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BOSTON MARATHON 2024

Hui Ju Chang

Bib: 22644•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Gender (Female)
#0 / 10924
Top 49%
Masters (Masters Women)
#0 / 6263
Top 39%
Division (F55-59)
#0 / 876
Top 20%
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:32
Rank: #13873
Start → 5K
24:32 | 7:54/mi
10K· 6.21 mi
49:18
Rank: #13936 (-63)
5K → 10K
24:46 | 7:58/mi
15K· 9.32 mi
1:15:03
Rank: #14404 (-468)
10K → 15K
25:45 | 8:17/mi
20K· 12.43 mi
1:41:56
Rank: #14742 (-338)
15K → 20K
26:53 | 8:39/mi
Half· 13.11 mi
1:47:37
Rank: #14733 (+9)
20K → Half
5:41 | 8:20/mi
25K· 15.53 mi
2:08:50
Rank: #14605 (+128)
Half → 25K
21:13 | 8:45/mi
30K· 18.64 mi
2:38:32
Rank: #14832 (-227)
25K → 30K
29:42 | 9:34/mi
20M
2:51:00
Rank: #14667 (+165)
30K → 20M
12:28 | 9:10/mi
21M
3:01:20
Rank: #14661 (+6)
20M → 21M
10:20 | 10:20/mi
35K· 21.75 mi
3:08:14
Rank: #14647 (+14)
21M → 35K
6:54 | 9:13/mi
23M
3:20:09
Rank: #14563 (+84)
35K → 23M
11:55 | 9:31/mi
24M
3:29:43
Rank: #14539 (+24)
23M → 24M
9:34 | 9:34/mi
40K· 24.85 mi
3:38:37
Rank: #14627 (-88)
24M → 40K
8:54 | 10:25/mi
25.2M
3:43:04
Rank: #14764 (-137)
40K → 25.2M
4:27 | 12:54/mi
Finish· 26.22 mi
3:53:05
Rank: #14914 (-150)
25.2M → Finish
10:01 | 9:50/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:47:37
Pace8:13 /mi
2nd Half
Distance13.11 mi
Time2:05:28
Pace9:34 /mi
📊Positive Split: 16.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:4024:327:5424:32
7:54
-
10K
6.21 mi11:46:2649:187:5624:46
7:58
+0:04
15K
9.32 mi12:12:111:15:038:0325:45
8:17
+0:19
20K
12.43 mi12:39:041:41:568:1226:53
8:39
+0:22
Half
13.11 mi12:44:451:47:378:135:41
8:20
-0:19
25K
15.53 mi13:05:582:08:508:1821:13
8:45
+0:25
30K
18.64 mi13:35:402:38:328:3029:42
9:34
+0:49
20M
20.00 mi13:48:082:51:008:3312:28
9:10
-0:24
21M
21.00 mi13:58:283:01:208:3810:20
10:20
+1:10
35K
21.75 mi14:05:223:08:148:396:54
9:13
-1:07
23M
23.00 mi14:17:173:20:098:4211:55
9:31
+0:18
24M
24.00 mi14:26:513:29:438:449:34
9:34
+0:03
40K
24.85 mi14:35:453:38:378:488:54
10:25
+0:51
25.2M
25.20 mi14:40:123:43:048:514:27
12:54
+2:29
Finish
26.22 mi14:50:133:53:058:5410:01
9:50
-3:04

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

7:54 /mi

Average Pace

8:54 /mi

Slowest Pace

12:54 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:20:44

35% of race

Time at Steady Pace

1:58:39

51% of race

Time at Slower Pace

33:42

14% of race

Average Pace: 8:53 /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 mi11:21:4024:327:5424:32
7:54
#13873
10K
6.21 mi11:46:2649:187:5624:46
7:58
#13936
15K
9.32 mi12:12:111:15:038:0325:45
8:17
#14404
20K
12.43 mi12:39:041:41:568:1226:53
8:39
#14742
Half
13.11 mi12:44:451:47:378:135:41
8:20
#14733
25K
15.53 mi13:05:582:08:508:1821:13
8:45
#14605
30K
18.64 mi13:35:402:38:328:3029:42
9:34
#14832
20M
20.00 mi13:48:082:51:008:3312:28
9:10
#14667
21M
21.00 mi13:58:283:01:208:3810:20
10:20
#14661
35K
21.75 mi14:05:223:08:148:396:54
9:13
#14647
23M
23.00 mi14:17:173:20:098:4211:55
9:31
#14563
24M
24.00 mi14:26:513:29:438:449:34
9:34
#14539
40K
24.85 mi14:35:453:38:378:488:54
10:25
#14627
25.2M
25.20 mi14:40:123:43:048:514:27
12:54
#14764
Finish
26.22 mi14:50:133:53:058:5410:01
9:50
#14914
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi138734236423615220(Top 60%)5099(Top 47%)5099(Top 582%)
10K6.21 mi3.10 mi13936-634299-634299-6314008(Top 55%)4358(Top 40%)4358(Top 497%)
15K9.32 mi3.11 mi14404-4684577-2784577-27815220(Top 60%)5099(Top 47%)5099(Top 582%)
20K12.43 mi3.11 mi14742-3384801-2244801-22415602(Top 61%)5348(Top 49%)5348(Top 611%)
Half13.11 mi0.68 mi14733+94804-34804-314838(Top 58%)4951(Top 45%)4951(Top 565%)
25K15.53 mi2.42 mi14605+1284760+444760+4414342(Top 56%)4801(Top 44%)4801(Top 548%)
30K18.64 mi3.11 mi14832-2274978-2184978-21815700(Top 61%)5799(Top 53%)5799(Top 662%)
20M20.00 mi1.36 mi14667+1654926+524926+5213024(Top 51%)4598(Top 42%)4598(Top 525%)
21M21.00 mi1.00 mi14661+64970-444970-4414265(Top 56%)5448(Top 50%)5448(Top 622%)
35K21.75 mi0.75 mi14647+145001-315001-3114380(Top 56%)5521(Top 51%)5521(Top 630%)
23M23.00 mi1.25 mi14563+845023-225023-2213621(Top 53%)5218(Top 48%)5218(Top 596%)
24M24.00 mi1.00 mi14539+245044-215044-2114756(Top 58%)5818(Top 53%)5818(Top 664%)
40K24.85 mi0.85 mi14627-885125-815125-8116425(Top 64%)6704(Top 61%)6704(Top 765%)
25.2M25.20 mi0.35 mi14764-1375217-925217-9219469(Top 76%)8244(Top 75%)8244(Top 941%)
Finish26.22 mi1.02 mi14914-1505330-1135330-11317827(Top 70%)7416(Top 68%)7416(Top 847%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 60%
×21stories
+97ft-345ft

Overall

15220

Females

5099

F55-59

5099

5K→10K

3.1 - 6.2 mi

Top 55%
×5stories
+79ft-138ft

Overall

14008

Females

4358

F55-59

4358

10K→15K

6.2 - 9.3 mi

Top 60%
×3stories
+67ft-78ft

Overall

15220

Females

5099

F55-59

5099

15K→20K

9.3 - 12.4 mi

Top 61%
×5stories
+106ft-86ft

Overall

15602

Females

5348

F55-59

5348

20K→Half

12.4 - 13.1 mi

Top 58%
×2stories
+19ft-37ft

Overall

14838

Females

4951

F55-59

4951

Half→25K

13.1 - 15.5 mi

Top 56%
×4stories
+66ft-88ft

Overall

14342

Females

4801

F55-59

4801

25K→30K

15.5 - 18.6 mi

Top 61%
×9stories
+181ft-148ft

Overall

15700

Females

5799

F55-59

5799

30K→20M

18.6 - 20.0 mi

Top 51%
×5stories
+64ft-50ft

Overall

13024

Females

4598

F55-59

4598

20M→21M

20.0 - 21.0 mi

Top 56%
×8stories
+106ft-24ft

Overall

14265

Females

5448

F55-59

5448

21M→35K

21.0 - 21.8 mi

Top 56%
×7stories
+17ft-86ft

Overall

14380

Females

5521

F55-59

5521

35K→23M

21.8 - 23.0 mi

Top 53%
×5stories
+23ft-63ft

Overall

13621

Females

5218

F55-59

5218

23M→24M

23.0 - 24.0 mi

Top 58%
×6stories
+12ft-82ft

Overall

14756

Females

5818

F55-59

5818

24M→40K

24.0 - 24.9 mi

Top 64%
×1story
+6ft-20ft

Overall

16425

Females

6704

F55-59

6704

40K→25.2M

24.9 - 25.2 mi

Top 76%
×1story
+13ft-16ft

Overall

19469

Females

8244

F55-59

8244

25.2M→Finish

25.2 - 26.2 mi

Top 70%
×2stories
+22ft-21ft

Overall

17827

Females

7416

F55-59

7416

Passing Analysis

Category:
Athletes Passed
1850
Passed By
2891
Net Change
-1041
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13873
5K → 10K272335-63#13873#13936
10K → 15K110578-468#13936#14404
15K → 20K139477-338#14404#14742
20K → Half4738+9#14742#14733
Half → 25K271143+128#14733#14605
25K → 30K185412-227#14605#14832
30K → 20M21247+165#14832#14667
20M → 21M128122+6#14667#14661
21M → 35K8874+14#14661#14647
35K → 23M17591+84#14647#14563
23M → 24M10278+24#14563#14539
24M → 40K61149-88#14539#14627
40K → 25.2M17154-137#14627#14764
25.2M → Finish43193-150#14764#14914
TOTALS18502891-1041
📊

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