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BOSTON MARATHON 2023

Marguerite Zaepfel

Bib: 14356•F

WI

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 39%
Gender (Female)
#0 / 11423
Top 20%
Division (F18-39)
#0 / 4884
Top 35%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:22
Rank: #12779
Start → 5K
24:22 | 7:51/mi
10K· 6.21 mi
48:55
Rank: #13365 (-586)
5K → 10K
24:33 | 7:54/mi
15K· 9.32 mi
1:13:07
Rank: #13082 (+283)
10K → 15K
24:12 | 7:47/mi
20K· 12.43 mi
1:37:24
Rank: #12743 (+339)
15K → 20K
24:17 | 7:49/mi
Half· 13.11 mi
1:42:44
Rank: #12743
20K → Half
5:20 | 7:49/mi
25K· 15.53 mi
2:01:40
Rank: #12466 (+277)
Half → 25K
18:56 | 7:49/mi
30K· 18.64 mi
2:26:14
Rank: #11987 (+479)
25K → 30K
24:34 | 7:54/mi
20M
2:36:43
Rank: #11678 (+309)
30K → 20M
10:29 | 7:43/mi
21M
2:44:44
Rank: #11369 (+309)
20M → 21M
8:01 | 8:01/mi
35K· 21.75 mi
2:50:14
Rank: #11206 (+163)
21M → 35K
5:30 | 7:21/mi
23M
2:59:52
Rank: #10947 (+259)
35K → 23M
9:38 | 7:42/mi
24M
3:07:23
Rank: #10798 (+149)
23M → 24M
7:31 | 7:31/mi
40K· 24.85 mi
3:13:57
Rank: #10653 (+145)
24M → 40K
6:34 | 7:41/mi
25.2M
3:16:42
Rank: #10566 (+87)
40K → 25.2M
2:45 | 7:58/mi
Finish· 26.22 mi
3:24:06
Rank: #10387 (+179)
25.2M → Finish
7:24 | 7:16/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:42:44
Pace7:50 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:41:22
Pace7:44 /mi
📊Negative Split: 1.3% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:3924:227:5124:22
7:51
-
10K
6.21 mi11:18:1248:557:5224:33
7:54
+0:03
15K
9.32 mi11:42:241:13:077:5124:12
7:47
-0:07
20K
12.43 mi12:06:411:37:247:5024:17
7:49
+0:02
Half
13.11 mi12:12:011:42:447:505:20
7:49
0:00
25K
15.53 mi12:30:572:01:407:5018:56
7:49
0:00
30K
18.64 mi12:55:312:26:147:5124:34
7:54
+0:05
20M
20.00 mi13:06:002:36:437:5010:29
7:43
-0:11
21M
21.00 mi13:14:012:44:447:518:01
8:01
+0:18
35K
21.75 mi13:19:312:50:147:505:30
7:21
-0:40
23M
23.00 mi13:29:092:59:527:499:38
7:42
+0:21
24M
24.00 mi13:36:403:07:237:487:31
7:31
-0:11
40K
24.85 mi13:43:143:13:577:486:34
7:41
+0:10
25.2M
25.20 mi13:45:593:16:427:482:45
7:58
+0:17
Finish
26.22 mi13:53:233:24:067:477:24
7:16
-0:42

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

7:16 /mi

Average Pace

7:47 /mi

Slowest Pace

8:01 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:16:05

96% of race

Time at Steady Pace

8:01

4% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:47 /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 mi10:53:3924:227:5124:22
7:51
#12779
10K
6.21 mi11:18:1248:557:5224:33
7:54
#13365
15K
9.32 mi11:42:241:13:077:5124:12
7:47
#13082
20K
12.43 mi12:06:411:37:247:5024:17
7:49
#12743
Half
13.11 mi12:12:011:42:447:505:20
7:49
#12743
25K
15.53 mi12:30:572:01:407:5018:56
7:49
#12466
30K
18.64 mi12:55:312:26:147:5124:34
7:54
#11987
20M
20.00 mi13:06:002:36:437:5010:29
7:43
#11678
21M
21.00 mi13:14:012:44:447:518:01
8:01
#11369
35K
21.75 mi13:19:312:50:147:505:30
7:21
#11206
23M
23.00 mi13:29:092:59:527:499:38
7:42
#10947
24M
24.00 mi13:36:403:07:237:487:31
7:31
#10798
40K
24.85 mi13:43:143:13:577:486:34
7:41
#10653
25.2M
25.20 mi13:45:593:16:427:482:45
7:58
#10566
Finish
26.22 mi13:53:233:24:067:477:24
7:16
#10387
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi127793310331012647(Top 48%)3258(Top 29%)3258(Top 67%)
10K6.21 mi3.10 mi13365-5863661-3513661-35114003(Top 53%)4042(Top 35%)4042(Top 83%)
15K9.32 mi3.11 mi13082+2833511+1503511+15012647(Top 48%)3258(Top 29%)3258(Top 67%)
20K12.43 mi3.11 mi12743+3393326+1853326+18511873(Top 45%)2887(Top 25%)2887(Top 59%)
Half13.11 mi0.68 mi127433331-53331-512865(Top 48%)3394(Top 30%)3394(Top 69%)
25K15.53 mi2.42 mi12466+2773208+1233208+12311164(Top 42%)2566(Top 22%)2566(Top 53%)
30K18.64 mi3.11 mi11987+4792967+2412967+24110203(Top 38%)2256(Top 20%)2256(Top 46%)
20M20.00 mi1.36 mi11678+3092812+1552812+1558333(Top 31%)1537(Top 13%)1537(Top 31%)
21M21.00 mi1.00 mi11369+3092656+1562656+1567493(Top 28%)1324(Top 12%)1324(Top 27%)
35K21.75 mi0.75 mi11206+1632577+792577+797550(Top 28%)1342(Top 12%)1342(Top 27%)
23M23.00 mi1.25 mi10947+2592470+1072470+1077719(Top 29%)1467(Top 13%)1467(Top 30%)
24M24.00 mi1.00 mi10798+1492422+482422+487856(Top 30%)1631(Top 14%)1631(Top 33%)
40K24.85 mi0.85 mi10653+1452378+442378+447887(Top 30%)1717(Top 15%)1717(Top 35%)
25.2M25.20 mi0.35 mi10566+872353+252353+256459(Top 24%)1243(Top 11%)1243(Top 25%)
Finish26.22 mi1.02 mi10387+1792288+652288+656887(Top 26%)1392(Top 12%)1392(Top 29%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 48%
×21stories
+97ft-345ft

Overall

12647

Females

3258

F18-39

3258

5K→10K

3.1 - 6.2 mi

Top 53%
×5stories
+79ft-138ft

Overall

14003

Females

4042

F18-39

4042

10K→15K

6.2 - 9.3 mi

Top 48%
×3stories
+67ft-78ft

Overall

12647

Females

3258

F18-39

3258

15K→20K

9.3 - 12.4 mi

Top 45%
×5stories
+106ft-86ft

Overall

11873

Females

2887

F18-39

2887

20K→Half

12.4 - 13.1 mi

Top 48%
×2stories
+19ft-37ft

Overall

12865

Females

3394

F18-39

3394

Half→25K

13.1 - 15.5 mi

Top 42%
×4stories
+66ft-88ft

Overall

11164

Females

2566

F18-39

2566

25K→30K

15.5 - 18.6 mi

Top 38%
×9stories
+181ft-148ft

Overall

10203

Females

2256

F18-39

2256

30K→20M

18.6 - 20.0 mi

Top 31%
×5stories
+64ft-50ft

Overall

8333

Females

1537

F18-39

1537

20M→21M

20.0 - 21.0 mi

Top 28%
×8stories
+106ft-24ft

Overall

7493

Females

1324

F18-39

1324

21M→35K

21.0 - 21.8 mi

Top 28%
×7stories
+17ft-86ft

Overall

7550

Females

1342

F18-39

1342

35K→23M

21.8 - 23.0 mi

Top 29%
×5stories
+23ft-63ft

Overall

7719

Females

1467

F18-39

1467

23M→24M

23.0 - 24.0 mi

Top 30%
×6stories
+12ft-82ft

Overall

7856

Females

1631

F18-39

1631

24M→40K

24.0 - 24.9 mi

Top 30%
×1story
+6ft-20ft

Overall

7887

Females

1717

F18-39

1717

40K→25.2M

24.9 - 25.2 mi

Top 24%
×1story
+13ft-16ft

Overall

6459

Females

1243

F18-39

1243

25.2M→Finish

25.2 - 26.2 mi

Top 26%
×2stories
+22ft-21ft

Overall

6887

Females

1392

F18-39

1392

Passing Analysis

Category:
Athletes Passed
3352
Passed By
960
Net Change
+2392
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12779
5K → 10K109695-586#12779#13365
10K → 15K37592+283#13365#13082
15K → 20K37536+339#13082#12743
20K → Half35350#12743#12743
Half → 25K30629+277#12743#12466
25K → 30K50122+479#12466#11987
30K → 20M3134+309#11987#11678
20M → 21M3123+309#11678#11369
21M → 35K1663+163#11369#11206
35K → 23M2656+259#11206#10947
23M → 24M16112+149#10947#10798
24M → 40K1549+145#10798#10653
40K → 25.2M881+87#10653#10566
25.2M → Finish19213+179#10566#10387
TOTALS3352960+2392
📊

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