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BOSTON MARATHON 2023

Maddy Pfeifer

Bib: 10699•F

NH

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 16%
Gender (Female)
#0 / 11423
Top 2%
Division (F18-39)
#0 / 4884
Top 5%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:33
Rank: #2992
Start → 5K
20:33 | 6:37/mi
10K· 6.21 mi
41:00
Rank: #3159 (-167)
5K → 10K
20:27 | 6:35/mi
15K· 9.32 mi
1:01:54
Rank: #3492 (-333)
10K → 15K
20:54 | 6:44/mi
20K· 12.43 mi
1:22:53
Rank: #3603 (-111)
15K → 20K
20:59 | 6:45/mi
Half· 13.11 mi
1:27:27
Rank: #3632 (-29)
20K → Half
4:34 | 6:42/mi
25K· 15.53 mi
1:44:11
Rank: #3846 (-214)
Half → 25K
16:44 | 6:54/mi
30K· 18.64 mi
2:06:04
Rank: #3972 (-126)
25K → 30K
21:53 | 7:03/mi
20M
2:15:49
Rank: #4061 (-89)
30K → 20M
9:45 | 7:10/mi
21M
2:24:10
Rank: #4453 (-392)
20M → 21M
8:21 | 8:21/mi
35K· 21.75 mi
2:29:12
Rank: #4403 (+50)
21M → 35K
5:02 | 6:44/mi
23M
2:38:14
Rank: #4452 (-49)
35K → 23M
9:02 | 7:13/mi
24M
2:45:02
Rank: #4390 (+62)
23M → 24M
6:48 | 6:48/mi
40K· 24.85 mi
2:50:48
Rank: #4290 (+100)
24M → 40K
5:46 | 6:45/mi
25.2M
2:53:16
Rank: #4240 (+50)
40K → 25.2M
2:28 | 7:09/mi
Finish· 26.22 mi
2:59:54
Rank: #4168 (+72)
25.2M → Finish
6:38 | 6:31/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:27:27
Pace6:40 /mi
2nd Half
Distance13.11 mi
Time1:32:27
Pace7:03 /mi
📊Positive Split: 5.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:46:4320:336:3720:33
6:37
-
10K
6.21 mi11:07:1041:006:3620:27
6:35
-0:02
15K
9.32 mi11:28:041:01:546:3820:54
6:44
+0:09
20K
12.43 mi11:49:031:22:536:4020:59
6:45
+0:01
Half
13.11 mi11:53:371:27:276:404:34
6:42
-0:03
25K
15.53 mi12:10:211:44:116:4216:44
6:54
+0:12
30K
18.64 mi12:32:142:06:046:4621:53
7:03
+0:09
20M
20.00 mi12:41:592:15:496:479:45
7:10
+0:07
21M
21.00 mi12:50:202:24:106:528:21
8:21
+1:11
35K
21.75 mi12:55:222:29:126:525:02
6:44
-1:37
23M
23.00 mi13:04:242:38:146:539:02
7:13
+0:29
24M
24.00 mi13:11:122:45:026:536:48
6:48
-0:25
40K
24.85 mi13:16:582:50:486:525:46
6:45
-0:03
25.2M
25.20 mi13:19:262:53:166:532:28
7:09
+0:24
Finish
26.22 mi13:26:042:59:546:526:38
6:31
-0:38

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

6:31 /mi

Average Pace

6:52 /mi

Slowest Pace

8:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

6:38

4% of race

Time at Steady Pace

2:01:47

68% of race

Time at Slower Pace

51:29

29% of race

Average Pace: 6:52 /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 mi10:46:4320:336:3720:33
6:37
#2992
10K
6.21 mi11:07:1041:006:3620:27
6:35
#3159
15K
9.32 mi11:28:041:01:546:3820:54
6:44
#3492
20K
12.43 mi11:49:031:22:536:4020:59
6:45
#3603
Half
13.11 mi11:53:371:27:276:404:34
6:42
#3632
25K
15.53 mi12:10:211:44:116:4216:44
6:54
#3846
30K
18.64 mi12:32:142:06:046:4621:53
7:03
#3972
20M
20.00 mi12:41:592:15:496:479:45
7:10
#4061
21M
21.00 mi12:50:202:24:106:528:21
8:21
#4453
35K
21.75 mi12:55:222:29:126:525:02
6:44
#4403
23M
23.00 mi13:04:242:38:146:539:02
7:13
#4452
24M
24.00 mi13:11:122:45:026:536:48
6:48
#4390
40K
24.85 mi13:16:582:50:486:525:46
6:45
#4290
25.2M
25.20 mi13:19:262:53:166:532:28
7:09
#4240
Finish
26.22 mi13:26:042:59:546:526:38
6:31
#4168
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi29921501504418(Top 17%)280(Top 2%)280(Top 6%)
10K6.21 mi3.10 mi3159-167156-6156-63378(Top 13%)165(Top 1%)165(Top 3%)
15K9.32 mi3.11 mi3492-333183-27183-274418(Top 17%)280(Top 2%)280(Top 6%)
20K12.43 mi3.11 mi3603-111189-6189-64041(Top 15%)247(Top 2%)247(Top 5%)
Half13.11 mi0.68 mi3632-29190-1190-14375(Top 16%)284(Top 2%)284(Top 6%)
25K15.53 mi2.42 mi3846-214212-22212-224988(Top 19%)368(Top 3%)368(Top 8%)
30K18.64 mi3.11 mi3972-126229-17229-174642(Top 17%)347(Top 3%)347(Top 7%)
20M20.00 mi1.36 mi4061-89242-13242-135006(Top 19%)452(Top 4%)452(Top 9%)
21M21.00 mi1.00 mi4453-392294-52294-529537(Top 36%)2151(Top 19%)2151(Top 44%)
35K21.75 mi0.75 mi4403+50292+2292+23778(Top 14%)288(Top 3%)288(Top 6%)
23M23.00 mi1.25 mi4452-49296-4296-44898(Top 18%)501(Top 4%)501(Top 10%)
24M24.00 mi1.00 mi4390+62285+11285+113686(Top 14%)303(Top 3%)303(Top 6%)
40K24.85 mi0.85 mi4290+100280+5280+52598(Top 10%)197(Top 2%)197(Top 4%)
25.2M25.20 mi0.35 mi4240+50276+4276+42410(Top 9%)180(Top 2%)180(Top 4%)
Finish26.22 mi1.02 mi4168+72269+7269+72565(Top 10%)205(Top 2%)205(Top 4%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 17%
×21stories
+97ft-345ft

Overall

4418

Females

280

F18-39

280

5K→10K

3.1 - 6.2 mi

Top 13%
×5stories
+79ft-138ft

Overall

3378

Females

165

F18-39

165

10K→15K

6.2 - 9.3 mi

Top 17%
×3stories
+67ft-78ft

Overall

4418

Females

280

F18-39

280

15K→20K

9.3 - 12.4 mi

Top 15%
×5stories
+106ft-86ft

Overall

4041

Females

247

F18-39

247

20K→Half

12.4 - 13.1 mi

Top 16%
×2stories
+19ft-37ft

Overall

4375

Females

284

F18-39

284

Half→25K

13.1 - 15.5 mi

Top 19%
×4stories
+66ft-88ft

Overall

4988

Females

368

F18-39

368

25K→30K

15.5 - 18.6 mi

Top 17%
×9stories
+181ft-148ft

Overall

4642

Females

347

F18-39

347

30K→20M

18.6 - 20.0 mi

Top 19%
×5stories
+64ft-50ft

Overall

5006

Females

452

F18-39

452

20M→21M

20.0 - 21.0 mi

Top 36%
×8stories
+106ft-24ft

Overall

9537

Females

2151

F18-39

2151

21M→35K

21.0 - 21.8 mi

Top 14%
×7stories
+17ft-86ft

Overall

3778

Females

288

F18-39

288

35K→23M

21.8 - 23.0 mi

Top 18%
×5stories
+23ft-63ft

Overall

4898

Females

501

F18-39

501

23M→24M

23.0 - 24.0 mi

Top 14%
×6stories
+12ft-82ft

Overall

3686

Females

303

F18-39

303

24M→40K

24.0 - 24.9 mi

Top 10%
×1story
+6ft-20ft

Overall

2598

Females

197

F18-39

197

40K→25.2M

24.9 - 25.2 mi

Top 9%
×1story
+13ft-16ft

Overall

2410

Females

180

F18-39

180

25.2M→Finish

25.2 - 26.2 mi

Top 10%
×2stories
+22ft-21ft

Overall

2565

Females

205

F18-39

205

Passing Analysis

Category:
Athletes Passed
782
Passed By
1958
Net Change
-1176
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2992
5K → 10K95262-167#2992#3159
10K → 15K24357-333#3159#3492
15K → 20K47158-111#3492#3603
20K → Half938-29#3603#3632
Half → 25K33247-214#3632#3846
25K → 30K75201-126#3846#3972
30K → 20M31120-89#3972#4061
20M → 21M14406-392#4061#4453
21M → 35K6919+50#4453#4403
35K → 23M63112-49#4403#4452
23M → 24M8018+62#4452#4390
24M → 40K1044+100#4390#4290
40K → 25.2M533+50#4290#4240
25.2M → Finish8513+72#4240#4168
TOTALS7821958-1176
📊

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