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BOSTON MARATHON 2024

Chi Sai Jaze Chan

Bib: 18788•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Gender (Female)
#0 / 10924
Top 39%
Masters (Masters Women)
#0 / 6263
Top 27%
Division (F40-44)
#0 / 1613
Top 46%
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
8:08/mi
25:16
↑ 97↓ 3451.5%
10K· 6.21 mi
8:20/mi
51:10
↑ 79↓ 1380.4%
15K· 9.32 mi
8:23/mi
1:17:12
↑ 67↓ 78
20K· 12.43 mi
8:28/mi
1:43:29
↑ 106↓ 860.1%
Half· 13.11 mi
8:32/mi
1:49:18
↑ 19↓ 370.5%
25K· 15.53 mi
8:36/mi
2:10:10
↑ 66↓ 880.2%
30K· 18.64 mi
8:49/mi
2:37:34
↑ 181↓ 1480.2%
20M
8:48/mi
2:49:31
↑ 64↓ 500.2%
21M
9:48/mi
2:59:19
↑ 106↓ 241.6%
35K· 21.75 mi
8:32/mi
3:05:42
↑ 17↓ 861.7%
23M
8:50/mi
3:16:45
↑ 23↓ 630.6%
24M
8:16/mi
3:25:01
↓ 821.3%
40K· 24.85 mi
8:24/mi
3:32:12
↓ 200.3%
25.2M
9:54/mi
3:35:37
↑ 13↓ 160.2%
Finish· 26.22 mi
8:09/mi
3:43:55
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:49:18
Pace8:20 /mi
2nd Half
Distance13.11 mi
Time1:54:37
Pace8:45 /mi
📊Positive Split: 4.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:1725:168:0825:16
8:08
-
10K
6.21 mi11:43:1151:108:1425:54
8:20
+0:12
15K
9.32 mi12:09:131:17:128:1726:02
8:23
+0:03
20K
12.43 mi12:35:301:43:298:2026:17
8:28
+0:05
Half
13.11 mi12:41:191:49:188:205:49
8:32
+0:04
25K
15.53 mi13:02:112:10:108:2320:52
8:36
+0:04
30K
18.64 mi13:29:352:37:348:2727:24
8:49
+0:13
20M
20.00 mi13:41:322:49:318:2911:57
8:48
-0:01
21M
21.00 mi13:51:202:59:198:329:48
9:48
+1:00
35K
21.75 mi13:57:433:05:428:326:23
8:32
-1:16
23M
23.00 mi14:08:463:16:458:3311:03
8:50
+0:18
24M
24.00 mi14:17:023:25:018:338:16
8:16
-0:34
40K
24.85 mi14:24:133:32:128:327:11
8:24
+0:08
25.2M
25.20 mi14:27:383:35:378:333:25
9:54
+1:30
Finish
26.22 mi14:35:563:43:558:338:18
8:09
-1:45

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

8:08 /mi

Average Pace

8:33 /mi

Slowest Pace

9:54 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

41:50

19% of race

Time at Steady Pace

1:58:28

53% of race

Time at Slower Pace

1:03:37

28% of race

Average Pace: 8:32 /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 mi11:17:1725:168:0825:16
8:08
#15602
10K
6.21 mi11:43:1151:108:1425:54
8:20
#15955
15K
9.32 mi12:09:131:17:128:1726:02
8:23
#15803
20K
12.43 mi12:35:301:43:298:2026:17
8:28
#15432
Half
13.11 mi12:41:191:49:188:205:49
8:32
#15446
25K
15.53 mi13:02:112:10:108:2320:52
8:36
#15093
30K
18.64 mi13:29:352:37:348:2727:24
8:49
#14543
20M
20.00 mi13:41:322:49:318:2911:57
8:48
#14236
21M
21.00 mi13:51:202:59:198:329:48
9:48
#14076
35K
21.75 mi13:57:433:05:428:326:23
8:32
#13935
23M
23.00 mi14:08:463:16:458:3311:03
8:50
#13668
24M
24.00 mi14:17:023:25:018:338:16
8:16
#13396
40K
24.85 mi14:24:133:32:128:327:11
8:24
#13129
25.2M
25.20 mi14:27:383:35:378:333:25
9:54
#13063
Finish
26.22 mi14:35:563:43:558:338:18
8:09
#12879
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi156025320532015714(Top 62%)5397(Top 49%)5397(Top 335%)
10K6.21 mi3.10 mi15955-3535502-1825502-18216343(Top 64%)5729(Top 52%)5729(Top 355%)
15K9.32 mi3.11 mi15803+1525444+585444+5815714(Top 62%)5397(Top 49%)5397(Top 335%)
20K12.43 mi3.11 mi15432+3715225+2195225+21914597(Top 57%)4772(Top 44%)4772(Top 296%)
Half13.11 mi0.68 mi15446-145236-115236-1115881(Top 62%)5549(Top 51%)5549(Top 344%)
25K15.53 mi2.42 mi15093+3535052+1845052+18413627(Top 53%)4395(Top 40%)4395(Top 272%)
30K18.64 mi3.11 mi14543+5504808+2444808+24412294(Top 48%)3889(Top 36%)3889(Top 241%)
20M20.00 mi1.36 mi14236+3074675+1334675+13311076(Top 43%)3518(Top 32%)3518(Top 218%)
21M21.00 mi1.00 mi14076+1604637+384637+3812153(Top 48%)4337(Top 40%)4337(Top 269%)
35K21.75 mi0.75 mi13935+1414594+434594+4310971(Top 43%)3739(Top 34%)3739(Top 232%)
23M23.00 mi1.25 mi13668+2674507+874507+8710268(Top 40%)3536(Top 32%)3536(Top 219%)
24M24.00 mi1.00 mi13396+2724402+1054402+1058163(Top 32%)2573(Top 24%)2573(Top 160%)
40K24.85 mi0.85 mi13129+2674290+1124290+1127904(Top 31%)2562(Top 23%)2562(Top 159%)
25.2M25.20 mi0.35 mi13063+664275+154275+1510607(Top 42%)3916(Top 36%)3916(Top 243%)
Finish26.22 mi1.02 mi12879+1844218+574218+579495(Top 37%)3284(Top 30%)3284(Top 204%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 62%
×21story building
+97ft-345ft

Overall

15714

Females

5397

F40-44

5397

5K→10K

3.1 - 6.2 mi

Top 64%
×5story building
+79ft-138ft

Overall

16343

Females

5729

F40-44

5729

10K→15K

6.2 - 9.3 mi

Top 62%
×3story building
+67ft-78ft

Overall

15714

Females

5397

F40-44

5397

15K→20K

9.3 - 12.4 mi

Top 57%
×5story building
+106ft-86ft

Overall

14597

Females

4772

F40-44

4772

20K→Half

12.4 - 13.1 mi

Top 62%
×2story building
+19ft-37ft

Overall

15881

Females

5549

F40-44

5549

Half→25K

13.1 - 15.5 mi

Top 53%
×4story building
+66ft-88ft

Overall

13627

Females

4395

F40-44

4395

25K→30K

15.5 - 18.6 mi

Top 48%
×9story building
+181ft-148ft

Overall

12294

Females

3889

F40-44

3889

30K→20M

18.6 - 20.0 mi

Top 43%
×5story building
+64ft-50ft

Overall

11076

Females

3518

F40-44

3518

20M→21M

20.0 - 21.0 mi

Top 48%
×8story building
+106ft-24ft

Overall

12153

Females

4337

F40-44

4337

21M→35K

21.0 - 21.8 mi

Top 43%
×7story building
+17ft-86ft

Overall

10971

Females

3739

F40-44

3739

35K→23M

21.8 - 23.0 mi

Top 40%
×5story building
+23ft-63ft

Overall

10268

Females

3536

F40-44

3536

23M→24M

23.0 - 24.0 mi

Top 32%
×6story building
+12ft-82ft

Overall

8163

Females

2573

F40-44

2573

24M→40K

24.0 - 24.9 mi

Top 31%
×1story
+6ft-20ft

Overall

7904

Females

2562

F40-44

2562

40K→25.2M

24.9 - 25.2 mi

Top 42%
×1story
+13ft-16ft

Overall

10607

Females

3916

F40-44

3916

25.2M→Finish

25.2 - 26.2 mi

Top 37%
×2story building
+22ft-21ft

Overall

9495

Females

3284

F40-44

3284

Passing Analysis

Category:
Athletes Passed
3724
Passed By
1001
Net Change
+2723
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15602
5K → 10K159512-353#15602#15955
10K → 15K302150+152#15955#15803
15K → 20K44372+371#15803#15432
20K → Half3347-14#15432#15446
Half → 25K40047+353#15446#15093
25K → 30K60050+550#15093#14543
30K → 20M32316+307#14543#14236
20M → 21M21050+160#14236#14076
21M → 35K15716+141#14076#13935
35K → 23M28417+267#13935#13668
23M → 24M2742+272#13668#13396
24M → 40K2703+267#13396#13129
40K → 25.2M748+66#13129#13063
25.2M → Finish19511+184#13063#12879
TOTALS37241001+2723
📊

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