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BOSTON MARATHON 2025

Shuang Cheng

Bib: 18299•F

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 36%
Gender (Female)
#0 / 12228
Top 19%
Division (F18-39)
#0 / 5469
Top 33%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:10
Rank: #11862
Start → 5K
23:10 | 7:27/mi
10K· 6.21 mi
46:06
Rank: #11414 (+448)
5K → 10K
22:56 | 7:23/mi
15K· 9.32 mi
1:09:17
Rank: #11393 (+21)
10K → 15K
23:11 | 7:28/mi
20K· 12.43 mi
1:32:43
Rank: #11323 (+70)
15K → 20K
23:26 | 7:33/mi
Half· 13.11 mi
1:38:15
Rank: #11594 (-271)
20K → Half
5:32 | 8:07/mi
25K· 15.53 mi
1:56:41
Rank: #11436 (+158)
Half → 25K
18:26 | 7:36/mi
30K· 18.64 mi
2:20:56
Rank: #11117 (+319)
25K → 30K
24:15 | 7:48/mi
20M
2:31:42
Rank: #10962 (+155)
30K → 20M
10:46 | 7:55/mi
21M
2:40:01
Rank: #10839 (+123)
20M → 21M
8:19 | 8:19/mi
35K· 21.75 mi
2:45:38
Rank: #10741 (+98)
21M → 35K
5:37 | 7:30/mi
23M
2:55:27
Rank: #10584 (+157)
35K → 23M
9:49 | 7:50/mi
24M
3:03:00
Rank: #10437 (+147)
23M → 24M
7:33 | 7:33/mi
40K· 24.85 mi
3:09:39
Rank: #10319 (+118)
24M → 40K
6:39 | 7:47/mi
25.2M
3:12:37
Rank: #10304 (+15)
40K → 25.2M
2:58 | 8:36/mi
Finish· 26.22 mi
3:20:07
Rank: #10186 (+118)
25.2M → Finish
7:30 | 7:22/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:15
Pace7:30 /mi
2nd Half
Distance13.11 mi
Time1:41:52
Pace7:46 /mi
📊Positive Split: 3.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:0023:107:2723:10
7:27
-
10K
6.21 mi11:37:5646:067:2522:56
7:23
-0:04
15K
9.32 mi12:01:071:09:177:2623:11
7:28
+0:05
20K
12.43 mi12:24:331:32:437:2823:26
7:33
+0:05
Half
13.11 mi12:30:051:38:157:305:32
8:07
+0:34
25K
15.53 mi12:48:311:56:417:3118:26
7:36
-0:31
30K
18.64 mi13:12:462:20:567:3424:15
7:48
+0:12
20M
20.00 mi13:23:322:31:427:3510:46
7:55
+0:07
21M
21.00 mi13:31:512:40:017:378:19
8:19
+0:24
35K
21.75 mi13:37:282:45:387:375:37
7:30
-0:49
23M
23.00 mi13:47:172:55:277:389:49
7:50
+0:20
24M
24.00 mi13:54:503:03:007:387:33
7:33
-0:17
40K
24.85 mi14:01:293:09:397:386:39
7:47
+0:14
25.2M
25.20 mi14:04:273:12:377:392:58
8:36
+0:49
Finish
26.22 mi14:11:573:20:077:387:30
7:22
-1:14

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

7:22 /mi

Average Pace

7:38 /mi

Slowest Pace

8:36 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:03:18

92% of race

Time at Steady Pace

16:49

8% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:38 /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 mi11:15:0023:107:2723:10
7:27
#11862
10K
6.21 mi11:37:5646:067:2522:56
7:23
#11414
15K
9.32 mi12:01:071:09:177:2623:11
7:28
#11393
20K
12.43 mi12:24:331:32:437:2823:26
7:33
#11323
Half
13.11 mi12:30:051:38:157:305:32
8:07
#11594
25K
15.53 mi12:48:311:56:417:3118:26
7:36
#11436
30K
18.64 mi13:12:462:20:567:3424:15
7:48
#11117
20M
20.00 mi13:23:322:31:427:3510:46
7:55
#10962
21M
21.00 mi13:31:512:40:017:378:19
8:19
#10839
35K
21.75 mi13:37:282:45:387:375:37
7:30
#10741
23M
23.00 mi13:47:172:55:277:389:49
7:50
#10584
24M
24.00 mi13:54:503:03:007:387:33
7:33
#10437
40K
24.85 mi14:01:293:09:397:386:39
7:47
#10319
25.2M
25.20 mi14:04:273:12:377:392:58
8:36
#10304
Finish
26.22 mi14:11:573:20:077:387:30
7:22
#10186
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi118622717271711454(Top 40%)2608(Top 21%)2608(Top 48%)
10K6.21 mi3.10 mi11414+4482507+2102507+21011032(Top 39%)2319(Top 19%)2319(Top 42%)
15K9.32 mi3.11 mi11393+212524-172524-1711454(Top 40%)2608(Top 21%)2608(Top 48%)
20K12.43 mi3.11 mi11323+702513+112513+1111114(Top 39%)2533(Top 21%)2533(Top 46%)
Half13.11 mi0.68 mi11594-2712658-1452658-14516681(Top 59%)5556(Top 45%)5556(Top 102%)
25K15.53 mi2.42 mi11436+1582614+442614+4410793(Top 38%)2480(Top 20%)2480(Top 45%)
30K18.64 mi3.11 mi11117+3192526+882526+889995(Top 35%)2281(Top 19%)2281(Top 42%)
20M20.00 mi1.36 mi10962+1552490+362490+369946(Top 35%)2407(Top 20%)2407(Top 44%)
21M21.00 mi1.00 mi10839+1232468+222468+229348(Top 33%)2307(Top 19%)2307(Top 42%)
35K21.75 mi0.75 mi10741+982433+352433+358730(Top 31%)2009(Top 16%)2009(Top 37%)
23M23.00 mi1.25 mi10584+1572391+422391+428897(Top 31%)2207(Top 18%)2207(Top 40%)
24M24.00 mi1.00 mi10437+1472352+392352+398086(Top 28%)1907(Top 16%)1907(Top 35%)
40K24.85 mi0.85 mi10319+1182334+182334+188641(Top 30%)2293(Top 19%)2293(Top 42%)
25.2M25.20 mi0.35 mi10304+152347-132347-139478(Top 33%)2755(Top 23%)2755(Top 50%)
Finish26.22 mi1.02 mi10186+1182314+332314+338233(Top 29%)2169(Top 18%)2169(Top 40%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 40%
×21stories
+97ft-345ft

Overall

11454

Females

2608

F18-39

2608

5K→10K

3.1 - 6.2 mi

Top 39%
×5stories
+79ft-138ft

Overall

11032

Females

2319

F18-39

2319

10K→15K

6.2 - 9.3 mi

Top 40%
×3stories
+67ft-78ft

Overall

11454

Females

2608

F18-39

2608

15K→20K

9.3 - 12.4 mi

Top 39%
×5stories
+106ft-86ft

Overall

11114

Females

2533

F18-39

2533

20K→Half

12.4 - 13.1 mi

Top 59%
×2stories
+19ft-37ft

Overall

16681

Females

5556

F18-39

5556

Half→25K

13.1 - 15.5 mi

Top 38%
×4stories
+66ft-88ft

Overall

10793

Females

2480

F18-39

2480

25K→30K

15.5 - 18.6 mi

Top 35%
×9stories
+181ft-148ft

Overall

9995

Females

2281

F18-39

2281

30K→20M

18.6 - 20.0 mi

Top 35%
×5stories
+64ft-50ft

Overall

9946

Females

2407

F18-39

2407

20M→21M

20.0 - 21.0 mi

Top 33%
×8stories
+106ft-24ft

Overall

9348

Females

2307

F18-39

2307

21M→35K

21.0 - 21.8 mi

Top 31%
×7stories
+17ft-86ft

Overall

8730

Females

2009

F18-39

2009

35K→23M

21.8 - 23.0 mi

Top 31%
×5stories
+23ft-63ft

Overall

8897

Females

2207

F18-39

2207

23M→24M

23.0 - 24.0 mi

Top 28%
×6stories
+12ft-82ft

Overall

8086

Females

1907

F18-39

1907

24M→40K

24.0 - 24.9 mi

Top 30%
×1story
+6ft-20ft

Overall

8641

Females

2293

F18-39

2293

40K→25.2M

24.9 - 25.2 mi

Top 33%
×1story
+13ft-16ft

Overall

9478

Females

2755

F18-39

2755

25.2M→Finish

25.2 - 26.2 mi

Top 29%
×2stories
+22ft-21ft

Overall

8233

Females

2169

F18-39

2169

Passing Analysis

Category:
Athletes Passed
2715
Passed By
1039
Net Change
+1676
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11862
5K → 10K54092+448#11862#11414
10K → 15K194173+21#11414#11393
15K → 20K214144+70#11393#11323
20K → Half4275-271#11323#11594
Half → 25K23375+158#11594#11436
25K → 30K39879+319#11436#11117
30K → 20M18732+155#11117#10962
20M → 21M16138+123#10962#10839
21M → 35K11113+98#10839#10741
35K → 23M18730+157#10741#10584
23M → 24M16619+147#10584#10437
24M → 40K13921+118#10437#10319
40K → 25.2M3924+15#10319#10304
25.2M → Finish14224+118#10304#10186
TOTALS27151039+1676
📊

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