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BOSTON MARATHON 2025

Fengfa An

Bib: 11612•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 45%
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Top 48%
Division (M50-54)
#0 / 1996
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:45
Rank: #10576
Start → 5K
22:45 | 7:19/mi
10K· 6.21 mi
45:47
Rank: #10931 (-355)
5K → 10K
23:02 | 7:25/mi
15K· 9.32 mi
1:09:13
Rank: #11307 (-376)
10K → 15K
23:26 | 7:33/mi
20K· 12.43 mi
1:33:06
Rank: #11565 (-258)
15K → 20K
23:53 | 7:41/mi
Half· 13.11 mi
1:38:13
Rank: #11562 (+3)
20K → Half
5:07 | 7:30/mi
25K· 15.53 mi
1:57:18
Rank: #11762 (-200)
Half → 25K
19:05 | 7:52/mi
30K· 18.64 mi
2:22:44
Rank: #11880 (-118)
25K → 30K
25:26 | 8:11/mi
20M
2:33:56
Rank: #11878 (+2)
30K → 20M
11:12 | 8:15/mi
21M
2:44:05
Rank: #12413 (-535)
20M → 21M
10:09 | 10:09/mi
35K· 21.75 mi
2:49:50
Rank: #12293 (+120)
21M → 35K
5:45 | 7:41/mi
23M
3:00:42
Rank: #12398 (-105)
35K → 23M
10:52 | 8:41/mi
24M
3:08:51
Rank: #12393 (+5)
23M → 24M
8:09 | 8:09/mi
40K· 24.85 mi
3:16:16
Rank: #12445 (-52)
24M → 40K
7:25 | 8:40/mi
25.2M
3:20:18
Rank: #12743 (-298)
40K → 25.2M
4:02 | 11:42/mi
Finish· 26.22 mi
3:28:34
Rank: #12775 (-32)
25.2M → Finish
8:16 | 8:07/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:13
Pace7:30 /mi
2nd Half
Distance13.11 mi
Time1:50:21
Pace8:25 /mi
📊Positive Split: 12.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:0222:457:1922:45
7:19
-
10K
6.21 mi11:14:0445:477:2223:02
7:25
+0:06
15K
9.32 mi11:37:301:09:137:2623:26
7:33
+0:08
20K
12.43 mi12:01:231:33:067:2923:53
7:41
+0:08
Half
13.11 mi12:06:301:38:137:305:07
7:30
-0:11
25K
15.53 mi12:25:351:57:187:3319:05
7:52
+0:22
30K
18.64 mi12:51:012:22:447:3925:26
8:11
+0:19
20M
20.00 mi13:02:132:33:567:4211:12
8:15
+0:04
21M
21.00 mi13:12:222:44:057:4910:09
10:09
+1:54
35K
21.75 mi13:18:072:49:507:495:45
7:41
-2:28
23M
23.00 mi13:28:593:00:427:5110:52
8:41
+1:00
24M
24.00 mi13:37:083:08:517:528:09
8:09
-0:32
40K
24.85 mi13:44:333:16:167:547:25
8:40
+0:31
25.2M
25.20 mi13:48:353:20:187:574:02
11:42
+3:02
Finish
26.22 mi13:56:513:28:347:588:16
8:07
-3:35

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

7:19 /mi

Average Pace

7:58 /mi

Slowest Pace

11:42 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:14:20

36% of race

Time at Steady Pace

1:49:11

52% of race

Time at Slower Pace

25:03

12% of race

Average Pace: 7:57 /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 mi10:51:0222:457:1922:45
7:19
#10576
10K
6.21 mi11:14:0445:477:2223:02
7:25
#10931
15K
9.32 mi11:37:301:09:137:2623:26
7:33
#11307
20K
12.43 mi12:01:231:33:067:2923:53
7:41
#11565
Half
13.11 mi12:06:301:38:137:305:07
7:30
#11562
25K
15.53 mi12:25:351:57:187:3319:05
7:52
#11762
30K
18.64 mi12:51:012:22:447:3925:26
8:11
#11880
20M
20.00 mi13:02:132:33:567:4211:12
8:15
#11878
21M
21.00 mi13:12:222:44:057:4910:09
10:09
#12413
35K
21.75 mi13:18:072:49:507:495:45
7:41
#12293
23M
23.00 mi13:28:593:00:427:5110:52
8:41
#12398
24M
24.00 mi13:37:083:08:517:528:09
8:09
#12393
40K
24.85 mi13:44:333:16:167:547:25
8:40
#12445
25.2M
25.20 mi13:48:353:20:187:574:02
11:42
#12743
Finish
26.22 mi13:56:513:28:347:588:16
8:07
#12775
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi105768482848212125(Top 43%)9120(Top 57%)9120(Top 457%)
10K6.21 mi3.10 mi10931-3558632-1508632-15011304(Top 40%)8806(Top 55%)8806(Top 441%)
15K9.32 mi3.11 mi11307-3768799-1678799-16712125(Top 43%)9120(Top 57%)9120(Top 457%)
20K12.43 mi3.11 mi11565-2588885-868885-8612277(Top 43%)9091(Top 56%)9091(Top 455%)
Half13.11 mi0.68 mi11562+38889-48889-411671(Top 41%)8881(Top 55%)8881(Top 445%)
25K15.53 mi2.42 mi11762-2008941-528941-5212901(Top 45%)9248(Top 57%)9248(Top 463%)
30K18.64 mi3.11 mi11880-1188916+258916+2512713(Top 45%)9009(Top 56%)9009(Top 451%)
20M20.00 mi1.36 mi11878+28884+328884+3212068(Top 42%)8558(Top 53%)8558(Top 429%)
21M21.00 mi1.00 mi12413-5359090-2069090-20618835(Top 66%)11527(Top 72%)11527(Top 578%)
35K21.75 mi0.75 mi12293+1209004+869004+869973(Top 35%)7373(Top 46%)7373(Top 369%)
23M23.00 mi1.25 mi12398-1059017-139017-1314395(Top 51%)9345(Top 58%)9345(Top 468%)
24M24.00 mi1.00 mi12393+58991+268991+2612227(Top 43%)8283(Top 51%)8283(Top 415%)
40K24.85 mi0.85 mi12445-528981+108981+1014441(Top 51%)9190(Top 57%)9190(Top 460%)
25.2M25.20 mi0.35 mi12743-2989114-1339114-13322508(Top 79%)13023(Top 81%)13023(Top 652%)
Finish26.22 mi1.02 mi12775-329104+109104+1013650(Top 48%)8839(Top 55%)8839(Top 443%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 43%
×21stories
+97ft-345ft

Overall

12125

Males

9120

M50-54

9120

5K→10K

3.1 - 6.2 mi

Top 40%
×5stories
+79ft-138ft

Overall

11304

Males

8806

M50-54

8806

10K→15K

6.2 - 9.3 mi

Top 43%
×3stories
+67ft-78ft

Overall

12125

Males

9120

M50-54

9120

15K→20K

9.3 - 12.4 mi

Top 43%
×5stories
+106ft-86ft

Overall

12277

Males

9091

M50-54

9091

20K→Half

12.4 - 13.1 mi

Top 41%
×2stories
+19ft-37ft

Overall

11671

Males

8881

M50-54

8881

Half→25K

13.1 - 15.5 mi

Top 45%
×4stories
+66ft-88ft

Overall

12901

Males

9248

M50-54

9248

25K→30K

15.5 - 18.6 mi

Top 45%
×9stories
+181ft-148ft

Overall

12713

Males

9009

M50-54

9009

30K→20M

18.6 - 20.0 mi

Top 42%
×5stories
+64ft-50ft

Overall

12068

Males

8558

M50-54

8558

20M→21M

20.0 - 21.0 mi

Top 66%
×8stories
+106ft-24ft

Overall

18835

Males

11527

M50-54

11527

21M→35K

21.0 - 21.8 mi

Top 35%
×7stories
+17ft-86ft

Overall

9973

Males

7373

M50-54

7373

35K→23M

21.8 - 23.0 mi

Top 51%
×5stories
+23ft-63ft

Overall

14395

Males

9345

M50-54

9345

23M→24M

23.0 - 24.0 mi

Top 43%
×6stories
+12ft-82ft

Overall

12227

Males

8283

M50-54

8283

24M→40K

24.0 - 24.9 mi

Top 51%
×1story
+6ft-20ft

Overall

14441

Males

9190

M50-54

9190

40K→25.2M

24.9 - 25.2 mi

Top 79%
×1story
+13ft-16ft

Overall

22508

Males

13023

M50-54

13023

25.2M→Finish

25.2 - 26.2 mi

Top 48%
×2stories
+22ft-21ft

Overall

13650

Males

8839

M50-54

8839

Passing Analysis

Category:
Athletes Passed
1226
Passed By
3425
Net Change
-2199
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10576
5K → 10K125480-355#10576#10931
10K → 15K98474-376#10931#11307
15K → 20K106364-258#11307#11565
20K → Half3532+3#11565#11562
Half → 25K107307-200#11562#11762
25K → 30K206324-118#11762#11880
30K → 20M123121+2#11880#11878
20M → 21M21556-535#11878#12413
21M → 35K13212+120#12413#12293
35K → 23M83188-105#12293#12398
23M → 24M6964+5#12398#12393
24M → 40K56108-52#12393#12445
40K → 25.2M1299-298#12445#12743
25.2M → Finish6496-32#12743#12775
TOTALS12263425-2199
📊

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