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BOSTON MARATHON 2025

Chiung-Ying Chen

Bib: 23117•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F50-54)
#0 / 1303
Race Day Weather
50°/40°F
broken 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
9:15/mi
28:43
↑ 97↓ 3451.5%
10K· 6.21 mi
9:09/mi
57:09
↑ 79↓ 1380.4%
15K· 9.32 mi
10:04/mi
1:28:26
↑ 67↓ 78
20K· 12.43 mi
9:55/mi
1:59:15
↑ 106↓ 860.1%
Half· 13.11 mi
10:52/mi
2:06:40
↑ 19↓ 370.5%
25K· 15.53 mi
10:34/mi
2:32:17
↑ 66↓ 880.2%
30K· 18.64 mi
11:25/mi
3:07:46
↑ 181↓ 1480.2%
20M
10:39/mi
3:22:14
↑ 64↓ 500.2%
21M
12:17/mi
3:34:31
↑ 106↓ 241.6%
35K· 21.75 mi
11:28/mi
3:43:06
↑ 17↓ 861.7%
23M
10:39/mi
3:56:26
↑ 23↓ 630.6%
24M
10:27/mi
4:06:53
↓ 821.3%
40K· 24.85 mi
10:30/mi
4:15:52
↓ 200.3%
25.2M
12:31/mi
4:20:11
↑ 13↓ 160.2%
Finish· 26.22 mi
10:39/mi
4:31:02
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:06:40
Pace9:40 /mi
2nd Half
Distance13.11 mi
Time2:24:22
Pace11:01 /mi
📊Positive Split: 14.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:25:2628:439:1528:43
9:15
-
10K
6.21 mi11:53:5257:099:1228:26
9:09
-0:06
15K
9.32 mi12:25:091:28:269:2931:17
10:04
+0:55
20K
12.43 mi12:55:581:59:159:3630:49
9:55
-0:09
Half
13.11 mi13:03:232:06:409:407:25
10:52
+0:57
25K
15.53 mi13:29:002:32:179:4825:37
10:34
-0:18
30K
18.64 mi14:04:293:07:4610:0435:29
11:25
+0:51
20M
20.00 mi14:18:573:22:1410:0714:28
10:39
-0:46
21M
21.00 mi14:31:143:34:3110:1312:17
12:17
+1:38
35K
21.75 mi14:39:493:43:0610:168:35
11:28
-0:49
23M
23.00 mi14:53:093:56:2610:1713:20
10:39
-0:49
24M
24.00 mi15:03:364:06:5310:1710:27
10:27
-0:12
40K
24.85 mi15:12:354:15:5210:188:59
10:30
+0:03
25.2M
25.20 mi15:16:544:20:1110:194:19
12:31
+2:01
Finish
26.22 mi15:27:454:31:0210:2110:51
10:39
-1:52

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

9:09 /mi

Average Pace

10:21 /mi

Slowest Pace

12:31 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:59:15

44% of race

Time at Steady Pace

1:31:07

34% of race

Time at Slower Pace

1:00:40

22% of race

Average Pace: 10:20 /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 mi11:25:2628:439:1528:43
9:15
#23378
10K
6.21 mi11:53:5257:099:1228:26
9:09
#23199
15K
9.32 mi12:25:091:28:269:2931:17
10:04
#24004
20K
12.43 mi12:55:581:59:159:3630:49
9:55
#24004
Half
13.11 mi13:03:232:06:409:407:25
10:52
#24195
25K
15.53 mi13:29:002:32:179:4825:37
10:34
#24254
30K
18.64 mi14:04:293:07:4610:0435:29
11:25
#24392
20M
20.00 mi14:18:573:22:1410:0714:28
10:39
#24286
21M
21.00 mi14:31:143:34:3110:1312:17
12:17
#24267
35K
21.75 mi14:39:493:43:0610:168:35
11:28
#24296
23M
23.00 mi14:53:093:56:2610:1713:20
10:39
#24198
24M
24.00 mi15:03:364:06:5310:1710:27
10:27
#24144
40K
24.85 mi15:12:354:15:5210:188:59
10:30
#24071
25.2M
25.20 mi15:16:544:20:1110:194:19
12:31
#24076
Finish
26.22 mi15:27:454:31:0210:2110:51
10:39
#24109
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi233789377937725136(Top 88%)10298(Top 84%)10298(Top 790%)
10K6.21 mi3.10 mi23199+1799257+1209257+12023014(Top 81%)9145(Top 75%)9145(Top 702%)
15K9.32 mi3.11 mi24004-8059677-4209677-42025136(Top 88%)10298(Top 84%)10298(Top 790%)
20K12.43 mi3.11 mi240049696-199696-1924069(Top 85%)9749(Top 80%)9749(Top 748%)
Half13.11 mi0.68 mi24195-1919807-1119807-11126352(Top 93%)11028(Top 90%)11028(Top 846%)
25K15.53 mi2.42 mi24254-599851-449851-4424493(Top 86%)10011(Top 82%)10011(Top 768%)
30K18.64 mi3.11 mi24392-1389944-939944-9324736(Top 87%)10256(Top 84%)10256(Top 787%)
20M20.00 mi1.36 mi24286+1069904+409904+4022829(Top 80%)9335(Top 76%)9335(Top 716%)
21M21.00 mi1.00 mi24267+199910-69910-624078(Top 85%)10072(Top 82%)10072(Top 773%)
35K21.75 mi0.75 mi24296-299938-289938-2825058(Top 88%)10614(Top 87%)10614(Top 815%)
23M23.00 mi1.25 mi24198+989904+349904+3422417(Top 79%)9300(Top 76%)9300(Top 714%)
24M24.00 mi1.00 mi24144+549891+139891+1322695(Top 80%)9480(Top 78%)9480(Top 728%)
40K24.85 mi0.85 mi24071+739868+239868+2321980(Top 77%)9191(Top 75%)9191(Top 705%)
25.2M25.20 mi0.35 mi24076-59873-59873-524269(Top 85%)10297(Top 84%)10297(Top 790%)
Finish26.22 mi1.02 mi24109-339892-199892-1924622(Top 87%)10464(Top 86%)10464(Top 803%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 88%
×21story building
+97ft-345ft

Overall

25136

Females

10298

F50-54

10298

5K→10K

3.1 - 6.2 mi

Top 81%
×5story building
+79ft-138ft

Overall

23014

Females

9145

F50-54

9145

10K→15K

6.2 - 9.3 mi

Top 88%
×3story building
+67ft-78ft

Overall

25136

Females

10298

F50-54

10298

15K→20K

9.3 - 12.4 mi

Top 85%
×5story building
+106ft-86ft

Overall

24069

Females

9749

F50-54

9749

20K→Half

12.4 - 13.1 mi

Top 93%
×2story building
+19ft-37ft

Overall

26352

Females

11028

F50-54

11028

Half→25K

13.1 - 15.5 mi

Top 86%
×4story building
+66ft-88ft

Overall

24493

Females

10011

F50-54

10011

25K→30K

15.5 - 18.6 mi

Top 87%
×9story building
+181ft-148ft

Overall

24736

Females

10256

F50-54

10256

30K→20M

18.6 - 20.0 mi

Top 80%
×5story building
+64ft-50ft

Overall

22829

Females

9335

F50-54

9335

20M→21M

20.0 - 21.0 mi

Top 85%
×8story building
+106ft-24ft

Overall

24078

Females

10072

F50-54

10072

21M→35K

21.0 - 21.8 mi

Top 88%
×7story building
+17ft-86ft

Overall

25058

Females

10614

F50-54

10614

35K→23M

21.8 - 23.0 mi

Top 79%
×5story building
+23ft-63ft

Overall

22417

Females

9300

F50-54

9300

23M→24M

23.0 - 24.0 mi

Top 80%
×6story building
+12ft-82ft

Overall

22695

Females

9480

F50-54

9480

24M→40K

24.0 - 24.9 mi

Top 77%
×1story
+6ft-20ft

Overall

21980

Females

9191

F50-54

9191

40K→25.2M

24.9 - 25.2 mi

Top 85%
×1story
+13ft-16ft

Overall

24269

Females

10297

F50-54

10297

25.2M→Finish

25.2 - 26.2 mi

Top 87%
×2story building
+22ft-21ft

Overall

24622

Females

10464

F50-54

10464

Passing Analysis

Category:
Athletes Passed
1214
Passed By
1945
Net Change
-731
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23378
5K → 10K332153+179#23378#23199
10K → 15K31836-805#23199#24004
15K → 20K1441440#24004#24004
20K → Half2193-191#24004#24195
Half → 25K95154-59#24195#24254
25K → 30K89227-138#24254#24392
30K → 20M12014+106#24392#24286
20M → 21M7253+19#24286#24267
21M → 35K2655-29#24267#24296
35K → 23M11416+98#24296#24198
23M → 24M7117+54#24198#24144
24M → 40K8613+73#24144#24071
40K → 25.2M1419-5#24071#24076
25.2M → Finish1851-33#24076#24109
TOTALS12141945-731
📊

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