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BOSTON MARATHON 2025

Guorong Zhu

Bib: 29552•F

MA

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

Start
0:00:00
Race begins
5K· 3.11 mi
31:10
Rank: #25657
Start → 5K
31:10 | 10:02/mi
10K· 6.21 mi
1:00:46
Rank: #24927 (+730)
5K → 10K
29:36 | 9:32/mi
15K· 9.32 mi
1:30:12
Rank: #24527 (+400)
10K → 15K
29:26 | 9:28/mi
20K· 12.43 mi
2:00:04
Rank: #24199 (+328)
15K → 20K
29:52 | 9:37/mi
Half· 13.11 mi
2:06:29
Rank: #24153 (+46)
20K → Half
6:25 | 9:24/mi
25K· 15.53 mi
2:30:18
Rank: #23918 (+235)
Half → 25K
23:49 | 9:49/mi
30K· 18.64 mi
3:02:35
Rank: #23654 (+264)
25K → 30K
32:17 | 10:23/mi
20M
3:16:41
Rank: #23531 (+123)
30K → 20M
14:06 | 10:23/mi
21M
3:28:24
Rank: #23511 (+20)
20M → 21M
11:43 | 11:43/mi
35K· 21.75 mi
3:36:17
Rank: #23480 (+31)
21M → 35K
7:53 | 10:32/mi
23M
3:49:50
Rank: #23452 (+28)
35K → 23M
13:33 | 10:49/mi
24M
4:00:08
Rank: #23405 (+47)
23M → 24M
10:18 | 10:18/mi
40K· 24.85 mi
4:08:58
Rank: #23294 (+111)
24M → 40K
8:50 | 10:20/mi
25.2M
4:12:47
Rank: #23269 (+25)
40K → 25.2M
3:49 | 11:04/mi
Finish· 26.22 mi
4:22:49
Rank: #23248 (+21)
25.2M → Finish
10:02 | 9:51/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:06:29
Pace9:39 /mi
2nd Half
Distance13.11 mi
Time2:16:20
Pace10:24 /mi
📊Positive Split: 7.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:50:2031:1010:0231:10
10:02
-
10K
6.21 mi12:19:561:00:469:4729:36
9:32
-0:30
15K
9.32 mi12:49:221:30:129:4129:26
9:28
-0:04
20K
12.43 mi13:19:142:00:049:4029:52
9:37
+0:09
Half
13.11 mi13:25:392:06:299:396:25
9:24
-0:13
25K
15.53 mi13:49:282:30:189:4123:49
9:49
+0:25
30K
18.64 mi14:21:453:02:359:4832:17
10:23
+0:34
20M
20.00 mi14:35:513:16:419:5014:06
10:23
0:00
21M
21.00 mi14:47:343:28:249:5511:43
11:43
+1:20
35K
21.75 mi14:55:273:36:179:577:53
10:32
-1:11
23M
23.00 mi15:09:003:49:5010:0013:33
10:49
+0:17
24M
24.00 mi15:19:184:00:0810:0010:18
10:18
-0:31
40K
24.85 mi15:28:084:08:5810:018:50
10:20
+0:02
25.2M
25.20 mi15:31:574:12:4710:023:49
11:04
+0:44
Finish
26.22 mi15:41:594:22:4910:0210:02
9:51
-1:13

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

9:24 /mi

Average Pace

10:02 /mi

Slowest Pace

11:43 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:09:10

49% of race

Time at Steady Pace

1:44:34

40% of race

Time at Slower Pace

29:05

11% of race

Average Pace: 10:01 /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 mi11:50:2031:1010:0231:10
10:02
#25657
10K
6.21 mi12:19:561:00:469:4729:36
9:32
#24927
15K
9.32 mi12:49:221:30:129:4129:26
9:28
#24527
20K
12.43 mi13:19:142:00:049:4029:52
9:37
#24199
Half
13.11 mi13:25:392:06:299:396:25
9:24
#24153
25K
15.53 mi13:49:282:30:189:4123:49
9:49
#23918
30K
18.64 mi14:21:453:02:359:4832:17
10:23
#23654
20M
20.00 mi14:35:513:16:419:5014:06
10:23
#23531
21M
21.00 mi14:47:343:28:249:5511:43
11:43
#23511
35K
21.75 mi14:55:273:36:179:577:53
10:32
#23480
23M
23.00 mi15:09:003:49:5010:0013:33
10:49
#23452
24M
24.00 mi15:19:184:00:0810:0010:18
10:18
#23405
40K
24.85 mi15:28:084:08:5810:018:50
10:20
#23294
25.2M
25.20 mi15:31:574:12:4710:023:49
11:04
#23269
Finish
26.22 mi15:41:594:22:4910:0210:02
9:51
#23248
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi25657105611056123673(Top 83%)9473(Top 77%)9473(Top 727%)
10K6.21 mi3.10 mi24927+73010188+37310188+37324181(Top 85%)9791(Top 80%)9791(Top 751%)
15K9.32 mi3.11 mi24527+4009970+2189970+21823673(Top 83%)9473(Top 77%)9473(Top 727%)
20K12.43 mi3.11 mi24199+3289802+1689802+16823258(Top 82%)9280(Top 76%)9280(Top 712%)
Half13.11 mi0.68 mi24153+469780+229780+2223299(Top 82%)9316(Top 76%)9316(Top 715%)
25K15.53 mi2.42 mi23918+2359652+1289652+12822832(Top 80%)9110(Top 75%)9110(Top 699%)
30K18.64 mi3.11 mi23654+2649544+1089544+10822692(Top 80%)9156(Top 75%)9156(Top 703%)
20M20.00 mi1.36 mi23531+1239495+499495+4922102(Top 78%)8955(Top 73%)8955(Top 687%)
21M21.00 mi1.00 mi23511+209504-99504-923068(Top 81%)9532(Top 78%)9532(Top 732%)
35K21.75 mi0.75 mi23480+319503+19503+123263(Top 82%)9686(Top 79%)9686(Top 743%)
23M23.00 mi1.25 mi23452+289506-39506-322808(Top 80%)9501(Top 78%)9501(Top 729%)
24M24.00 mi1.00 mi23405+479491+159491+1522262(Top 78%)9269(Top 76%)9269(Top 711%)
40K24.85 mi0.85 mi23294+1119456+359456+3521497(Top 76%)8931(Top 73%)8931(Top 685%)
25.2M25.20 mi0.35 mi23269+259448+89448+820906(Top 74%)8620(Top 70%)8620(Top 662%)
Finish26.22 mi1.02 mi23248+219450-29450-222460(Top 79%)9403(Top 77%)9403(Top 722%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 83%
×21stories
+97ft-345ft

Overall

23673

Females

9473

F50-54

9473

5K→10K

3.1 - 6.2 mi

Top 85%
×5stories
+79ft-138ft

Overall

24181

Females

9791

F50-54

9791

10K→15K

6.2 - 9.3 mi

Top 83%
×3stories
+67ft-78ft

Overall

23673

Females

9473

F50-54

9473

15K→20K

9.3 - 12.4 mi

Top 82%
×5stories
+106ft-86ft

Overall

23258

Females

9280

F50-54

9280

20K→Half

12.4 - 13.1 mi

Top 82%
×2stories
+19ft-37ft

Overall

23299

Females

9316

F50-54

9316

Half→25K

13.1 - 15.5 mi

Top 80%
×4stories
+66ft-88ft

Overall

22832

Females

9110

F50-54

9110

25K→30K

15.5 - 18.6 mi

Top 80%
×9stories
+181ft-148ft

Overall

22692

Females

9156

F50-54

9156

30K→20M

18.6 - 20.0 mi

Top 78%
×5stories
+64ft-50ft

Overall

22102

Females

8955

F50-54

8955

20M→21M

20.0 - 21.0 mi

Top 81%
×8stories
+106ft-24ft

Overall

23068

Females

9532

F50-54

9532

21M→35K

21.0 - 21.8 mi

Top 82%
×7stories
+17ft-86ft

Overall

23263

Females

9686

F50-54

9686

35K→23M

21.8 - 23.0 mi

Top 80%
×5stories
+23ft-63ft

Overall

22808

Females

9501

F50-54

9501

23M→24M

23.0 - 24.0 mi

Top 78%
×6stories
+12ft-82ft

Overall

22262

Females

9269

F50-54

9269

24M→40K

24.0 - 24.9 mi

Top 76%
×1story
+6ft-20ft

Overall

21497

Females

8931

F50-54

8931

40K→25.2M

24.9 - 25.2 mi

Top 74%
×1story
+13ft-16ft

Overall

20906

Females

8620

F50-54

8620

25.2M→Finish

25.2 - 26.2 mi

Top 79%
×2stories
+22ft-21ft

Overall

22460

Females

9403

F50-54

9403

Passing Analysis

Category:
Athletes Passed
2741
Passed By
332
Net Change
+2409
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25657
5K → 10K74414+730#25657#24927
10K → 15K41111+400#24927#24527
15K → 20K34719+328#24527#24199
20K → Half537+46#24199#24153
Half → 25K26025+235#24153#23918
25K → 30K30137+264#23918#23654
30K → 20M14118+123#23654#23531
20M → 21M7959+20#23531#23511
21M → 35K6029+31#23511#23480
35K → 23M8759+28#23480#23452
23M → 24M6215+47#23452#23405
24M → 40K1176+111#23405#23294
40K → 25.2M294+25#23294#23269
25.2M → Finish5029+21#23269#23248
TOTALS2741332+2409
📊

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