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BOSTON MARATHON 2024

Ching Miao Chang

Bib: 21962•F

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

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
9:08/mi
28:23
↑ 97↓ 3451.5%
10K· 6.21 mi
8:53/mi
56:00
↑ 79↓ 1380.4%
15K· 9.32 mi
9:06/mi
1:24:17
↑ 67↓ 78
20K· 12.43 mi
9:47/mi
1:54:42
↑ 106↓ 860.1%
Half· 13.11 mi
9:20/mi
2:01:04
↑ 19↓ 370.5%
25K· 15.53 mi
11:10/mi
2:28:08
↑ 66↓ 880.2%
30K· 18.64 mi
14:22/mi
3:12:45
↑ 181↓ 1480.2%
20M
11:00/mi
3:27:42
↑ 64↓ 500.2%
21M
13:31/mi
3:41:13
↑ 106↓ 241.6%
35K· 21.75 mi
10:35/mi
3:49:08
↑ 17↓ 861.7%
23M
11:03/mi
4:02:58
↑ 23↓ 630.6%
24M
12:40/mi
4:15:38
↓ 821.3%
40K· 24.85 mi
11:53/mi
4:25:48
↓ 200.3%
25.2M
13:17/mi
4:30:23
↑ 13↓ 160.2%
Finish· 26.22 mi
9:15/mi
4:39:49
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:01:04
Pace9:14 /mi
2nd Half
Distance13.11 mi
Time2:38:45
Pace12:07 /mi
📊Positive Split: 31.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:25:0228:239:0828:23
9:08
-
10K
6.21 mi11:52:3956:009:0127:37
8:53
-0:15
15K
9.32 mi12:20:561:24:179:0328:17
9:06
+0:13
20K
12.43 mi12:51:211:54:429:1430:25
9:47
+0:41
Half
13.11 mi12:57:432:01:049:146:22
9:20
-0:27
25K
15.53 mi13:24:472:28:089:3227:04
11:10
+1:50
30K
18.64 mi14:09:243:12:4510:2044:37
14:22
+3:12
20M
20.00 mi14:24:213:27:4210:2314:57
11:00
-3:22
21M
21.00 mi14:37:523:41:1310:3213:31
13:31
+2:31
35K
21.75 mi14:45:473:49:0810:327:55
10:35
-2:56
23M
23.00 mi14:59:374:02:5810:3413:50
11:03
+0:28
24M
24.00 mi15:12:174:15:3810:3912:40
12:40
+1:37
40K
24.85 mi15:22:274:25:4810:4210:10
11:53
-0:47
25.2M
25.20 mi15:27:024:30:2310:444:35
13:17
+1:24
Finish
26.22 mi15:36:284:39:4910:419:26
9:15
-4:02

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

8:53 /mi

Average Pace

10:41 /mi

Slowest Pace

14:22 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:10:30

47% of race

Time at Steady Pace

1:03:46

23% of race

Time at Slower Pace

1:25:33

31% of race

Average Pace: 10:40 /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 mi11:25:0228:239:0828:23
9:08
#20602
10K
6.21 mi11:52:3956:009:0127:37
8:53
#19965
15K
9.32 mi12:20:561:24:179:0328:17
9:06
#19743
20K
12.43 mi12:51:211:54:429:1430:25
9:47
#19868
Half
13.11 mi12:57:432:01:049:146:22
9:20
#19866
25K
15.53 mi13:24:472:28:089:3227:04
11:10
#20259
30K
18.64 mi14:09:243:12:4510:2044:37
14:22
#21605
20M
20.00 mi14:24:213:27:4210:2314:57
11:00
#21403
21M
21.00 mi14:37:523:41:1310:3213:31
13:31
#21441
35K
21.75 mi14:45:473:49:0810:327:55
10:35
#21342
23M
23.00 mi14:59:374:02:5810:3413:50
11:03
#21181
24M
24.00 mi15:12:174:15:3810:3912:40
12:40
#21261
40K
24.85 mi15:22:274:25:4810:4210:10
11:53
#21215
25.2M
25.20 mi15:27:024:30:2310:444:35
13:17
#21190
Finish
26.22 mi15:36:284:39:4910:419:26
9:15
#21019
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi206028202820219358(Top 76%)7444(Top 68%)7444(Top 850%)
10K6.21 mi3.10 mi19965+6377852+3507852+35019296(Top 76%)7451(Top 68%)7451(Top 851%)
15K9.32 mi3.11 mi19743+2227710+1427710+14219358(Top 76%)7444(Top 68%)7444(Top 850%)
20K12.43 mi3.11 mi19868-1257759-497759-4920038(Top 78%)7833(Top 72%)7833(Top 894%)
Half13.11 mi0.68 mi19866+27759775919563(Top 77%)7644(Top 70%)7644(Top 873%)
25K15.53 mi2.42 mi20259-3937973-2147973-21421809(Top 85%)8887(Top 81%)8887(Top 1014%)
30K18.64 mi3.11 mi21605-13468761-7888761-78824479(Top 96%)10399(Top 95%)10399(Top 1187%)
20M20.00 mi1.36 mi21403+2028684+778684+7719309(Top 76%)7869(Top 72%)7869(Top 898%)
21M21.00 mi1.00 mi21441-388724-408724-4021606(Top 85%)9102(Top 83%)9102(Top 1039%)
35K21.75 mi0.75 mi21342+998680+448680+4418817(Top 74%)7747(Top 71%)7747(Top 884%)
23M23.00 mi1.25 mi21181+1618631+498631+4918567(Top 73%)7684(Top 70%)7684(Top 877%)
24M24.00 mi1.00 mi21261-808693-628693-6222554(Top 88%)9692(Top 89%)9692(Top 1106%)
40K24.85 mi0.85 mi21215+468681+128681+1220246(Top 79%)8647(Top 79%)8647(Top 987%)
25.2M25.20 mi0.35 mi21190+258679+28679+220328(Top 80%)8681(Top 79%)8681(Top 991%)
Finish26.22 mi1.02 mi21019+1718594+858594+8515428(Top 60%)6229(Top 57%)6229(Top 711%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 76%
×21story building
+97ft-345ft

Overall

19358

Females

7444

F55-59

7444

5K→10K

3.1 - 6.2 mi

Top 76%
×5story building
+79ft-138ft

Overall

19296

Females

7451

F55-59

7451

10K→15K

6.2 - 9.3 mi

Top 76%
×3story building
+67ft-78ft

Overall

19358

Females

7444

F55-59

7444

15K→20K

9.3 - 12.4 mi

Top 78%
×5story building
+106ft-86ft

Overall

20038

Females

7833

F55-59

7833

20K→Half

12.4 - 13.1 mi

Top 77%
×2story building
+19ft-37ft

Overall

19563

Females

7644

F55-59

7644

Half→25K

13.1 - 15.5 mi

Top 85%
×4story building
+66ft-88ft

Overall

21809

Females

8887

F55-59

8887

25K→30K

15.5 - 18.6 mi

Top 96%
×9story building
+181ft-148ft

Overall

24479

Females

10399

F55-59

10399

30K→20M

18.6 - 20.0 mi

Top 76%
×5story building
+64ft-50ft

Overall

19309

Females

7869

F55-59

7869

20M→21M

20.0 - 21.0 mi

Top 85%
×8story building
+106ft-24ft

Overall

21606

Females

9102

F55-59

9102

21M→35K

21.0 - 21.8 mi

Top 74%
×7story building
+17ft-86ft

Overall

18817

Females

7747

F55-59

7747

35K→23M

21.8 - 23.0 mi

Top 73%
×5story building
+23ft-63ft

Overall

18567

Females

7684

F55-59

7684

23M→24M

23.0 - 24.0 mi

Top 88%
×6story building
+12ft-82ft

Overall

22554

Females

9692

F55-59

9692

24M→40K

24.0 - 24.9 mi

Top 79%
×1story
+6ft-20ft

Overall

20246

Females

8647

F55-59

8647

40K→25.2M

24.9 - 25.2 mi

Top 80%
×1story
+13ft-16ft

Overall

20328

Females

8681

F55-59

8681

25.2M→Finish

25.2 - 26.2 mi

Top 60%
×2story building
+22ft-21ft

Overall

15428

Females

6229

F55-59

6229

Passing Analysis

Category:
Athletes Passed
2222
Passed By
2639
Net Change
-417
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20602
5K → 10K70871+637#20602#19965
10K → 15K323101+222#19965#19743
15K → 20K194319-125#19743#19868
20K → Half3432+2#19868#19866
Half → 25K68461-393#19866#20259
25K → 30K161362-1346#20259#21605
30K → 20M2097+202#21605#21403
20M → 21M62100-38#21403#21441
21M → 35K10910+99#21441#21342
35K → 23M1687+161#21342#21181
23M → 24M42122-80#21181#21261
24M → 40K7428+46#21261#21215
40K → 25.2M4116+25#21215#21190
25.2M → Finish1743+171#21190#21019
TOTALS22222639-417
📊

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