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BOSTON MARATHON 2025

Song Yan Fu

Bib: 7048•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 15%
Gender (Male)
#0 / 16105
Top 24%
Masters (Masters Men)
#0 / 10463
Top 10%
Division (M40-44)
#0 / 2247
Top 28%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:27
Rank: #4435
Start → 5K
20:27 | 6:35/mi
10K· 6.21 mi
41:12
Rank: #4738 (-303)
5K → 10K
20:45 | 6:41/mi
15K· 9.32 mi
1:01:57
Rank: #4769 (-31)
10K → 15K
20:45 | 6:41/mi
20K· 12.43 mi
1:22:51
Rank: #4703 (+66)
15K → 20K
20:54 | 6:44/mi
Half· 13.11 mi
1:27:29
Rank: #4758 (-55)
20K → Half
4:38 | 6:47/mi
25K· 15.53 mi
1:43:49
Rank: #4649 (+109)
Half → 25K
16:20 | 6:44/mi
30K· 18.64 mi
2:05:15
Rank: #4470 (+179)
25K → 30K
21:26 | 6:54/mi
20M
2:14:40
Rank: #4364 (+106)
30K → 20M
9:25 | 6:56/mi
21M
2:22:05
Rank: #4318 (+46)
20M → 21M
7:25 | 7:25/mi
35K· 21.75 mi
2:27:01
Rank: #4242 (+76)
21M → 35K
4:56 | 6:36/mi
23M
2:35:55
Rank: #4222 (+20)
35K → 23M
8:54 | 7:06/mi
24M
2:42:54
Rank: #4206 (+16)
23M → 24M
6:59 | 6:59/mi
40K· 24.85 mi
2:49:01
Rank: #4221 (-15)
24M → 40K
6:07 | 7:09/mi
25.2M
2:51:44
Rank: #4235 (-14)
40K → 25.2M
2:43 | 7:53/mi
Finish· 26.22 mi
2:58:30
Rank: #4176 (+59)
25.2M → Finish
6:46 | 6:38/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:27:29
Pace6:40 /mi
2nd Half
Distance13.11 mi
Time1:31:01
Pace6:57 /mi
📊Positive Split: 4.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:27:4020:276:3520:27
6:35
-
10K
6.21 mi10:48:2541:126:3820:45
6:41
+0:06
15K
9.32 mi11:09:101:01:576:3920:45
6:41
0:00
20K
12.43 mi11:30:041:22:516:4020:54
6:44
+0:03
Half
13.11 mi11:34:421:27:296:404:38
6:47
+0:03
25K
15.53 mi11:51:021:43:496:4116:20
6:44
-0:03
30K
18.64 mi12:12:282:05:156:4321:26
6:54
+0:10
20M
20.00 mi12:21:532:14:406:449:25
6:56
+0:02
21M
21.00 mi12:29:182:22:056:467:25
7:25
+0:29
35K
21.75 mi12:34:142:27:016:464:56
6:36
-0:49
23M
23.00 mi12:43:082:35:556:478:54
7:06
+0:30
24M
24.00 mi12:50:072:42:546:476:59
6:59
-0:07
40K
24.85 mi12:56:142:49:016:486:07
7:09
+0:10
25.2M
25.20 mi12:58:572:51:446:492:43
7:53
+0:44
Finish
26.22 mi13:05:432:58:306:496:46
6:38
-1:15

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

6:35 /mi

Average Pace

6:49 /mi

Slowest Pace

7:53 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:48:22

94% of race

Time at Steady Pace

7:25

4% of race

Time at Slower Pace

2:43

2% of race

Average Pace: 6:48 /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 mi10:27:4020:276:3520:27
6:35
#4435
10K
6.21 mi10:48:2541:126:3820:45
6:41
#4738
15K
9.32 mi11:09:101:01:576:3920:45
6:41
#4769
20K
12.43 mi11:30:041:22:516:4020:54
6:44
#4703
Half
13.11 mi11:34:421:27:296:404:38
6:47
#4758
25K
15.53 mi11:51:021:43:496:4116:20
6:44
#4649
30K
18.64 mi12:12:282:05:156:4321:26
6:54
#4470
20M
20.00 mi12:21:532:14:406:449:25
6:56
#4364
21M
21.00 mi12:29:182:22:056:467:25
7:25
#4318
35K
21.75 mi12:34:142:27:016:464:56
6:36
#4242
23M
23.00 mi12:43:082:35:556:478:54
7:06
#4222
24M
24.00 mi12:50:072:42:546:476:59
6:59
#4206
40K
24.85 mi12:56:142:49:016:486:07
7:09
#4221
25.2M
25.20 mi12:58:572:51:446:492:43
7:53
#4235
Finish
26.22 mi13:05:432:58:306:496:46
6:38
#4176
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi4435417141714868(Top 17%)4539(Top 28%)4539(Top 202%)
10K6.21 mi3.10 mi4738-3034435-2644435-2645134(Top 18%)4777(Top 30%)4777(Top 213%)
15K9.32 mi3.11 mi4769-314460-254460-254868(Top 17%)4539(Top 28%)4539(Top 202%)
20K12.43 mi3.11 mi4703+664391+694391+694655(Top 16%)4317(Top 27%)4317(Top 192%)
Half13.11 mi0.68 mi4758-554438-474438-475973(Top 21%)5394(Top 33%)5394(Top 240%)
25K15.53 mi2.42 mi4649+1094335+1034335+1034374(Top 15%)4052(Top 25%)4052(Top 180%)
30K18.64 mi3.11 mi4470+1794173+1624173+1624062(Top 14%)3738(Top 23%)3738(Top 166%)
20M20.00 mi1.36 mi4364+1064072+1014072+1013680(Top 13%)3386(Top 21%)3386(Top 151%)
21M21.00 mi1.00 mi4318+464018+544018+544174(Top 15%)3753(Top 23%)3753(Top 167%)
35K21.75 mi0.75 mi4242+763946+723946+722924(Top 10%)2696(Top 17%)2696(Top 120%)
23M23.00 mi1.25 mi4222+203920+263920+264360(Top 15%)3848(Top 24%)3848(Top 171%)
24M24.00 mi1.00 mi4206+163894+263894+264512(Top 16%)3905(Top 24%)3905(Top 174%)
40K24.85 mi0.85 mi4221-153898-43898-44753(Top 17%)4031(Top 25%)4031(Top 179%)
25.2M25.20 mi0.35 mi4235-143907-93907-95214(Top 18%)4235(Top 26%)4235(Top 188%)
Finish26.22 mi1.02 mi4176+593847+603847+603545(Top 12%)3092(Top 19%)3092(Top 138%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 17%
×21stories
+97ft-345ft

Overall

4868

Males

4539

M40-44

4539

5K→10K

3.1 - 6.2 mi

Top 18%
×5stories
+79ft-138ft

Overall

5134

Males

4777

M40-44

4777

10K→15K

6.2 - 9.3 mi

Top 17%
×3stories
+67ft-78ft

Overall

4868

Males

4539

M40-44

4539

15K→20K

9.3 - 12.4 mi

Top 16%
×5stories
+106ft-86ft

Overall

4655

Males

4317

M40-44

4317

20K→Half

12.4 - 13.1 mi

Top 21%
×2stories
+19ft-37ft

Overall

5973

Males

5394

M40-44

5394

Half→25K

13.1 - 15.5 mi

Top 15%
×4stories
+66ft-88ft

Overall

4374

Males

4052

M40-44

4052

25K→30K

15.5 - 18.6 mi

Top 14%
×9stories
+181ft-148ft

Overall

4062

Males

3738

M40-44

3738

30K→20M

18.6 - 20.0 mi

Top 13%
×5stories
+64ft-50ft

Overall

3680

Males

3386

M40-44

3386

20M→21M

20.0 - 21.0 mi

Top 15%
×8stories
+106ft-24ft

Overall

4174

Males

3753

M40-44

3753

21M→35K

21.0 - 21.8 mi

Top 10%
×7stories
+17ft-86ft

Overall

2924

Males

2696

M40-44

2696

35K→23M

21.8 - 23.0 mi

Top 15%
×5stories
+23ft-63ft

Overall

4360

Males

3848

M40-44

3848

23M→24M

23.0 - 24.0 mi

Top 16%
×6stories
+12ft-82ft

Overall

4512

Males

3905

M40-44

3905

24M→40K

24.0 - 24.9 mi

Top 17%
×1story
+6ft-20ft

Overall

4753

Males

4031

M40-44

4031

40K→25.2M

24.9 - 25.2 mi

Top 18%
×1story
+13ft-16ft

Overall

5214

Males

4235

M40-44

4235

25.2M→Finish

25.2 - 26.2 mi

Top 12%
×2stories
+22ft-21ft

Overall

3545

Males

3092

M40-44

3092

Passing Analysis

Category:
Athletes Passed
1307
Passed By
1048
Net Change
+259
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4435
5K → 10K62365-303#4435#4738
10K → 15K103134-31#4738#4769
15K → 20K15387+66#4769#4703
20K → Half964-55#4703#4758
Half → 25K15748+109#4758#4649
25K → 30K23354+179#4649#4470
30K → 20M13125+106#4470#4364
20M → 21M9246+46#4364#4318
21M → 35K8913+76#4318#4242
35K → 23M8262+20#4242#4222
23M → 24M5943+16#4222#4206
24M → 40K3954-15#4206#4221
40K → 25.2M1933-14#4221#4235
25.2M → Finish7920+59#4235#4176
TOTALS13071048+259
📊

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