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BOSTON MARATHON 2025

Fred Chen

Bib: 4692•M

HI

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0:00
/ mi
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Overall
#0 / 28404
Top 14%
Gender (Male)
#0 / 16105
Top 23%
Division (M18-39)
#0 / 5642
Top 48%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:11
Rank: #3802
Start → 5K
20:11 | 6:30/mi
10K· 6.21 mi
40:23
Rank: #3765 (+37)
5K → 10K
20:12 | 6:30/mi
15K· 9.32 mi
1:00:44
Rank: #3809 (-44)
10K → 15K
20:21 | 6:33/mi
20K· 12.43 mi
1:21:22
Rank: #3808 (+1)
15K → 20K
20:38 | 6:38/mi
Half· 13.11 mi
1:25:48
Rank: #3799 (+9)
20K → Half
4:26 | 6:30/mi
25K· 15.53 mi
1:41:55
Rank: #3760 (+39)
Half → 25K
16:07 | 6:39/mi
30K· 18.64 mi
2:03:30
Rank: #3790 (-30)
25K → 30K
21:35 | 6:57/mi
20M
2:13:11
Rank: #3831 (-41)
30K → 20M
9:41 | 7:08/mi
21M
2:20:46
Rank: #3870 (-39)
20M → 21M
7:35 | 7:35/mi
35K· 21.75 mi
2:25:58
Rank: #3897 (-27)
21M → 35K
5:12 | 6:57/mi
23M
2:35:00
Rank: #3943 (-46)
35K → 23M
9:02 | 7:13/mi
24M
2:42:03
Rank: #3973 (-30)
23M → 24M
7:03 | 7:03/mi
40K· 24.85 mi
2:48:13
Rank: #3987 (-14)
24M → 40K
6:10 | 7:13/mi
25.2M
2:50:57
Rank: #4004 (-17)
40K → 25.2M
2:44 | 7:56/mi
Finish· 26.22 mi
2:58:04
Rank: #4055 (-51)
25.2M → Finish
7:07 | 6:59/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:25:48
Pace6:33 /mi
2nd Half
Distance13.11 mi
Time1:32:16
Pace7:02 /mi
📊Positive Split: 7.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:24:0520:116:3020:11
6:30
-
10K
6.21 mi10:44:1740:236:3020:12
6:30
0:00
15K
9.32 mi11:04:381:00:446:3120:21
6:33
+0:03
20K
12.43 mi11:25:161:21:226:3320:38
6:38
+0:05
Half
13.11 mi11:29:421:25:486:334:26
6:30
-0:08
25K
15.53 mi11:45:491:41:556:3416:07
6:39
+0:09
30K
18.64 mi12:07:242:03:306:3821:35
6:57
+0:18
20M
20.00 mi12:17:052:13:116:409:41
7:08
+0:11
21M
21.00 mi12:24:402:20:466:427:35
7:35
+0:27
35K
21.75 mi12:29:522:25:586:435:12
6:57
-0:38
23M
23.00 mi12:38:542:35:006:449:02
7:13
+0:16
24M
24.00 mi12:45:572:42:036:457:03
7:03
-0:10
40K
24.85 mi12:52:072:48:136:466:10
7:13
+0:10
25.2M
25.20 mi12:54:512:50:576:472:44
7:56
+0:43
Finish
26.22 mi13:01:582:58:046:487:07
6:59
-0:57

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

6:30 /mi

Average Pace

6:48 /mi

Slowest Pace

7:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:41:55

57% of race

Time at Steady Pace

50:38

28% of race

Time at Slower Pace

25:31

14% of race

Average Pace: 6:47 /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 mi10:24:0520:116:3020:11
6:30
#3802
10K
6.21 mi10:44:1740:236:3020:12
6:30
#3765
15K
9.32 mi11:04:381:00:446:3120:21
6:33
#3809
20K
12.43 mi11:25:161:21:226:3320:38
6:38
#3808
Half
13.11 mi11:29:421:25:486:334:26
6:30
#3799
25K
15.53 mi11:45:491:41:556:3416:07
6:39
#3760
30K
18.64 mi12:07:242:03:306:3821:35
6:57
#3790
20M
20.00 mi12:17:052:13:116:409:41
7:08
#3831
21M
21.00 mi12:24:402:20:466:427:35
7:35
#3870
35K
21.75 mi12:29:522:25:586:435:12
6:57
#3897
23M
23.00 mi12:38:542:35:006:449:02
7:13
#3943
24M
24.00 mi12:45:572:42:036:457:03
7:03
#3973
40K
24.85 mi12:52:072:48:136:466:10
7:13
#3987
25.2M
25.20 mi12:54:512:50:576:472:44
7:56
#4004
Finish
26.22 mi13:01:582:58:046:487:07
6:59
#4055
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3802359735973872(Top 14%)3652(Top 23%)3652(Top 65%)
10K6.21 mi3.10 mi3765+373565+323565+323728(Top 13%)3517(Top 22%)3517(Top 62%)
15K9.32 mi3.11 mi3809-443595-303595-303872(Top 14%)3652(Top 23%)3652(Top 65%)
20K12.43 mi3.11 mi3808+13592+33592+33949(Top 14%)3716(Top 23%)3716(Top 66%)
Half13.11 mi0.68 mi3799+93584+83584+83641(Top 13%)3441(Top 21%)3441(Top 61%)
25K15.53 mi2.42 mi3760+393548+363548+363766(Top 13%)3531(Top 22%)3531(Top 63%)
30K18.64 mi3.11 mi3790-303573-253573-254367(Top 15%)3998(Top 25%)3998(Top 71%)
20M20.00 mi1.36 mi3831-413605-323605-324786(Top 17%)4312(Top 27%)4312(Top 76%)
21M21.00 mi1.00 mi3870-393631-263631-264998(Top 18%)4365(Top 27%)4365(Top 77%)
35K21.75 mi0.75 mi3897-273650-193650-195002(Top 18%)4369(Top 27%)4369(Top 77%)
23M23.00 mi1.25 mi3943-463678-283678-284938(Top 17%)4264(Top 26%)4264(Top 76%)
24M24.00 mi1.00 mi3973-303692-143692-144881(Top 17%)4169(Top 26%)4169(Top 74%)
40K24.85 mi0.85 mi3987-143701-93701-95090(Top 18%)4261(Top 26%)4261(Top 76%)
25.2M25.20 mi0.35 mi4004-173710-93710-95475(Top 19%)4393(Top 27%)4393(Top 78%)
Finish26.22 mi1.02 mi4055-513746-363746-365592(Top 20%)4463(Top 28%)4463(Top 79%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 14%
×21stories
+97ft-345ft

Overall

3872

Males

3652

M18-39

3652

5K→10K

3.1 - 6.2 mi

Top 13%
×5stories
+79ft-138ft

Overall

3728

Males

3517

M18-39

3517

10K→15K

6.2 - 9.3 mi

Top 14%
×3stories
+67ft-78ft

Overall

3872

Males

3652

M18-39

3652

15K→20K

9.3 - 12.4 mi

Top 14%
×5stories
+106ft-86ft

Overall

3949

Males

3716

M18-39

3716

20K→Half

12.4 - 13.1 mi

Top 13%
×2stories
+19ft-37ft

Overall

3641

Males

3441

M18-39

3441

Half→25K

13.1 - 15.5 mi

Top 13%
×4stories
+66ft-88ft

Overall

3766

Males

3531

M18-39

3531

25K→30K

15.5 - 18.6 mi

Top 15%
×9stories
+181ft-148ft

Overall

4367

Males

3998

M18-39

3998

30K→20M

18.6 - 20.0 mi

Top 17%
×5stories
+64ft-50ft

Overall

4786

Males

4312

M18-39

4312

20M→21M

20.0 - 21.0 mi

Top 18%
×8stories
+106ft-24ft

Overall

4998

Males

4365

M18-39

4365

21M→35K

21.0 - 21.8 mi

Top 18%
×7stories
+17ft-86ft

Overall

5002

Males

4369

M18-39

4369

35K→23M

21.8 - 23.0 mi

Top 17%
×5stories
+23ft-63ft

Overall

4938

Males

4264

M18-39

4264

23M→24M

23.0 - 24.0 mi

Top 17%
×6stories
+12ft-82ft

Overall

4881

Males

4169

M18-39

4169

24M→40K

24.0 - 24.9 mi

Top 18%
×1story
+6ft-20ft

Overall

5090

Males

4261

M18-39

4261

40K→25.2M

24.9 - 25.2 mi

Top 19%
×1story
+13ft-16ft

Overall

5475

Males

4393

M18-39

4393

25.2M→Finish

25.2 - 26.2 mi

Top 20%
×2stories
+22ft-21ft

Overall

5592

Males

4463

M18-39

4463

Passing Analysis

Category:
Athletes Passed
834
Passed By
1087
Net Change
-253
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3802
5K → 10K149112+37#3802#3765
10K → 15K79123-44#3765#3809
15K → 20K9392+1#3809#3808
20K → Half178+9#3808#3799
Half → 25K9960+39#3799#3760
25K → 30K90120-30#3760#3790
30K → 20M5293-41#3790#3831
20M → 21M4887-39#3831#3870
21M → 35K2653-27#3870#3897
35K → 23M54100-46#3897#3943
23M → 24M4272-30#3943#3973
24M → 40K3953-14#3973#3987
40K → 25.2M1633-17#3987#4004
25.2M → Finish3081-51#4004#4055
TOTALS8341087-253
📊

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