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BOSTON MARATHON 2025

Anne Chang

Bib: 13844•F

AB

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 46%
Gender (Female)
#0 / 12228
Top 31%
Masters (Masters Women)
#0 / 6759
Top 16%
Division (F45-49)
#0 / 1813
Top 18%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:43
Rank: #16245
Start → 5K
24:43 | 7:57/mi
10K· 6.21 mi
49:20
Rank: #16010 (+235)
5K → 10K
24:37 | 7:55/mi
15K· 9.32 mi
1:14:05
Rank: #15903 (+107)
10K → 15K
24:45 | 7:58/mi
20K· 12.43 mi
1:38:37
Rank: #15411 (+492)
15K → 20K
24:32 | 7:54/mi
Half· 13.11 mi
1:44:03
Rank: #15414 (-3)
20K → Half
5:26 | 7:58/mi
25K· 15.53 mi
2:03:26
Rank: #15126 (+288)
Half → 25K
19:23 | 8:00/mi
30K· 18.64 mi
2:28:28
Rank: #14408 (+718)
25K → 30K
25:02 | 8:03/mi
20M
2:39:51
Rank: #14254 (+154)
30K → 20M
11:23 | 8:23/mi
21M
2:48:22
Rank: #13982 (+272)
20M → 21M
8:31 | 8:31/mi
35K· 21.75 mi
2:54:16
Rank: #13867 (+115)
21M → 35K
5:54 | 7:53/mi
23M
3:04:16
Rank: #13605 (+262)
35K → 23M
10:00 | 7:59/mi
24M
3:12:07
Rank: #13428 (+177)
23M → 24M
7:51 | 7:51/mi
40K· 24.85 mi
3:18:45
Rank: #13237 (+191)
24M → 40K
6:38 | 7:45/mi
25.2M
3:21:38
Rank: #13154 (+83)
40K → 25.2M
2:53 | 8:22/mi
Finish· 26.22 mi
3:29:24
Rank: #13050 (+104)
25.2M → Finish
7:46 | 7:37/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:03
Pace7:56 /mi
2nd Half
Distance13.11 mi
Time1:45:21
Pace8:02 /mi
📊Positive Split: 1.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:5124:437:5724:43
7:57
-
10K
6.21 mi11:18:2849:207:5624:37
7:55
-0:02
15K
9.32 mi11:43:131:14:057:5724:45
7:58
+0:03
20K
12.43 mi12:07:451:38:377:5624:32
7:54
-0:04
Half
13.11 mi12:13:111:44:037:565:26
7:58
+0:04
25K
15.53 mi12:32:342:03:267:5719:23
8:00
+0:02
30K
18.64 mi12:57:362:28:287:5825:02
8:03
+0:03
20M
20.00 mi13:08:592:39:518:0011:23
8:23
+0:20
21M
21.00 mi13:17:302:48:228:018:31
8:31
+0:08
35K
21.75 mi13:23:242:54:168:015:54
7:53
-0:38
23M
23.00 mi13:33:243:04:168:0110:00
7:59
+0:06
24M
24.00 mi13:41:153:12:078:007:51
7:51
-0:08
40K
24.85 mi13:47:533:18:458:006:38
7:45
-0:06
25.2M
25.20 mi13:50:463:21:388:002:53
8:22
+0:37
Finish
26.22 mi13:58:323:29:248:007:46
7:37
-0:45

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

7:37 /mi

Average Pace

8:00 /mi

Slowest Pace

8:31 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:09:30

90% of race

Time at Steady Pace

19:54

10% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:59 /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 mi10:53:5124:437:5724:43
7:57
#16245
10K
6.21 mi11:18:2849:207:5624:37
7:55
#16010
15K
9.32 mi11:43:131:14:057:5724:45
7:58
#15903
20K
12.43 mi12:07:451:38:377:5624:32
7:54
#15411
Half
13.11 mi12:13:111:44:037:565:26
7:58
#15414
25K
15.53 mi12:32:342:03:267:5719:23
8:00
#15126
30K
18.64 mi12:57:362:28:287:5825:02
8:03
#14408
20M
20.00 mi13:08:592:39:518:0011:23
8:23
#14254
21M
21.00 mi13:17:302:48:228:018:31
8:31
#13982
35K
21.75 mi13:23:242:54:168:015:54
7:53
#13867
23M
23.00 mi13:33:243:04:168:0110:00
7:59
#13605
24M
24.00 mi13:41:153:12:078:007:51
7:51
#13428
40K
24.85 mi13:47:533:18:458:006:38
7:45
#13237
25.2M
25.20 mi13:50:463:21:388:002:53
8:22
#13154
Finish
26.22 mi13:58:323:29:248:007:46
7:37
#13050
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi162455290529015790(Top 56%)5027(Top 41%)5027(Top 277%)
10K6.21 mi3.10 mi16010+2355139+1515139+15115849(Top 56%)5033(Top 41%)5033(Top 278%)
15K9.32 mi3.11 mi15903+1075083+565083+5615790(Top 56%)5027(Top 41%)5027(Top 277%)
20K12.43 mi3.11 mi15411+4924812+2714812+27114069(Top 50%)4129(Top 34%)4129(Top 228%)
Half13.11 mi0.68 mi15414-34816-44816-415617(Top 55%)4937(Top 40%)4937(Top 272%)
25K15.53 mi2.42 mi15126+2884678+1384678+13813849(Top 49%)4129(Top 34%)4129(Top 228%)
30K18.64 mi3.11 mi14408+7184339+3394339+33911813(Top 42%)3203(Top 26%)3203(Top 177%)
20M20.00 mi1.36 mi14254+1544277+624277+6213008(Top 46%)3979(Top 33%)3979(Top 219%)
21M21.00 mi1.00 mi13982+2724153+1244153+12410623(Top 37%)2926(Top 24%)2926(Top 161%)
35K21.75 mi0.75 mi13867+1154114+394114+3911517(Top 41%)3389(Top 28%)3389(Top 187%)
23M23.00 mi1.25 mi13605+2624014+1004014+1009966(Top 35%)2733(Top 22%)2733(Top 151%)
24M24.00 mi1.00 mi13428+1773937+773937+7710241(Top 36%)2936(Top 24%)2936(Top 162%)
40K24.85 mi0.85 mi13237+1913861+763861+768542(Top 30%)2257(Top 18%)2257(Top 124%)
25.2M25.20 mi0.35 mi13154+833826+353826+358078(Top 28%)2136(Top 17%)2136(Top 118%)
Finish26.22 mi1.02 mi13050+1043787+393787+3910151(Top 36%)3071(Top 25%)3071(Top 169%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 56%
×21stories
+97ft-345ft

Overall

15790

Females

5027

F45-49

5027

5K→10K

3.1 - 6.2 mi

Top 56%
×5stories
+79ft-138ft

Overall

15849

Females

5033

F45-49

5033

10K→15K

6.2 - 9.3 mi

Top 56%
×3stories
+67ft-78ft

Overall

15790

Females

5027

F45-49

5027

15K→20K

9.3 - 12.4 mi

Top 50%
×5stories
+106ft-86ft

Overall

14069

Females

4129

F45-49

4129

20K→Half

12.4 - 13.1 mi

Top 55%
×2stories
+19ft-37ft

Overall

15617

Females

4937

F45-49

4937

Half→25K

13.1 - 15.5 mi

Top 49%
×4stories
+66ft-88ft

Overall

13849

Females

4129

F45-49

4129

25K→30K

15.5 - 18.6 mi

Top 42%
×9stories
+181ft-148ft

Overall

11813

Females

3203

F45-49

3203

30K→20M

18.6 - 20.0 mi

Top 46%
×5stories
+64ft-50ft

Overall

13008

Females

3979

F45-49

3979

20M→21M

20.0 - 21.0 mi

Top 37%
×8stories
+106ft-24ft

Overall

10623

Females

2926

F45-49

2926

21M→35K

21.0 - 21.8 mi

Top 41%
×7stories
+17ft-86ft

Overall

11517

Females

3389

F45-49

3389

35K→23M

21.8 - 23.0 mi

Top 35%
×5stories
+23ft-63ft

Overall

9966

Females

2733

F45-49

2733

23M→24M

23.0 - 24.0 mi

Top 36%
×6stories
+12ft-82ft

Overall

10241

Females

2936

F45-49

2936

24M→40K

24.0 - 24.9 mi

Top 30%
×1story
+6ft-20ft

Overall

8542

Females

2257

F45-49

2257

40K→25.2M

24.9 - 25.2 mi

Top 28%
×1story
+13ft-16ft

Overall

8078

Females

2136

F45-49

2136

25.2M→Finish

25.2 - 26.2 mi

Top 36%
×2stories
+22ft-21ft

Overall

10151

Females

3071

F45-49

3071

Passing Analysis

Category:
Athletes Passed
3778
Passed By
583
Net Change
+3195
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16245
5K → 10K440205+235#16245#16010
10K → 15K256149+107#16010#15903
15K → 20K51826+492#15903#15411
20K → Half3437-3#15411#15414
Half → 25K33042+288#15414#15126
25K → 30K72911+718#15126#14408
30K → 20M19743+154#14408#14254
20M → 21M28311+272#14254#13982
21M → 35K12813+115#13982#13867
35K → 23M2719+262#13867#13605
23M → 24M18912+177#13605#13428
24M → 40K1976+191#13428#13237
40K → 25.2M841+83#13237#13154
25.2M → Finish12218+104#13154#13050
TOTALS3778583+3195
📊

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