—————
DNFKevin CollingtonUSDNF—25:49—————
DNFPaul StevensonUSDNF—27:23—2:15:37———

Female Pro Results

23 participants

3:59:53
Swim
27:47
Bike
2:11:58
Run
1:17:39
4:02:19
Swim
26:04
Bike
2:12:24
Run
1:21:39
4:02:31
Swim
27:01
Bike
2:12:36
Run
1:20:28
4:09:42
Swim
28:53
Bike
2:12:46
Run
1:25:28
4:10:40
Swim
29:36
Bike
2:21:06
Run
1:16:50
4:10:59
Swim
28:56
Bike
2:14:29
Run
1:25:03
4:15:47
Swim
29:39
Bike
2:20:52
Run
1:21:55
4:18:19
Swim
33:05
Bike
2:15:12
Run
1:27:20
4:19:48
Swim
28:43
Bike
2:14:35
Run
1:33:28
4:19:58
Swim
26:57
Bike
2:20:06
Run
1:30:29
PosAthleteTimeGapSwimT1BikeT2RunPoints
1Emma Pallant-BrowneGB3:59:53Winner27:47—2:11:58—1:17:39106.19
2Taylor KnibbUS4:02:19—26:04—2:12:24—1:21:3999.50
3Jeanni MetzlerZA4:02:31—27:01—2:12:36—1:20:2898.94
4Skye MoenchUS4:09:42—28:53—2:12:46—1:25:2879.17
5Tamara JewettCA4:10:40—29:36—2:21:06—1:16:5076.51
6Chelsea SodaroUS4:10:59—28:56—2:14:29—1:25:0375.63
7Lesley SmithUS4:15:47—29:39—2:20:52—1:21:5562.42
8Sarah PiampianoUS4:18:19—33:05—2:15:12—1:27:2055.44
9Jocelyn McCauleyUS4:19:48—28:43—2:14:35—1:33:2851.36
10Sonja CatanoUS4:19:58—26:57—2:20:06—1:30:2950.90
11Alissa DoehlaUS4:20:30—29:41—2:19:24—1:28:1349.43
12Alycia HillUS4:21:54—30:58—2:24:49—1:23:2045.58
13Pamella OliveiraBR4:23:44—26:05—2:17:00—1:38:0540.53
14Amy CymermanUS4:23:49—29:33—2:26:04—1:25:3140.30
15Nicole FalcaroUS4:25:32—33:11—2:21:43—1:27:2435.57
16Meredith KesslerUS4:29:59—27:44—2:23:16—1:35:2023.32
17Carly JohannUS4:31:23—33:40—2:19:39—1:34:4719.47
18Kimberly GoodellUS4:37:52—33:43—2:30:04—1:31:191.62
19Marj RinaldoUS4:38:07—30:54—2:25:21—1:37:140.93
20Romina Palacio BalenaAR4:41:04—28:58—2:31:41—1:37:34—
21Lara GrudenUS4:50:16—31:26—2:33:46—1:42:21—
22Rebecca MarrouUS4:53:44—31:34—2:28:54—1:48:53—
DNFHayley BellesUSDNF—30:15—2:32:36———