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BOSTON MARATHON 2025

Chen Cheng

Bib: 20137•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Top 48%
Division (F40-44)
#0 / 1718
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:01
Rank: #17035
Start → 5K
25:01 | 8:03/mi
10K· 6.21 mi
50:39
Rank: #17650 (-615)
5K → 10K
25:38 | 8:15/mi
15K· 9.32 mi
1:16:45
Rank: #18003 (-353)
10K → 15K
26:06 | 8:24/mi
20K· 12.43 mi
1:43:44
Rank: #18296 (-293)
15K → 20K
26:59 | 8:41/mi
Half· 13.11 mi
1:49:37
Rank: #18385 (-89)
20K → Half
5:53 | 8:37/mi
25K· 15.53 mi
2:11:05
Rank: #18526 (-141)
Half → 25K
21:28 | 8:51/mi
30K· 18.64 mi
2:40:01
Rank: #18666 (-140)
25K → 30K
28:56 | 9:19/mi
20M
2:52:57
Rank: #18706 (-40)
30K → 20M
12:56 | 9:31/mi
21M
3:03:09
Rank: #18741 (-35)
20M → 21M
10:12 | 10:12/mi
35K· 21.75 mi
3:09:57
Rank: #18732 (+9)
21M → 35K
6:48 | 9:05/mi
23M
3:21:32
Rank: #18657 (+75)
35K → 23M
11:35 | 9:15/mi
24M
3:30:37
Rank: #18617 (+40)
23M → 24M
9:05 | 9:05/mi
40K· 24.85 mi
3:38:41
Rank: #18606 (+11)
24M → 40K
8:04 | 9:26/mi
25.2M
3:42:16
Rank: #18607 (-1)
40K → 25.2M
3:35 | 10:23/mi
Finish· 26.22 mi
3:51:06
Rank: #18569 (+38)
25.2M → Finish
8:50 | 8:40/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:49:37
Pace8:22 /mi
2nd Half
Distance13.11 mi
Time2:01:29
Pace9:16 /mi
📊Positive Split: 10.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:1125:018:0325:01
8:03
-
10K
6.21 mi11:42:4950:398:0925:38
8:15
+0:12
15K
9.32 mi12:08:551:16:458:1426:06
8:24
+0:09
20K
12.43 mi12:35:541:43:448:2126:59
8:41
+0:17
Half
13.11 mi12:41:471:49:378:225:53
8:37
-0:04
25K
15.53 mi13:03:152:11:058:2621:28
8:51
+0:14
30K
18.64 mi13:32:112:40:018:3528:56
9:19
+0:28
20M
20.00 mi13:45:072:52:578:3912:56
9:31
+0:12
21M
21.00 mi13:55:193:03:098:4310:12
10:12
+0:41
35K
21.75 mi14:02:073:09:578:446:48
9:05
-1:07
23M
23.00 mi14:13:423:21:328:4611:35
9:15
+0:10
24M
24.00 mi14:22:473:30:378:479:05
9:05
-0:10
40K
24.85 mi14:30:513:38:418:488:04
9:26
+0:21
25.2M
25.20 mi14:34:263:42:168:493:35
10:23
+0:57
Finish
26.22 mi14:43:163:51:068:498:50
8:40
-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

8:03 /mi

Average Pace

8:49 /mi

Slowest Pace

10:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:58:27

51% of race

Time at Steady Pace

1:17:52

34% of race

Time at Slower Pace

34:47

15% of race

Average Pace: 8:49 /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 mi11:17:1125:018:0325:01
8:03
#17035
10K
6.21 mi11:42:4950:398:0925:38
8:15
#17650
15K
9.32 mi12:08:551:16:458:1426:06
8:24
#18003
20K
12.43 mi12:35:541:43:448:2126:59
8:41
#18296
Half
13.11 mi12:41:471:49:378:225:53
8:37
#18385
25K
15.53 mi13:03:152:11:058:2621:28
8:51
#18526
30K
18.64 mi13:32:112:40:018:3528:56
9:19
#18666
20M
20.00 mi13:45:072:52:578:3912:56
9:31
#18706
21M
21.00 mi13:55:193:03:098:4310:12
10:12
#18741
35K
21.75 mi14:02:073:09:578:446:48
9:05
#18732
23M
23.00 mi14:13:423:21:328:4611:35
9:15
#18657
24M
24.00 mi14:22:473:30:378:479:05
9:05
#18617
40K
24.85 mi14:30:513:38:418:488:04
9:26
#18606
25.2M
25.20 mi14:34:263:42:168:493:35
10:23
#18607
Finish
26.22 mi14:43:163:51:068:498:50
8:40
#18569
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi170355759575918726(Top 66%)6739(Top 55%)6739(Top 392%)
10K6.21 mi3.10 mi17650-6156122-3636122-36318238(Top 64%)6448(Top 53%)6448(Top 375%)
15K9.32 mi3.11 mi18003-3536336-2146336-21418726(Top 66%)6739(Top 55%)6739(Top 392%)
20K12.43 mi3.11 mi18296-2936509-1736509-17319348(Top 68%)7106(Top 58%)7106(Top 414%)
Half13.11 mi0.68 mi18385-896559-506559-5019946(Top 70%)7434(Top 61%)7434(Top 433%)
25K15.53 mi2.42 mi18526-1416655-966655-9619221(Top 68%)7093(Top 58%)7093(Top 413%)
30K18.64 mi3.11 mi18666-1406755-1006755-10019174(Top 68%)7212(Top 59%)7212(Top 420%)
20M20.00 mi1.36 mi18706-406806-516806-5119262(Top 68%)7402(Top 61%)7402(Top 431%)
21M21.00 mi1.00 mi18741-356858-526858-5219030(Top 67%)7342(Top 60%)7342(Top 427%)
35K21.75 mi0.75 mi18732+96868-106868-1018682(Top 66%)7290(Top 60%)7290(Top 424%)
23M23.00 mi1.25 mi18657+756857+116857+1117578(Top 62%)6775(Top 55%)6775(Top 394%)
24M24.00 mi1.00 mi18617+406856+16856+117815(Top 63%)6935(Top 57%)6935(Top 404%)
40K24.85 mi0.85 mi18606+116882-266882-2618448(Top 65%)7356(Top 60%)7356(Top 428%)
25.2M25.20 mi0.35 mi18607-16895-136895-1318640(Top 66%)7451(Top 61%)7451(Top 434%)
Finish26.22 mi1.02 mi18569+386886+96886+917315(Top 61%)6718(Top 55%)6718(Top 391%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 66%
×21stories
+97ft-345ft

Overall

18726

Females

6739

F40-44

6739

5K→10K

3.1 - 6.2 mi

Top 64%
×5stories
+79ft-138ft

Overall

18238

Females

6448

F40-44

6448

10K→15K

6.2 - 9.3 mi

Top 66%
×3stories
+67ft-78ft

Overall

18726

Females

6739

F40-44

6739

15K→20K

9.3 - 12.4 mi

Top 68%
×5stories
+106ft-86ft

Overall

19348

Females

7106

F40-44

7106

20K→Half

12.4 - 13.1 mi

Top 70%
×2stories
+19ft-37ft

Overall

19946

Females

7434

F40-44

7434

Half→25K

13.1 - 15.5 mi

Top 68%
×4stories
+66ft-88ft

Overall

19221

Females

7093

F40-44

7093

25K→30K

15.5 - 18.6 mi

Top 68%
×9stories
+181ft-148ft

Overall

19174

Females

7212

F40-44

7212

30K→20M

18.6 - 20.0 mi

Top 68%
×5stories
+64ft-50ft

Overall

19262

Females

7402

F40-44

7402

20M→21M

20.0 - 21.0 mi

Top 67%
×8stories
+106ft-24ft

Overall

19030

Females

7342

F40-44

7342

21M→35K

21.0 - 21.8 mi

Top 66%
×7stories
+17ft-86ft

Overall

18682

Females

7290

F40-44

7290

35K→23M

21.8 - 23.0 mi

Top 62%
×5stories
+23ft-63ft

Overall

17578

Females

6775

F40-44

6775

23M→24M

23.0 - 24.0 mi

Top 63%
×6stories
+12ft-82ft

Overall

17815

Females

6935

F40-44

6935

24M→40K

24.0 - 24.9 mi

Top 65%
×1story
+6ft-20ft

Overall

18448

Females

7356

F40-44

7356

40K→25.2M

24.9 - 25.2 mi

Top 66%
×1story
+13ft-16ft

Overall

18640

Females

7451

F40-44

7451

25.2M→Finish

25.2 - 26.2 mi

Top 61%
×2stories
+22ft-21ft

Overall

17315

Females

6718

F40-44

6718

Passing Analysis

Category:
Athletes Passed
1311
Passed By
2845
Net Change
-1534
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17035
5K → 10K106721-615#17035#17650
10K → 15K91444-353#17650#18003
15K → 20K113406-293#18003#18296
20K → Half13102-89#18296#18385
Half → 25K127268-141#18385#18526
25K → 30K202342-140#18526#18666
30K → 20M93133-40#18666#18706
20M → 21M93128-35#18706#18741
21M → 35K5647+9#18741#18732
35K → 23M14368+75#18732#18657
23M → 24M7737+40#18657#18617
24M → 40K8675+11#18617#18606
40K → 25.2M2930-1#18606#18607
25.2M → Finish8244+38#18607#18569
TOTALS13112845-1534
📊

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