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BOSTON MARATHON 2024

Sarah Chao

Bib: 27895 F US

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Gender (Female)
#0 / 10924
Masters (Masters Women)
#0 / 6263
Division (F55-59)
#0 / 876
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
9:51/mi
30:37
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
9:41/mi
1:00:42
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
9:57/mi
1:31:37
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
10:23/mi
2:03:54
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
10:21/mi
2:10:58
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
11:00/mi
2:37:38
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
11:45/mi
3:14:07
↑ 181↓ 1480.2%
138 ft elev
20M
11:43/mi
3:30:02
↑ 64↓ 500.2%
148 ft elev
21M
12:17/mi
3:42:19
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
11:16/mi
3:50:45
↑ 17↓ 861.7%
156 ft elev
23M
12:08/mi
4:05:56
↑ 23↓ 630.6%
116 ft elev
24M
11:25/mi
4:17:21
↓ 821.3%
34 ft elev
40K· 24.85 mi
11:42/mi
4:27:21
↓ 200.3%
20 ft elev
25.2M
13:38/mi
4:32:03
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
10:49/mi
4:43:04
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:10:58
Pace9:59 /mi
2nd Half
Distance13.11 mi
Time2:32:06
Pace11:36 /mi
📊Positive Split: 16.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:49:2930:379:5130:37
9:51
-
10K
6.21 mi12:19:341:00:429:4630:05
9:41
-0:10
15K
9.32 mi12:50:291:31:379:5030:55
9:57
+0:16
20K
12.43 mi13:22:462:03:549:5832:17
10:23
+0:26
Half
13.11 mi13:29:502:10:589:597:04
10:21
-0:02
25K
15.53 mi13:56:302:37:3810:0926:40
11:00
+0:39
30K
18.64 mi14:32:593:14:0710:2536:29
11:45
+0:45
20M
20.00 mi14:48:543:30:0210:3015:55
11:43
-0:02
21M
21.00 mi15:01:113:42:1910:3512:17
12:17
+0:34
35K
21.75 mi15:09:373:50:4510:378:26
11:16
-1:01
23M
23.00 mi15:24:484:05:5610:4215:11
12:08
+0:52
24M
24.00 mi15:36:134:17:2110:4311:25
11:25
-0:43
40K
24.85 mi15:46:134:27:2110:4510:00
11:42
+0:17
25.2M
25.20 mi15:50:554:32:0310:484:42
13:38
+1:56
Finish
26.22 mi16:01:564:43:0410:4811:01
10:49
-2:49

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

9:41 /mi

Average Pace

10:48 /mi

Slowest Pace

13:38 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:10:58

46% of race

Time at Steady Pace

1:59:56

42% of race

Time at Slower Pace

32:10

11% of race

Average Pace: 10:48 /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 mi11:49:2930:379:5130:37
9:51
#22646
10K
6.21 mi12:19:341:00:429:4630:05
9:41
#22247
15K
9.32 mi12:50:291:31:379:5030:55
9:57
#22073
20K
12.43 mi13:22:462:03:549:5832:17
10:23
#21900
Half
13.11 mi13:29:502:10:589:597:04
10:21
#21912
25K
15.53 mi13:56:302:37:3810:0926:40
11:00
#21852
30K
18.64 mi14:32:593:14:0710:2536:29
11:45
#21773
20M
20.00 mi14:48:543:30:0210:3015:55
11:43
#21692
21M
21.00 mi15:01:113:42:1910:3512:17
12:17
#21576
35K
21.75 mi15:09:373:50:4510:378:26
11:16
#21524
23M
23.00 mi15:24:484:05:5610:4215:11
12:08
#21480
24M
24.00 mi15:36:134:17:2110:4311:25
11:25
#21410
40K
24.85 mi15:46:134:27:2110:4510:00
11:42
#21359
25.2M
25.20 mi15:50:554:32:0310:484:42
13:38
#21344
Finish
26.22 mi16:01:564:43:0410:4811:01
10:49
#21310
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi226469229922921818(Top 85%)8776(Top 80%)8776(Top 1002%)
10K6.21 mi3.10 mi22247+3999024+2059024+20521813(Top 85%)8807(Top 81%)8807(Top 1005%)
15K9.32 mi3.11 mi22073+1748938+868938+8621818(Top 85%)8776(Top 80%)8776(Top 1002%)
20K12.43 mi3.11 mi21900+1738849+898849+8921443(Top 84%)8602(Top 79%)8602(Top 982%)
Half13.11 mi0.68 mi21912-128862-138862-1322380(Top 88%)9163(Top 84%)9163(Top 1046%)
25K15.53 mi2.42 mi21852+608851+118851+1121490(Top 84%)8734(Top 80%)8734(Top 997%)
30K18.64 mi3.11 mi21773+798857-68857-621497(Top 84%)8898(Top 81%)8898(Top 1016%)
20M20.00 mi1.36 mi21692+818838+198838+1920853(Top 82%)8667(Top 79%)8667(Top 989%)
21M21.00 mi1.00 mi21576+1168791+478791+4719440(Top 76%)8043(Top 74%)8043(Top 918%)
35K21.75 mi0.75 mi21524+528781+108781+1020402(Top 80%)8543(Top 78%)8543(Top 975%)
23M23.00 mi1.25 mi21480+448784-38784-321010(Top 82%)8892(Top 81%)8892(Top 1015%)
24M24.00 mi1.00 mi21410+708765+198765+1920260(Top 79%)8562(Top 78%)8562(Top 977%)
40K24.85 mi0.85 mi21359+518762+38762+319795(Top 77%)8398(Top 77%)8398(Top 959%)
25.2M25.20 mi0.35 mi21344+158762876220981(Top 82%)8978(Top 82%)8978(Top 1025%)
Finish26.22 mi1.02 mi21310+348759+38759+320871(Top 82%)8916(Top 82%)8916(Top 1018%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 85%
×21story building
+97ft-345ft

Overall

21818

Females

8776

F55-59

8776

5K→10K

3.1 - 6.2 mi

Top 85%
×5story building
+79ft-138ft

Overall

21813

Females

8807

F55-59

8807

10K→15K

6.2 - 9.3 mi

Top 85%
×3story building
+67ft-78ft

Overall

21818

Females

8776

F55-59

8776

15K→20K

9.3 - 12.4 mi

Top 84%
×5story building
+106ft-86ft

Overall

21443

Females

8602

F55-59

8602

20K→Half

12.4 - 13.1 mi

Top 88%
×2story building
+19ft-37ft

Overall

22380

Females

9163

F55-59

9163

Half→25K

13.1 - 15.5 mi

Top 84%
×4story building
+66ft-88ft

Overall

21490

Females

8734

F55-59

8734

25K→30K

15.5 - 18.6 mi

Top 84%
×9story building
+181ft-148ft

Overall

21497

Females

8898

F55-59

8898

30K→20M

18.6 - 20.0 mi

Top 82%
×5story building
+64ft-50ft

Overall

20853

Females

8667

F55-59

8667

20M→21M

20.0 - 21.0 mi

Top 76%
×8story building
+106ft-24ft

Overall

19440

Females

8043

F55-59

8043

21M→35K

21.0 - 21.8 mi

Top 80%
×7story building
+17ft-86ft

Overall

20402

Females

8543

F55-59

8543

35K→23M

21.8 - 23.0 mi

Top 82%
×5story building
+23ft-63ft

Overall

21010

Females

8892

F55-59

8892

23M→24M

23.0 - 24.0 mi

Top 79%
×6story building
+12ft-82ft

Overall

20260

Females

8562

F55-59

8562

24M→40K

24.0 - 24.9 mi

Top 77%
×1story
+6ft-20ft

Overall

19795

Females

8398

F55-59

8398

40K→25.2M

24.9 - 25.2 mi

Top 82%
×1story
+13ft-16ft

Overall

20981

Females

8978

F55-59

8978

25.2M→Finish

25.2 - 26.2 mi

Top 82%
×2story building
+22ft-21ft

Overall

20871

Females

8916

F55-59

8916

Passing Analysis

Category:
Athletes Passed
2080
Passed By
744
Net Change
+1336
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22646
5K → 10K46364+399#22646#22247
10K → 15K274100+174#22247#22073
15K → 20K25582+173#22073#21900
20K → Half2133-12#21900#21912
Half → 25K173113+60#21912#21852
25K → 30K214135+79#21852#21773
30K → 20M11433+81#21773#21692
20M → 21M13721+116#21692#21576
21M → 35K7523+52#21576#21524
35K → 23M9652+44#21524#21480
23M → 24M8919+70#21480#21410
24M → 40K7524+51#21410#21359
40K → 25.2M3116+15#21359#21344
25.2M → Finish6329+34#21344#21310
TOTALS2080744+1336
📊

Passing Visuals

Category:
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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