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BOSTON MARATHON 2025

Fei Peng

Bib: 14181•M

ON

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 43%
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Top 46%
Division (M50-54)
#0 / 1996
Top 50%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:05
Rank: #14377
Start → 5K
7:45/mi
24:05 split
10K· 6.21 mi
48:05
Rank: #14218 (+159)
5K → 10K
7:43/mi
24:00 split
15K· 9.32 mi
1:12:00
Rank: #13968 (+250)
10K → 15K
7:42/mi
23:55 split
20K· 12.43 mi
1:36:07
Rank: #13654 (+314)
15K → 20K
7:46/mi
24:07 split
Half· 13.11 mi
1:41:23
Rank: #13655 (-1)
20K → Half
7:43/mi
5:16 split
25K· 15.53 mi
2:00:16
Rank: #13375 (+280)
Half → 25K
7:47/mi
18:53 split
30K· 18.64 mi
2:25:39
Rank: #13203 (+172)
25K → 30K
8:10/mi
25:23 split
20M
2:36:57
Rank: #13100 (+103)
30K → 20M
8:19/mi
11:18 split
21M
2:45:48
Rank: #13050 (+50)
20M → 21M
8:51/mi
8:51 split
35K· 21.75 mi
2:51:42
Rank: #12977 (+73)
21M → 35K
7:53/mi
5:54 split
23M
3:01:54
Rank: #12822 (+155)
35K → 23M
8:09/mi
10:12 split
24M
3:09:48
Rank: #12692 (+130)
23M → 24M
7:54/mi
7:54 split
40K· 24.85 mi
3:16:38
Rank: #12571 (+121)
24M → 40K
8:00/mi
6:50 split
25.2M
3:19:40
Rank: #12525 (+46)
40K → 25.2M
8:48/mi
3:02 split
Finish· 26.22 mi
3:27:11
Rank: #12327 (+198)
25.2M → Finish
7:23/mi
7:31 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:41:23
Pace7:44 /mi
2nd Half
Distance13.11 mi
Time1:45:48
Pace8:04 /mi
📊Positive Split: 4.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:55:4024:057:4524:05
7:45
-
10K
6.21 mi11:19:4048:057:4424:00
7:43
-0:02
15K
9.32 mi11:43:351:12:007:4323:55
7:42
-0:01
20K
12.43 mi12:07:421:36:077:4424:07
7:46
+0:04
Half
13.11 mi12:12:581:41:237:445:16
7:43
-0:03
25K
15.53 mi12:31:512:00:167:4518:53
7:47
+0:04
30K
18.64 mi12:57:142:25:397:4925:23
8:10
+0:23
20M
20.00 mi13:08:322:36:577:5111:18
8:19
+0:09
21M
21.00 mi13:17:232:45:487:548:51
8:51
+0:32
35K
21.75 mi13:23:172:51:427:545:54
7:53
-0:58
23M
23.00 mi13:33:293:01:547:5510:12
8:09
+0:16
24M
24.00 mi13:41:233:09:487:557:54
7:54
-0:15
40K
24.85 mi13:48:133:16:387:556:50
8:00
+0:06
25.2M
25.20 mi13:51:153:19:407:553:02
8:48
+0:48
Finish
26.22 mi13:58:463:27:117:547:31
7:23
-1:25

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

7:23 /mi

Average Pace

7:54 /mi

Slowest Pace

8:51 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:28:25

72% of race

Time at Steady Pace

46:53

23% of race

Time at Slower Pace

11:53

6% of race

Average Pace: 7:54 /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 mi10:55:4024:057:4524:05
7:45
#14377
10K
6.21 mi11:19:4048:057:4424:00
7:43
#14218
15K
9.32 mi11:43:351:12:007:4323:55
7:42
#13968
20K
12.43 mi12:07:421:36:077:4424:07
7:46
#13654
Half
13.11 mi12:12:581:41:237:445:16
7:43
#13655
25K
15.53 mi12:31:512:00:167:4518:53
7:47
#13375
30K
18.64 mi12:57:142:25:397:4925:23
8:10
#13203
20M
20.00 mi13:08:322:36:577:5111:18
8:19
#13100
21M
21.00 mi13:17:232:45:487:548:51
8:51
#13050
35K
21.75 mi13:23:172:51:427:545:54
7:53
#12977
23M
23.00 mi13:33:293:01:547:5510:12
8:09
#12822
24M
24.00 mi13:41:233:09:487:557:54
7:54
#12692
40K
24.85 mi13:48:133:16:387:556:50
8:00
#12571
25.2M
25.20 mi13:51:153:19:407:553:02
8:48
#12525
Finish
26.22 mi13:58:463:27:117:547:31
7:23
#12327
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi14377101861018613463(Top 47%)9703(Top 60%)9703(Top 486%)
10K6.21 mi3.10 mi14218+15910105+8110105+8114098(Top 50%)10041(Top 62%)10041(Top 503%)
15K9.32 mi3.11 mi13968+2509975+1309975+13013463(Top 47%)9703(Top 60%)9703(Top 486%)
20K12.43 mi3.11 mi13654+3149803+1729803+17212949(Top 46%)9394(Top 58%)9394(Top 471%)
Half13.11 mi0.68 mi13655-19796+79796+713483(Top 47%)9671(Top 60%)9671(Top 485%)
25K15.53 mi2.42 mi13375+2809639+1579639+15712234(Top 43%)8958(Top 56%)8958(Top 449%)
30K18.64 mi3.11 mi13203+1729495+1449495+14412584(Top 44%)8941(Top 56%)8941(Top 448%)
20M20.00 mi1.36 mi13100+1039428+679428+6712573(Top 44%)8805(Top 55%)8805(Top 441%)
21M21.00 mi1.00 mi13050+509379+499379+4912587(Top 44%)8635(Top 54%)8635(Top 433%)
35K21.75 mi0.75 mi12977+739332+479332+4711439(Top 40%)8073(Top 50%)8073(Top 404%)
23M23.00 mi1.25 mi12822+1559223+1099223+10911019(Top 39%)7764(Top 48%)7764(Top 389%)
24M24.00 mi1.00 mi12692+1309137+869137+8610535(Top 37%)7448(Top 46%)7448(Top 373%)
40K24.85 mi0.85 mi12571+1219048+899048+8910127(Top 36%)7118(Top 44%)7118(Top 357%)
25.2M25.20 mi0.35 mi12525+469006+429006+4210575(Top 37%)7267(Top 45%)7267(Top 364%)
Finish26.22 mi1.02 mi12327+1988873+1338873+1338332(Top 29%)6108(Top 38%)6108(Top 306%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 47%
×21story building
+97ft-345ft

Overall

13463

Males

9703

M50-54

9703

5K→10K

3.1 - 6.2 mi

Top 50%
×5story building
+79ft-138ft

Overall

14098

Males

10041

M50-54

10041

10K→15K

6.2 - 9.3 mi

Top 47%
×3story building
+67ft-78ft

Overall

13463

Males

9703

M50-54

9703

15K→20K

9.3 - 12.4 mi

Top 46%
×5story building
+106ft-86ft

Overall

12949

Males

9394

M50-54

9394

20K→Half

12.4 - 13.1 mi

Top 47%
×2story building
+19ft-37ft

Overall

13483

Males

9671

M50-54

9671

Half→25K

13.1 - 15.5 mi

Top 43%
×4story building
+66ft-88ft

Overall

12234

Males

8958

M50-54

8958

25K→30K

15.5 - 18.6 mi

Top 44%
×9story building
+181ft-148ft

Overall

12584

Males

8941

M50-54

8941

30K→20M

18.6 - 20.0 mi

Top 44%
×5story building
+64ft-50ft

Overall

12573

Males

8805

M50-54

8805

20M→21M

20.0 - 21.0 mi

Top 44%
×8story building
+106ft-24ft

Overall

12587

Males

8635

M50-54

8635

21M→35K

21.0 - 21.8 mi

Top 40%
×7story building
+17ft-86ft

Overall

11439

Males

8073

M50-54

8073

35K→23M

21.8 - 23.0 mi

Top 39%
×5story building
+23ft-63ft

Overall

11019

Males

7764

M50-54

7764

23M→24M

23.0 - 24.0 mi

Top 37%
×6story building
+12ft-82ft

Overall

10535

Males

7448

M50-54

7448

24M→40K

24.0 - 24.9 mi

Top 36%
×1story
+6ft-20ft

Overall

10127

Males

7118

M50-54

7118

40K→25.2M

24.9 - 25.2 mi

Top 37%
×1story
+13ft-16ft

Overall

10575

Males

7267

M50-54

7267

25.2M→Finish

25.2 - 26.2 mi

Top 29%
×2story building
+22ft-21ft

Overall

8332

Males

6108

M50-54

6108

Passing Analysis

Category:
Athletes Passed
2879
Passed By
829
Net Change
+2050
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14377
5K → 10K367208+159#14377#14218
10K → 15K33282+250#14218#13968
15K → 20K38066+314#13968#13654
20K → Half3637-1#13654#13655
Half → 25K31030+280#13655#13375
25K → 30K332160+172#13375#13203
30K → 20M15552+103#13203#13100
20M → 21M12979+50#13100#13050
21M → 35K9017+73#13050#12977
35K → 23M18833+155#12977#12822
23M → 24M14515+130#12822#12692
24M → 40K14524+121#12692#12571
40K → 25.2M5913+46#12571#12525
25.2M → Finish21113+198#12525#12327
TOTALS2879829+2050
📊

Passing Visuals

Category:
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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