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BOSTON MARATHON 2025

Jianwei Guo

Bib: 4286•M

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 7%
Gender (Male)
#0 / 16105
Top 12%
Division (M18-39)
#0 / 5642
Top 29%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:31
Rank: #2315
Start → 5K
19:31 | 6:17/mi
10K· 6.21 mi
39:05
Rank: #2336 (-21)
5K → 10K
19:34 | 6:18/mi
15K· 9.32 mi
58:39
Rank: #2328 (+8)
10K → 15K
19:34 | 6:18/mi
20K· 12.43 mi
1:18:27
Rank: #2319 (+9)
15K → 20K
19:48 | 6:22/mi
Half· 13.11 mi
1:22:41
Rank: #2299 (+20)
20K → Half
4:14 | 6:12/mi
25K· 15.53 mi
1:38:01
Rank: #2224 (+75)
Half → 25K
15:20 | 6:19/mi
30K· 18.64 mi
1:58:28
Rank: #2202 (+22)
25K → 30K
20:27 | 6:35/mi
20M
2:07:26
Rank: #2176 (+26)
30K → 20M
8:58 | 6:36/mi
21M
2:14:34
Rank: #2195 (-19)
20M → 21M
7:08 | 7:08/mi
35K· 21.75 mi
2:19:24
Rank: #2177 (+18)
21M → 35K
4:50 | 6:28/mi
23M
2:27:50
Rank: #2160 (+17)
35K → 23M
8:26 | 6:44/mi
24M
2:34:23
Rank: #2125 (+35)
23M → 24M
6:33 | 6:33/mi
40K· 24.85 mi
2:40:05
Rank: #2099 (+26)
24M → 40K
5:42 | 6:40/mi
25.2M
2:42:29
Rank: #2077 (+22)
40K → 25.2M
2:24 | 6:58/mi
Finish· 26.22 mi
2:48:57
Rank: #2069 (+8)
25.2M → Finish
6:28 | 6:21/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:22:41
Pace6:18 /mi
2nd Half
Distance13.11 mi
Time1:26:16
Pace6:35 /mi
📊Positive Split: 4.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:3319:316:1719:31
6:17
-
10K
6.21 mi10:42:0739:056:1719:34
6:18
+0:01
15K
9.32 mi11:01:4158:396:1819:34
6:18
0:00
20K
12.43 mi11:21:291:18:276:1919:48
6:22
+0:04
Half
13.11 mi11:25:431:22:416:184:14
6:12
-0:10
25K
15.53 mi11:41:031:38:016:1915:20
6:19
+0:07
30K
18.64 mi12:01:301:58:286:2120:27
6:35
+0:16
20M
20.00 mi12:10:282:07:266:228:58
6:36
+0:01
21M
21.00 mi12:17:362:14:346:247:08
7:08
+0:32
35K
21.75 mi12:22:262:19:246:254:50
6:28
-0:40
23M
23.00 mi12:30:522:27:506:268:26
6:44
+0:16
24M
24.00 mi12:37:252:34:236:266:33
6:33
-0:11
40K
24.85 mi12:43:072:40:056:265:42
6:40
+0:07
25.2M
25.20 mi12:45:312:42:296:272:24
6:58
+0:18
Finish
26.22 mi12:51:592:48:576:276:28
6:21
-0:37

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

6:12 /mi

Average Pace

6:27 /mi

Slowest Pace

7:08 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:39:25

94% of race

Time at Steady Pace

9:32

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:27 /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 mi10:22:3319:316:1719:31
6:17
#2315
10K
6.21 mi10:42:0739:056:1719:34
6:18
#2336
15K
9.32 mi11:01:4158:396:1819:34
6:18
#2328
20K
12.43 mi11:21:291:18:276:1919:48
6:22
#2319
Half
13.11 mi11:25:431:22:416:184:14
6:12
#2299
25K
15.53 mi11:41:031:38:016:1915:20
6:19
#2224
30K
18.64 mi12:01:301:58:286:2120:27
6:35
#2202
20M
20.00 mi12:10:282:07:266:228:58
6:36
#2176
21M
21.00 mi12:17:362:14:346:247:08
7:08
#2195
35K
21.75 mi12:22:262:19:246:254:50
6:28
#2177
23M
23.00 mi12:30:522:27:506:268:26
6:44
#2160
24M
24.00 mi12:37:252:34:236:266:33
6:33
#2125
40K
24.85 mi12:43:072:40:056:265:42
6:40
#2099
25.2M
25.20 mi12:45:312:42:296:272:24
6:58
#2077
Finish
26.22 mi12:51:592:48:576:276:28
6:21
#2069
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi2315220922092318(Top 8%)2211(Top 14%)2211(Top 39%)
10K6.21 mi3.10 mi2336-212227-182227-182403(Top 8%)2298(Top 14%)2298(Top 41%)
15K9.32 mi3.11 mi2328+82223+42223+42318(Top 8%)2211(Top 14%)2211(Top 39%)
20K12.43 mi3.11 mi2319+92213+102213+102374(Top 8%)2264(Top 14%)2264(Top 40%)
Half13.11 mi0.68 mi2299+202194+192194+191983(Top 7%)1892(Top 12%)1892(Top 34%)
25K15.53 mi2.42 mi2224+752123+712123+711976(Top 7%)1880(Top 12%)1880(Top 33%)
30K18.64 mi3.11 mi2202+222099+242099+242328(Top 8%)2206(Top 14%)2206(Top 39%)
20M20.00 mi1.36 mi2176+262074+252074+252003(Top 7%)1893(Top 12%)1893(Top 34%)
21M21.00 mi1.00 mi2195-192093-192093-192806(Top 10%)2600(Top 16%)2600(Top 46%)
35K21.75 mi0.75 mi2177+182076+172076+172248(Top 8%)2100(Top 13%)2100(Top 37%)
23M23.00 mi1.25 mi2160+172056+202056+202394(Top 8%)2221(Top 14%)2221(Top 39%)
24M24.00 mi1.00 mi2125+352020+362020+362235(Top 8%)2067(Top 13%)2067(Top 37%)
40K24.85 mi0.85 mi2099+261993+271993+272217(Top 8%)2032(Top 13%)2032(Top 36%)
25.2M25.20 mi0.35 mi2077+221971+221971+221358(Top 5%)1245(Top 8%)1245(Top 22%)
Finish26.22 mi1.02 mi2069+81962+91962+92062(Top 7%)1889(Top 12%)1889(Top 33%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 8%
×21stories
+97ft-345ft

Overall

2318

Males

2211

M18-39

2211

5K→10K

3.1 - 6.2 mi

Top 8%
×5stories
+79ft-138ft

Overall

2403

Males

2298

M18-39

2298

10K→15K

6.2 - 9.3 mi

Top 8%
×3stories
+67ft-78ft

Overall

2318

Males

2211

M18-39

2211

15K→20K

9.3 - 12.4 mi

Top 8%
×5stories
+106ft-86ft

Overall

2374

Males

2264

M18-39

2264

20K→Half

12.4 - 13.1 mi

Top 7%
×2stories
+19ft-37ft

Overall

1983

Males

1892

M18-39

1892

Half→25K

13.1 - 15.5 mi

Top 7%
×4stories
+66ft-88ft

Overall

1976

Males

1880

M18-39

1880

25K→30K

15.5 - 18.6 mi

Top 8%
×9stories
+181ft-148ft

Overall

2328

Males

2206

M18-39

2206

30K→20M

18.6 - 20.0 mi

Top 7%
×5stories
+64ft-50ft

Overall

2003

Males

1893

M18-39

1893

20M→21M

20.0 - 21.0 mi

Top 10%
×8stories
+106ft-24ft

Overall

2806

Males

2600

M18-39

2600

21M→35K

21.0 - 21.8 mi

Top 8%
×7stories
+17ft-86ft

Overall

2248

Males

2100

M18-39

2100

35K→23M

21.8 - 23.0 mi

Top 8%
×5stories
+23ft-63ft

Overall

2394

Males

2221

M18-39

2221

23M→24M

23.0 - 24.0 mi

Top 8%
×6stories
+12ft-82ft

Overall

2235

Males

2067

M18-39

2067

24M→40K

24.0 - 24.9 mi

Top 8%
×1story
+6ft-20ft

Overall

2217

Males

2032

M18-39

2032

40K→25.2M

24.9 - 25.2 mi

Top 5%
×1story
+13ft-16ft

Overall

1358

Males

1245

M18-39

1245

25.2M→Finish

25.2 - 26.2 mi

Top 7%
×2stories
+22ft-21ft

Overall

2062

Males

1889

M18-39

1889

Passing Analysis

Category:
Athletes Passed
781
Passed By
535
Net Change
+246
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2315
5K → 10K94115-21#2315#2336
10K → 15K8476+8#2336#2328
15K → 20K7465+9#2328#2319
20K → Half255+20#2319#2299
Half → 25K9419+75#2299#2224
25K → 30K9068+22#2224#2202
30K → 20M5327+26#2202#2176
20M → 21M3453-19#2176#2195
21M → 35K3113+18#2195#2177
35K → 23M4427+17#2177#2160
23M → 24M5217+35#2160#2125
24M → 40K4620+26#2125#2099
40K → 25.2M275+22#2099#2077
25.2M → Finish3325+8#2077#2069
TOTALS781535+246
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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