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BOSTON MARATHON 2024

Yin Tze Chang

Bib: 19133•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Gender (Female)
#0 / 10924
Masters (Masters Women)
#0 / 6263
Division (F40-44)
#0 / 1613
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
9:04/mi
28:11
↑ 97↓ 3451.5%
10K· 6.21 mi
9:25/mi
57:26
↑ 79↓ 1380.4%
15K· 9.32 mi
9:41/mi
1:27:30
↑ 67↓ 78
20K· 12.43 mi
10:07/mi
1:58:55
↑ 106↓ 860.1%
Half· 13.11 mi
10:02/mi
2:05:46
↑ 19↓ 370.5%
25K· 15.53 mi
10:32/mi
2:31:19
↑ 66↓ 880.2%
30K· 18.64 mi
11:18/mi
3:06:24
↑ 181↓ 1480.2%
20M
11:54/mi
3:22:34
↑ 64↓ 500.2%
21M
12:36/mi
3:35:10
↑ 106↓ 241.6%
35K· 21.75 mi
11:46/mi
3:43:58
↑ 17↓ 861.7%
23M
12:09/mi
3:59:11
↑ 23↓ 630.6%
24M
11:53/mi
4:11:04
↓ 821.3%
40K· 24.85 mi
11:50/mi
4:21:11
↓ 200.3%
25.2M
13:09/mi
4:25:43
↑ 13↓ 160.2%
Finish· 26.22 mi
11:26/mi
4:37:22
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:05:46
Pace9:36 /mi
2nd Half
Distance13.11 mi
Time2:31:36
Pace11:34 /mi
📊Positive Split: 20.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:3128:119:0428:11
9:04
-
10K
6.21 mi11:50:4657:269:1529:15
9:25
+0:21
15K
9.32 mi12:20:501:27:309:2330:04
9:41
+0:16
20K
12.43 mi12:52:151:58:559:3431:25
10:07
+0:26
Half
13.11 mi12:59:062:05:469:366:51
10:02
-0:05
25K
15.53 mi13:24:392:31:199:4425:33
10:32
+0:30
30K
18.64 mi13:59:443:06:2410:0035:05
11:18
+0:46
20M
20.00 mi14:15:543:22:3410:0816:10
11:54
+0:36
21M
21.00 mi14:28:303:35:1010:1512:36
12:36
+0:42
35K
21.75 mi14:37:183:43:5810:188:48
11:46
-0:50
23M
23.00 mi14:52:313:59:1110:2415:13
12:09
+0:23
24M
24.00 mi15:04:244:11:0410:2811:53
11:53
-0:16
40K
24.85 mi15:14:314:21:1110:3110:07
11:50
-0:03
25.2M
25.20 mi15:19:034:25:4310:334:32
13:09
+1:19
Finish
26.22 mi15:30:424:37:2210:3511:39
11:26
-1:43

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

9:04 /mi

Average Pace

10:35 /mi

Slowest Pace

13:09 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:31:19

55% of race

Time at Steady Pace

1:33:42

34% of race

Time at Slower Pace

32:21

12% of race

Average Pace: 10:35 /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 mi11:21:3128:119:0428:11
9:04
#20359
10K
6.21 mi11:50:4657:269:1529:15
9:25
#20795
15K
9.32 mi12:20:501:27:309:2330:04
9:41
#20904
20K
12.43 mi12:52:151:58:559:3431:25
10:07
#20864
Half
13.11 mi12:59:062:05:469:366:51
10:02
#20890
25K
15.53 mi13:24:392:31:199:4425:33
10:32
#20800
30K
18.64 mi13:59:443:06:2410:0035:05
11:18
#20763
20M
20.00 mi14:15:543:22:3410:0816:10
11:54
#20798
21M
21.00 mi14:28:303:35:1010:1512:36
12:36
#20744
35K
21.75 mi14:37:183:43:5810:188:48
11:46
#20778
23M
23.00 mi14:52:313:59:1110:2415:13
12:09
#20797
24M
24.00 mi15:04:244:11:0410:2811:53
11:53
#20816
40K
24.85 mi15:14:314:21:1110:3110:07
11:50
#20784
25.2M
25.20 mi15:19:034:25:4310:334:32
13:09
#20751
Finish
26.22 mi15:30:424:37:2210:3511:39
11:26
#20798
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi203598075807521148(Top 83%)8405(Top 77%)8405(Top 521%)
10K6.21 mi3.10 mi20795-4368272-1978272-19721130(Top 83%)8437(Top 77%)8437(Top 523%)
15K9.32 mi3.11 mi20904-1098314-428314-4221148(Top 83%)8405(Top 77%)8405(Top 521%)
20K12.43 mi3.11 mi20864+408286+288286+2820824(Top 82%)8255(Top 76%)8255(Top 512%)
Half13.11 mi0.68 mi20890-268298-128298-1221574(Top 84%)8718(Top 80%)8718(Top 540%)
25K15.53 mi2.42 mi20800+908276+228276+2220498(Top 80%)8187(Top 75%)8187(Top 508%)
30K18.64 mi3.11 mi20763+378304-288304-2820614(Top 81%)8430(Top 77%)8430(Top 523%)
20M20.00 mi1.36 mi20798-358355-518355-5121171(Top 83%)8846(Top 81%)8846(Top 548%)
21M21.00 mi1.00 mi20744+548352+38352+320058(Top 79%)8362(Top 77%)8362(Top 518%)
35K21.75 mi0.75 mi20778-348386-348386-3421382(Top 84%)9038(Top 83%)9038(Top 560%)
23M23.00 mi1.25 mi20797-198429-438429-4321073(Top 82%)8919(Top 82%)8919(Top 553%)
24M24.00 mi1.00 mi20816-198454-258454-2521228(Top 83%)9052(Top 83%)9052(Top 561%)
40K24.85 mi0.85 mi20784+328454845420117(Top 79%)8588(Top 79%)8588(Top 532%)
25.2M25.20 mi0.35 mi20751+338440+148440+1420014(Top 78%)8527(Top 78%)8527(Top 529%)
Finish26.22 mi1.02 mi20798-478480-408480-4022302(Top 87%)9595(Top 88%)9595(Top 595%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 83%
×21story building
+97ft-345ft

Overall

21148

Females

8405

F40-44

8405

5K→10K

3.1 - 6.2 mi

Top 83%
×5story building
+79ft-138ft

Overall

21130

Females

8437

F40-44

8437

10K→15K

6.2 - 9.3 mi

Top 83%
×3story building
+67ft-78ft

Overall

21148

Females

8405

F40-44

8405

15K→20K

9.3 - 12.4 mi

Top 82%
×5story building
+106ft-86ft

Overall

20824

Females

8255

F40-44

8255

20K→Half

12.4 - 13.1 mi

Top 84%
×2story building
+19ft-37ft

Overall

21574

Females

8718

F40-44

8718

Half→25K

13.1 - 15.5 mi

Top 80%
×4story building
+66ft-88ft

Overall

20498

Females

8187

F40-44

8187

25K→30K

15.5 - 18.6 mi

Top 81%
×9story building
+181ft-148ft

Overall

20614

Females

8430

F40-44

8430

30K→20M

18.6 - 20.0 mi

Top 83%
×5story building
+64ft-50ft

Overall

21171

Females

8846

F40-44

8846

20M→21M

20.0 - 21.0 mi

Top 79%
×8story building
+106ft-24ft

Overall

20058

Females

8362

F40-44

8362

21M→35K

21.0 - 21.8 mi

Top 84%
×7story building
+17ft-86ft

Overall

21382

Females

9038

F40-44

9038

35K→23M

21.8 - 23.0 mi

Top 82%
×5story building
+23ft-63ft

Overall

21073

Females

8919

F40-44

8919

23M→24M

23.0 - 24.0 mi

Top 83%
×6story building
+12ft-82ft

Overall

21228

Females

9052

F40-44

9052

24M→40K

24.0 - 24.9 mi

Top 79%
×1story
+6ft-20ft

Overall

20117

Females

8588

F40-44

8588

40K→25.2M

24.9 - 25.2 mi

Top 78%
×1story
+13ft-16ft

Overall

20014

Females

8527

F40-44

8527

25.2M→Finish

25.2 - 26.2 mi

Top 87%
×2story building
+22ft-21ft

Overall

22302

Females

9595

F40-44

9595

Passing Analysis

Category:
Athletes Passed
1377
Passed By
1816
Net Change
-439
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20359
5K → 10K113549-436#20359#20795
10K → 15K163272-109#20795#20904
15K → 20K207167+40#20904#20864
20K → Half2551-26#20864#20890
Half → 25K18999+90#20890#20800
25K → 30K186149+37#20800#20763
30K → 20M72107-35#20763#20798
20M → 21M10854+54#20798#20744
21M → 35K4882-34#20744#20778
35K → 23M6988-19#20778#20797
23M → 24M5069-19#20797#20816
24M → 40K6735+32#20816#20784
40K → 25.2M4512+33#20784#20751
25.2M → Finish3582-47#20751#20798
TOTALS13771816-439
📊

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