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BOSTON MARATHON 2023

Heather Vandenbroek

Bib: 21831•F

UT

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 42%
Masters (Masters Women)
#0 / 6539
Top 29%
Division (F45-49)
#0 / 1817
Top 33%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:01
Rank: #16688
Start → 5K
26:01 | 8:22/mi
10K· 6.21 mi
51:21
Rank: #16268 (+420)
5K → 10K
25:20 | 8:09/mi
15K· 9.32 mi
1:17:14
Rank: #16424 (-156)
10K → 15K
25:53 | 8:20/mi
20K· 12.43 mi
1:43:23
Rank: #16419 (+5)
15K → 20K
26:09 | 8:25/mi
Half· 13.11 mi
1:48:59
Rank: #16386 (+33)
20K → Half
5:36 | 8:12/mi
25K· 15.53 mi
2:09:28
Rank: #16281 (+105)
Half → 25K
20:29 | 8:27/mi
30K· 18.64 mi
2:36:02
Rank: #15939 (+342)
25K → 30K
26:34 | 8:33/mi
20M
2:47:42
Rank: #15782 (+157)
30K → 20M
11:40 | 8:35/mi
21M
2:56:34
Rank: #15579 (+203)
20M → 21M
8:52 | 8:52/mi
35K· 21.75 mi
3:02:44
Rank: #15507 (+72)
21M → 35K
6:10 | 8:15/mi
23M
3:13:19
Rank: #15326 (+181)
35K → 23M
10:35 | 8:27/mi
24M
3:21:22
Rank: #15138 (+188)
23M → 24M
8:03 | 8:03/mi
40K· 24.85 mi
3:28:26
Rank: #15015 (+123)
24M → 40K
7:04 | 8:16/mi
25.2M
3:31:27
Rank: #14944 (+71)
40K → 25.2M
3:01 | 8:45/mi
Finish· 26.22 mi
3:39:14
Rank: #14732 (+212)
25.2M → Finish
7:47 | 7:38/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:48:59
Pace8:19 /mi
2nd Half
Distance13.11 mi
Time1:50:15
Pace8:25 /mi
📊Positive Split: 1.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:43:1626:018:2226:01
8:22
-
10K
6.21 mi12:08:3651:218:1625:20
8:09
-0:13
15K
9.32 mi12:34:291:17:148:1725:53
8:20
+0:11
20K
12.43 mi13:00:381:43:238:1926:09
8:25
+0:05
Half
13.11 mi13:06:141:48:598:195:36
8:12
-0:13
25K
15.53 mi13:26:432:09:288:2020:29
8:27
+0:15
30K
18.64 mi13:53:172:36:028:2226:34
8:33
+0:06
20M
20.00 mi14:04:572:47:428:2311:40
8:35
+0:02
21M
21.00 mi14:13:492:56:348:248:52
8:52
+0:17
35K
21.75 mi14:19:593:02:448:246:10
8:15
-0:37
23M
23.00 mi14:30:343:13:198:2410:35
8:27
+0:12
24M
24.00 mi14:38:373:21:228:238:03
8:03
-0:24
40K
24.85 mi14:45:413:28:268:237:04
8:16
+0:13
25.2M
25.20 mi14:48:423:31:278:233:01
8:45
+0:29
Finish
26.22 mi14:56:293:39:148:227:47
7:38
-1:07

Checkpoints & Pacing

📈Pace Line

Pace Progression

Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.

Fastest Pace

7:38 /mi

Average Pace

8:22 /mi

Slowest Pace

8:52 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:51:54

51% of race

Time at Steady Pace

1:47:20

49% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:22 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

🎨Heatmap

Pace Heatmap

Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Click or hover over segments to see details

✨Sparklines

Checkpoint Splits with Pace Trends

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:43:1626:018:2226:01
8:22
#16688
10K
6.21 mi12:08:3651:218:1625:20
8:09
#16268
15K
9.32 mi12:34:291:17:148:1725:53
8:20
#16424
20K
12.43 mi13:00:381:43:238:1926:09
8:25
#16419
Half
13.11 mi13:06:141:48:598:195:36
8:12
#16386
25K
15.53 mi13:26:432:09:288:2020:29
8:27
#16281
30K
18.64 mi13:53:172:36:028:2226:34
8:33
#15939
20M
20.00 mi14:04:572:47:428:2311:40
8:35
#15782
21M
21.00 mi14:13:492:56:348:248:52
8:52
#15579
35K
21.75 mi14:19:593:02:448:246:10
8:15
#15507
23M
23.00 mi14:30:343:13:198:2410:35
8:27
#15326
24M
24.00 mi14:38:373:21:228:238:03
8:03
#15138
40K
24.85 mi14:45:413:28:268:237:04
8:16
#15015
25.2M
25.20 mi14:48:423:31:278:233:01
8:45
#14944
Finish
26.22 mi14:56:293:39:148:227:47
7:38
#14732
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi166885720572016734(Top 63%)5746(Top 50%)5746(Top 316%)
10K6.21 mi3.10 mi16268+4205438+2825438+28215944(Top 60%)5241(Top 46%)5241(Top 288%)
15K9.32 mi3.11 mi16424-1565539-1015539-10116734(Top 63%)5746(Top 50%)5746(Top 316%)
20K12.43 mi3.11 mi16419+55560-215560-2116347(Top 61%)5552(Top 49%)5552(Top 306%)
Half13.11 mi0.68 mi16386+335541+195541+1915881(Top 60%)5213(Top 46%)5213(Top 287%)
25K15.53 mi2.42 mi16281+1055502+395502+3915899(Top 60%)5374(Top 47%)5374(Top 296%)
30K18.64 mi3.11 mi15939+3425334+1685334+16814626(Top 55%)4707(Top 41%)4707(Top 259%)
20M20.00 mi1.36 mi15782+1575261+735261+7314195(Top 53%)4537(Top 40%)4537(Top 250%)
21M21.00 mi1.00 mi15579+2035164+975164+9712701(Top 48%)3797(Top 33%)3797(Top 209%)
35K21.75 mi0.75 mi15507+725136+285136+2813793(Top 52%)4456(Top 39%)4456(Top 245%)
23M23.00 mi1.25 mi15326+1815047+895047+8912950(Top 49%)4046(Top 35%)4046(Top 223%)
24M24.00 mi1.00 mi15138+1884938+1094938+10911632(Top 44%)3410(Top 30%)3410(Top 188%)
40K24.85 mi0.85 mi15015+1234885+534885+5311844(Top 44%)3591(Top 31%)3591(Top 198%)
25.2M25.20 mi0.35 mi14944+714853+324853+3211138(Top 42%)3296(Top 29%)3296(Top 181%)
Finish26.22 mi1.02 mi14732+2124748+1054748+1059598(Top 36%)2528(Top 22%)2528(Top 139%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 63%
×21stories
+97ft-345ft

Overall

16734

Females

5746

F45-49

5746

5K→10K

3.1 - 6.2 mi

Top 60%
×5stories
+79ft-138ft

Overall

15944

Females

5241

F45-49

5241

10K→15K

6.2 - 9.3 mi

Top 63%
×3stories
+67ft-78ft

Overall

16734

Females

5746

F45-49

5746

15K→20K

9.3 - 12.4 mi

Top 61%
×5stories
+106ft-86ft

Overall

16347

Females

5552

F45-49

5552

20K→Half

12.4 - 13.1 mi

Top 60%
×2stories
+19ft-37ft

Overall

15881

Females

5213

F45-49

5213

Half→25K

13.1 - 15.5 mi

Top 60%
×4stories
+66ft-88ft

Overall

15899

Females

5374

F45-49

5374

25K→30K

15.5 - 18.6 mi

Top 55%
×9stories
+181ft-148ft

Overall

14626

Females

4707

F45-49

4707

30K→20M

18.6 - 20.0 mi

Top 53%
×5stories
+64ft-50ft

Overall

14195

Females

4537

F45-49

4537

20M→21M

20.0 - 21.0 mi

Top 48%
×8stories
+106ft-24ft

Overall

12701

Females

3797

F45-49

3797

21M→35K

21.0 - 21.8 mi

Top 52%
×7stories
+17ft-86ft

Overall

13793

Females

4456

F45-49

4456

35K→23M

21.8 - 23.0 mi

Top 49%
×5stories
+23ft-63ft

Overall

12950

Females

4046

F45-49

4046

23M→24M

23.0 - 24.0 mi

Top 44%
×6stories
+12ft-82ft

Overall

11632

Females

3410

F45-49

3410

24M→40K

24.0 - 24.9 mi

Top 44%
×1story
+6ft-20ft

Overall

11844

Females

3591

F45-49

3591

40K→25.2M

24.9 - 25.2 mi

Top 42%
×1story
+13ft-16ft

Overall

11138

Females

3296

F45-49

3296

25.2M→Finish

25.2 - 26.2 mi

Top 36%
×2stories
+22ft-21ft

Overall

9598

Females

2528

F45-49

2528

Passing Analysis

Category:
Athletes Passed
2769
Passed By
813
Net Change
+1956
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16688
5K → 10K564144+420#16688#16268
10K → 15K134290-156#16268#16424
15K → 20K172167+5#16424#16419
20K → Half5017+33#16419#16386
Half → 25K18984+105#16386#16281
25K → 30K37533+342#16281#15939
30K → 20M18023+157#15939#15782
20M → 21M21310+203#15782#15579
21M → 35K8513+72#15579#15507
35K → 23M19716+181#15507#15326
23M → 24M1902+188#15326#15138
24M → 40K1307+123#15138#15015
40K → 25.2M754+71#15015#14944
25.2M → Finish2153+212#14944#14732
TOTALS2769813+1956
📊

Passing Visuals

Category:
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🔥Passing Intensity

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing