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BOSTON MARATHON 2025

Michael Duffy

Bib: 6537•M

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 24%
Gender (Male)
#0 / 16105
Top 36%
Division (M18-39)
#0 / 5642
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:01
Rank: #6053
Start → 5K
21:01 | 6:46/mi
10K· 6.21 mi
42:43
Rank: #6969 (-916)
5K → 10K
21:42 | 6:59/mi
15K· 9.32 mi
1:04:24
Rank: #7154 (-185)
10K → 15K
21:41 | 6:59/mi
20K· 12.43 mi
1:25:50
Rank: #6873 (+281)
15K → 20K
21:26 | 6:54/mi
Half· 13.11 mi
1:30:30
Rank: #6848 (+25)
20K → Half
4:40 | 6:50/mi
25K· 15.53 mi
1:47:53
Rank: #6888 (-40)
Half → 25K
17:23 | 7:10/mi
30K· 18.64 mi
2:11:12
Rank: #6910 (-22)
25K → 30K
23:19 | 7:30/mi
20M
2:21:23
Rank: #6826 (+84)
30K → 20M
10:11 | 7:30/mi
21M
2:29:29
Rank: #6807 (+19)
20M → 21M
8:06 | 8:06/mi
35K· 21.75 mi
2:35:07
Rank: #6860 (-53)
21M → 35K
5:38 | 7:32/mi
23M
2:45:06
Rank: #6971 (-111)
35K → 23M
9:59 | 7:58/mi
24M
2:52:41
Rank: #6970 (+1)
23M → 24M
7:35 | 7:35/mi
40K· 24.85 mi
2:59:12
Rank: #6940 (+30)
24M → 40K
6:31 | 7:37/mi
25.2M
3:02:00
Rank: #6914 (+26)
40K → 25.2M
2:48 | 8:07/mi
Finish· 26.22 mi
3:09:03
Rank: #6785 (+129)
25.2M → Finish
7:03 | 6:55/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:30:30
Pace6:54 /mi
2nd Half
Distance13.11 mi
Time1:38:33
Pace7:31 /mi
📊Positive Split: 8.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:26:5321:016:4621:01
6:46
-
10K
6.21 mi10:48:3542:436:5221:42
6:59
+0:13
15K
9.32 mi11:10:161:04:246:5521:41
6:59
0:00
20K
12.43 mi11:31:421:25:506:5421:26
6:54
-0:05
Half
13.11 mi11:36:221:30:306:544:40
6:50
-0:04
25K
15.53 mi11:53:451:47:536:5717:23
7:10
+0:20
30K
18.64 mi12:17:042:11:127:0223:19
7:30
+0:20
20M
20.00 mi12:27:152:21:237:0410:11
7:30
0:00
21M
21.00 mi12:35:212:29:297:078:06
8:06
+0:36
35K
21.75 mi12:40:592:35:077:085:38
7:32
-0:34
23M
23.00 mi12:50:582:45:067:119:59
7:58
+0:26
24M
24.00 mi12:58:332:52:417:127:35
7:35
-0:23
40K
24.85 mi13:05:042:59:127:136:31
7:37
+0:02
25.2M
25.20 mi13:07:523:02:007:132:48
8:07
+0:30
Finish
26.22 mi13:14:553:09:037:137:03
6:55
-1:12

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

6:46 /mi

Average Pace

7:13 /mi

Slowest Pace

8:07 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:54:56

61% of race

Time at Steady Pace

1:03:13

33% of race

Time at Slower Pace

10:54

6% of race

Average Pace: 7:13 /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 mi10:26:5321:016:4621:01
6:46
#6053
10K
6.21 mi10:48:3542:436:5221:42
6:59
#6969
15K
9.32 mi11:10:161:04:246:5521:41
6:59
#7154
20K
12.43 mi11:31:421:25:506:5421:26
6:54
#6873
Half
13.11 mi11:36:221:30:306:544:40
6:50
#6848
25K
15.53 mi11:53:451:47:536:5717:23
7:10
#6888
30K
18.64 mi12:17:042:11:127:0223:19
7:30
#6910
20M
20.00 mi12:27:152:21:237:0410:11
7:30
#6826
21M
21.00 mi12:35:212:29:297:078:06
8:06
#6807
35K
21.75 mi12:40:592:35:077:085:38
7:32
#6860
23M
23.00 mi12:50:582:45:067:119:59
7:58
#6971
24M
24.00 mi12:58:332:52:417:127:35
7:35
#6970
40K
24.85 mi13:05:042:59:127:136:31
7:37
#6940
25.2M
25.20 mi13:07:523:02:007:132:48
8:07
#6914
Finish
26.22 mi13:14:553:09:037:137:03
6:55
#6785
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi6053556155617479(Top 26%)6598(Top 41%)6598(Top 117%)
10K6.21 mi3.10 mi6969-9166272-7116272-7117825(Top 28%)6857(Top 43%)6857(Top 122%)
15K9.32 mi3.11 mi7154-1856403-1316403-1317479(Top 26%)6598(Top 41%)6598(Top 117%)
20K12.43 mi3.11 mi6873+2816184+2196184+2196188(Top 22%)5578(Top 35%)5578(Top 99%)
Half13.11 mi0.68 mi6848+256163+216163+216495(Top 23%)5835(Top 36%)5835(Top 103%)
25K15.53 mi2.42 mi6888-406166-36166-37387(Top 26%)6372(Top 40%)6372(Top 113%)
30K18.64 mi3.11 mi6910-226139+276139+277765(Top 27%)6446(Top 40%)6446(Top 114%)
20M20.00 mi1.36 mi6826+846052+876052+876958(Top 24%)5811(Top 36%)5811(Top 103%)
21M21.00 mi1.00 mi6807+196015+376015+377929(Top 28%)6211(Top 39%)6211(Top 110%)
35K21.75 mi0.75 mi6860-536041-266041-268792(Top 31%)6723(Top 42%)6723(Top 119%)
23M23.00 mi1.25 mi6971-1116081-406081-409808(Top 35%)7126(Top 44%)7126(Top 126%)
24M24.00 mi1.00 mi6970+16041+406041+408262(Top 29%)6252(Top 39%)6252(Top 111%)
40K24.85 mi0.85 mi6940+306000+416000+417528(Top 27%)5733(Top 36%)5733(Top 102%)
25.2M25.20 mi0.35 mi6914+265968+325968+326576(Top 23%)5105(Top 32%)5105(Top 90%)
Finish26.22 mi1.02 mi6785+1295851+1175851+1175217(Top 18%)4265(Top 26%)4265(Top 76%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 26%
×21stories
+97ft-345ft

Overall

7479

Males

6598

M18-39

6598

5K→10K

3.1 - 6.2 mi

Top 28%
×5stories
+79ft-138ft

Overall

7825

Males

6857

M18-39

6857

10K→15K

6.2 - 9.3 mi

Top 26%
×3stories
+67ft-78ft

Overall

7479

Males

6598

M18-39

6598

15K→20K

9.3 - 12.4 mi

Top 22%
×5stories
+106ft-86ft

Overall

6188

Males

5578

M18-39

5578

20K→Half

12.4 - 13.1 mi

Top 23%
×2stories
+19ft-37ft

Overall

6495

Males

5835

M18-39

5835

Half→25K

13.1 - 15.5 mi

Top 26%
×4stories
+66ft-88ft

Overall

7387

Males

6372

M18-39

6372

25K→30K

15.5 - 18.6 mi

Top 27%
×9stories
+181ft-148ft

Overall

7765

Males

6446

M18-39

6446

30K→20M

18.6 - 20.0 mi

Top 24%
×5stories
+64ft-50ft

Overall

6958

Males

5811

M18-39

5811

20M→21M

20.0 - 21.0 mi

Top 28%
×8stories
+106ft-24ft

Overall

7929

Males

6211

M18-39

6211

21M→35K

21.0 - 21.8 mi

Top 31%
×7stories
+17ft-86ft

Overall

8792

Males

6723

M18-39

6723

35K→23M

21.8 - 23.0 mi

Top 35%
×5stories
+23ft-63ft

Overall

9808

Males

7126

M18-39

7126

23M→24M

23.0 - 24.0 mi

Top 29%
×6stories
+12ft-82ft

Overall

8262

Males

6252

M18-39

6252

24M→40K

24.0 - 24.9 mi

Top 27%
×1story
+6ft-20ft

Overall

7528

Males

5733

M18-39

5733

40K→25.2M

24.9 - 25.2 mi

Top 23%
×1story
+13ft-16ft

Overall

6576

Males

5105

M18-39

5105

25.2M→Finish

25.2 - 26.2 mi

Top 18%
×2stories
+22ft-21ft

Overall

5217

Males

4265

M18-39

4265

Passing Analysis

Category:
Athletes Passed
1397
Passed By
2129
Net Change
-732
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6053
5K → 10K29945-916#6053#6969
10K → 15K89274-185#6969#7154
15K → 20K31332+281#7154#6873
20K → Half327+25#6873#6848
Half → 25K110150-40#6848#6888
25K → 30K172194-22#6888#6910
30K → 20M13046+84#6910#6826
20M → 21M9576+19#6826#6807
21M → 35K3588-53#6807#6860
35K → 23M59170-111#6860#6971
23M → 24M7574+1#6971#6970
24M → 40K7141+30#6970#6940
40K → 25.2M4014+26#6940#6914
25.2M → Finish14718+129#6914#6785
TOTALS13972129-732
📊

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