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BOSTON MARATHON 2025

Mark Summers

Bib: 1733•M

MO

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 3%
Gender (Male)
#0 / 16105
Top 5%
Division (M18-39)
#0 / 5642
Top 12%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
18:38
Rank: #1072
Start → 5K
18:38 | 6:00/mi
10K· 6.21 mi
37:05
Rank: #994 (+78)
5K → 10K
18:27 | 5:56/mi
15K· 9.32 mi
55:31
Rank: #937 (+57)
10K → 15K
18:27 | 5:56/mi
20K· 12.43 mi
1:14:03
Rank: #887 (+50)
15K → 20K
18:32 | 5:58/mi
Half· 13.11 mi
1:18:06
Rank: #891 (-4)
20K → Half
4:03 | 5:56/mi
25K· 15.53 mi
1:32:39
Rank: #862 (+29)
Half → 25K
14:33 | 6:00/mi
30K· 18.64 mi
1:51:50
Rank: #824 (+38)
25K → 30K
19:11 | 6:10/mi
20M
2:00:25
Rank: #814 (+10)
30K → 20M
8:35 | 6:19/mi
21M
2:07:05
Rank: #813 (+1)
20M → 21M
6:40 | 6:40/mi
35K· 21.75 mi
2:11:32
Rank: #792 (+21)
21M → 35K
4:27 | 5:57/mi
23M
2:19:19
Rank: #770 (+22)
35K → 23M
7:47 | 6:13/mi
24M
2:25:28
Rank: #757 (+13)
23M → 24M
6:09 | 6:09/mi
40K· 24.85 mi
2:31:01
Rank: #775 (-18)
24M → 40K
5:33 | 6:29/mi
25.2M
2:33:37
Rank: #787 (-12)
40K → 25.2M
2:36 | 7:32/mi
Finish· 26.22 mi
2:40:21
Rank: #837 (-50)
25.2M → Finish
6:44 | 6:36/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:18:06
Pace5:57 /mi
2nd Half
Distance13.11 mi
Time1:22:15
Pace6:16 /mi
📊Positive Split: 5.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:19:5418:386:0018:38
6:00
-
10K
6.21 mi10:38:2137:055:5818:27
5:56
-0:04
15K
9.32 mi10:56:4755:315:5718:27
5:56
0:00
20K
12.43 mi11:15:191:14:035:5818:32
5:58
+0:02
Half
13.11 mi11:19:221:18:065:574:03
5:56
-0:02
25K
15.53 mi11:33:551:32:395:5814:33
6:00
+0:04
30K
18.64 mi11:53:061:51:506:0019:11
6:10
+0:10
20M
20.00 mi12:01:412:00:256:018:35
6:19
+0:09
21M
21.00 mi12:08:212:07:056:036:40
6:40
+0:21
35K
21.75 mi12:12:482:11:326:034:27
5:57
-0:43
23M
23.00 mi12:20:352:19:196:037:47
6:13
+0:16
24M
24.00 mi12:26:442:25:286:046:09
6:09
-0:04
40K
24.85 mi12:32:172:31:016:055:33
6:29
+0:20
25.2M
25.20 mi12:34:532:33:376:062:36
7:32
+1:03
Finish
26.22 mi12:41:372:40:216:076:44
6:36
-0:56

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

5:56 /mi

Average Pace

6:07 /mi

Slowest Pace

7:32 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

40:56

26% of race

Time at Steady Pace

1:37:52

61% of race

Time at Slower Pace

21:33

13% of race

Average Pace: 6:07 /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 mi10:19:5418:386:0018:38
6:00
#1072
10K
6.21 mi10:38:2137:055:5818:27
5:56
#994
15K
9.32 mi10:56:4755:315:5718:27
5:56
#937
20K
12.43 mi11:15:191:14:035:5818:32
5:58
#887
Half
13.11 mi11:19:221:18:065:574:03
5:56
#891
25K
15.53 mi11:33:551:32:395:5814:33
6:00
#862
30K
18.64 mi11:53:061:51:506:0019:11
6:10
#824
20M
20.00 mi12:01:412:00:256:018:35
6:19
#814
21M
21.00 mi12:08:212:07:056:036:40
6:40
#813
35K
21.75 mi12:12:482:11:326:034:27
5:57
#792
23M
23.00 mi12:20:352:19:196:037:47
6:13
#770
24M
24.00 mi12:26:442:25:286:046:09
6:09
#757
40K
24.85 mi12:32:172:31:016:055:33
6:29
#775
25.2M
25.20 mi12:34:532:33:376:062:36
7:32
#787
Finish
26.22 mi12:41:372:40:216:076:44
6:36
#837
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi107210131013841(Top 3%)789(Top 5%)789(Top 14%)
10K6.21 mi3.10 mi994+78936+77936+77924(Top 3%)870(Top 5%)870(Top 15%)
15K9.32 mi3.11 mi937+57881+55881+55841(Top 3%)789(Top 5%)789(Top 14%)
20K12.43 mi3.11 mi887+50834+47834+47783(Top 3%)734(Top 5%)734(Top 13%)
Half13.11 mi0.68 mi891-4838-4838-4921(Top 3%)871(Top 5%)871(Top 15%)
25K15.53 mi2.42 mi862+29810+28810+28808(Top 3%)758(Top 5%)758(Top 13%)
30K18.64 mi3.11 mi824+38774+36774+36846(Top 3%)792(Top 5%)792(Top 14%)
20M20.00 mi1.36 mi814+10764+10764+10992(Top 3%)935(Top 6%)935(Top 17%)
21M21.00 mi1.00 mi813+1763+1763+11091(Top 4%)1030(Top 6%)1030(Top 18%)
35K21.75 mi0.75 mi792+21742+21742+21623(Top 2%)582(Top 4%)582(Top 10%)
23M23.00 mi1.25 mi770+22721+21721+21702(Top 2%)663(Top 4%)663(Top 12%)
24M24.00 mi1.00 mi757+13708+13708+13887(Top 3%)833(Top 5%)833(Top 15%)
40K24.85 mi0.85 mi775-18725-17725-171543(Top 5%)1427(Top 9%)1427(Top 25%)
25.2M25.20 mi0.35 mi787-12735-10735-103484(Top 12%)3028(Top 19%)3028(Top 54%)
Finish26.22 mi1.02 mi837-50783-48783-483338(Top 12%)2922(Top 18%)2922(Top 52%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 3%
×21stories
+97ft-345ft

Overall

841

Males

789

M18-39

789

5K→10K

3.1 - 6.2 mi

Top 3%
×5stories
+79ft-138ft

Overall

924

Males

870

M18-39

870

10K→15K

6.2 - 9.3 mi

Top 3%
×3stories
+67ft-78ft

Overall

841

Males

789

M18-39

789

15K→20K

9.3 - 12.4 mi

Top 3%
×5stories
+106ft-86ft

Overall

783

Males

734

M18-39

734

20K→Half

12.4 - 13.1 mi

Top 3%
×2stories
+19ft-37ft

Overall

921

Males

871

M18-39

871

Half→25K

13.1 - 15.5 mi

Top 3%
×4stories
+66ft-88ft

Overall

808

Males

758

M18-39

758

25K→30K

15.5 - 18.6 mi

Top 3%
×9stories
+181ft-148ft

Overall

846

Males

792

M18-39

792

30K→20M

18.6 - 20.0 mi

Top 3%
×5stories
+64ft-50ft

Overall

992

Males

935

M18-39

935

20M→21M

20.0 - 21.0 mi

Top 4%
×8stories
+106ft-24ft

Overall

1091

Males

1030

M18-39

1030

21M→35K

21.0 - 21.8 mi

Top 2%
×7stories
+17ft-86ft

Overall

623

Males

582

M18-39

582

35K→23M

21.8 - 23.0 mi

Top 2%
×5stories
+23ft-63ft

Overall

702

Males

663

M18-39

663

23M→24M

23.0 - 24.0 mi

Top 3%
×6stories
+12ft-82ft

Overall

887

Males

833

M18-39

833

24M→40K

24.0 - 24.9 mi

Top 5%
×1story
+6ft-20ft

Overall

1543

Males

1427

M18-39

1427

40K→25.2M

24.9 - 25.2 mi

Top 12%
×1story
+13ft-16ft

Overall

3484

Males

3028

M18-39

3028

25.2M→Finish

25.2 - 26.2 mi

Top 12%
×2stories
+22ft-21ft

Overall

3338

Males

2922

M18-39

2922

Passing Analysis

Category:
Athletes Passed
439
Passed By
204
Net Change
+235
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1072
5K → 10K9012+78#1072#994
10K → 15K625+57#994#937
15K → 20K599+50#937#887
20K → Half59-4#887#891
Half → 25K367+29#891#862
25K → 30K6224+38#862#824
30K → 20M2010+10#824#814
20M → 21M1615+1#814#813
21M → 35K254+21#813#792
35K → 23M286+22#792#770
23M → 24M196+13#770#757
24M → 40K1028-18#757#775
40K → 25.2M214-12#775#787
25.2M → Finish555-50#787#837
TOTALS439204+235
📊

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