Boston Marathon logo
BOSTON MARATHON 2025

Alex Cobin

Bib: 4196•M

MO

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 28404
Top 4%
Gender (Male)
#0 / 16105
Top 6%
Division (M18-39)
#0 / 5642
Top 14%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:15
Rank: #1830
Start → 5K
19:15 | 6:12/mi
10K· 6.21 mi
38:26
Rank: #1792 (+38)
5K → 10K
19:11 | 6:10/mi
15K· 9.32 mi
57:23
Rank: #1636 (+156)
10K → 15K
18:57 | 6:06/mi
20K· 12.43 mi
1:16:18
Rank: #1492 (+144)
15K → 20K
18:55 | 6:05/mi
Half· 13.11 mi
1:20:23
Rank: #1469 (+23)
20K → Half
4:05 | 5:59/mi
25K· 15.53 mi
1:35:05
Rank: #1355 (+114)
Half → 25K
14:42 | 6:04/mi
30K· 18.64 mi
1:54:26
Rank: #1266 (+89)
25K → 30K
19:21 | 6:14/mi
20M
2:03:02
Rank: #1234 (+32)
30K → 20M
8:36 | 6:20/mi
21M
2:09:34
Rank: #1178 (+56)
20M → 21M
6:32 | 6:32/mi
35K· 21.75 mi
2:14:08
Rank: #1152 (+26)
21M → 35K
4:34 | 6:06/mi
23M
2:22:10
Rank: #1110 (+42)
35K → 23M
8:02 | 6:25/mi
24M
2:28:22
Rank: #1093 (+17)
23M → 24M
6:12 | 6:12/mi
40K· 24.85 mi
2:33:37
Rank: #1054 (+39)
24M → 40K
5:15 | 6:08/mi
25.2M
2:35:58
Rank: #1038 (+16)
40K → 25.2M
2:21 | 6:49/mi
Finish· 26.22 mi
2:42:06
Rank: #1010 (+28)
25.2M → Finish
6:08 | 6:01/mi

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:20:23
Pace6:08 /mi
2nd Half
Distance13.11 mi
Time1:21:43
Pace6:14 /mi
📊Positive Split: 1.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:0519:156:1219:15
6:12
-
10K
6.21 mi10:41:1638:266:1119:11
6:10
-0:02
15K
9.32 mi11:00:1357:236:0918:57
6:06
-0:04
20K
12.43 mi11:19:081:16:186:0818:55
6:05
-0:01
Half
13.11 mi11:23:131:20:236:084:05
5:59
-0:06
25K
15.53 mi11:37:551:35:056:0714:42
6:04
+0:05
30K
18.64 mi11:57:161:54:266:0819:21
6:14
+0:10
20M
20.00 mi12:05:522:03:026:098:36
6:20
+0:06
21M
21.00 mi12:12:242:09:346:106:32
6:32
+0:12
35K
21.75 mi12:16:582:14:086:104:34
6:06
-0:26
23M
23.00 mi12:25:002:22:106:118:02
6:25
+0:19
24M
24.00 mi12:31:122:28:226:116:12
6:12
-0:13
40K
24.85 mi12:36:272:33:376:115:15
6:08
-0:04
25.2M
25.20 mi12:38:482:35:586:112:21
6:49
+0:41
Finish
26.22 mi12:44:562:42:066:116:08
6:01
-0:48

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

5:59 /mi

Average Pace

6:11 /mi

Slowest Pace

6:49 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:39:45

99% of race

Time at Steady Pace

2:21

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:11 /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 mi10:22:0519:156:1219:15
6:12
#1830
10K
6.21 mi10:41:1638:266:1119:11
6:10
#1792
15K
9.32 mi11:00:1357:236:0918:57
6:06
#1636
20K
12.43 mi11:19:081:16:186:0818:55
6:05
#1492
Half
13.11 mi11:23:131:20:236:084:05
5:59
#1469
25K
15.53 mi11:37:551:35:056:0714:42
6:04
#1355
30K
18.64 mi11:57:161:54:266:0819:21
6:14
#1266
20M
20.00 mi12:05:522:03:026:098:36
6:20
#1234
21M
21.00 mi12:12:242:09:346:106:32
6:32
#1178
35K
21.75 mi12:16:582:14:086:104:34
6:06
#1152
23M
23.00 mi12:25:002:22:106:118:02
6:25
#1110
24M
24.00 mi12:31:122:28:226:116:12
6:12
#1093
40K
24.85 mi12:36:272:33:376:115:15
6:08
#1054
25.2M
25.20 mi12:38:482:35:586:112:21
6:49
#1038
Finish
26.22 mi12:44:562:42:066:116:08
6:01
#1010
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi1830173817381362(Top 5%)1294(Top 8%)1294(Top 23%)
10K6.21 mi3.10 mi1792+381703+351703+351779(Top 6%)1688(Top 10%)1688(Top 30%)
15K9.32 mi3.11 mi1636+1561557+1461557+1461362(Top 5%)1294(Top 8%)1294(Top 23%)
20K12.43 mi3.11 mi1492+1441417+1401417+1401135(Top 4%)1071(Top 7%)1071(Top 19%)
Half13.11 mi0.68 mi1469+231394+231394+231090(Top 4%)1032(Top 6%)1032(Top 18%)
25K15.53 mi2.42 mi1355+1141284+1101284+110974(Top 3%)918(Top 6%)918(Top 16%)
30K18.64 mi3.11 mi1266+891195+891195+89994(Top 3%)934(Top 6%)934(Top 17%)
20M20.00 mi1.36 mi1234+321165+301165+301021(Top 4%)963(Top 6%)963(Top 17%)
21M21.00 mi1.00 mi1178+561110+551110+55758(Top 3%)717(Top 4%)717(Top 13%)
35K21.75 mi0.75 mi1152+261085+251085+25961(Top 3%)904(Top 6%)904(Top 16%)
23M23.00 mi1.25 mi1110+421045+401045+401184(Top 4%)1114(Top 7%)1114(Top 20%)
24M24.00 mi1.00 mi1093+171029+161029+161017(Top 4%)956(Top 6%)956(Top 17%)
40K24.85 mi0.85 mi1054+39993+36993+36619(Top 2%)579(Top 4%)579(Top 10%)
25.2M25.20 mi0.35 mi1038+16977+16977+16994(Top 3%)912(Top 6%)912(Top 16%)
Finish26.22 mi1.02 mi1010+28949+28949+28952(Top 3%)894(Top 6%)894(Top 16%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 5%
×21stories
+97ft-345ft

Overall

1362

Males

1294

M18-39

1294

5K→10K

3.1 - 6.2 mi

Top 6%
×5stories
+79ft-138ft

Overall

1779

Males

1688

M18-39

1688

10K→15K

6.2 - 9.3 mi

Top 5%
×3stories
+67ft-78ft

Overall

1362

Males

1294

M18-39

1294

15K→20K

9.3 - 12.4 mi

Top 4%
×5stories
+106ft-86ft

Overall

1135

Males

1071

M18-39

1071

20K→Half

12.4 - 13.1 mi

Top 4%
×2stories
+19ft-37ft

Overall

1090

Males

1032

M18-39

1032

Half→25K

13.1 - 15.5 mi

Top 3%
×4stories
+66ft-88ft

Overall

974

Males

918

M18-39

918

25K→30K

15.5 - 18.6 mi

Top 3%
×9stories
+181ft-148ft

Overall

994

Males

934

M18-39

934

30K→20M

18.6 - 20.0 mi

Top 4%
×5stories
+64ft-50ft

Overall

1021

Males

963

M18-39

963

20M→21M

20.0 - 21.0 mi

Top 3%
×8stories
+106ft-24ft

Overall

758

Males

717

M18-39

717

21M→35K

21.0 - 21.8 mi

Top 3%
×7stories
+17ft-86ft

Overall

961

Males

904

M18-39

904

35K→23M

21.8 - 23.0 mi

Top 4%
×5stories
+23ft-63ft

Overall

1184

Males

1114

M18-39

1114

23M→24M

23.0 - 24.0 mi

Top 4%
×6stories
+12ft-82ft

Overall

1017

Males

956

M18-39

956

24M→40K

24.0 - 24.9 mi

Top 2%
×1story
+6ft-20ft

Overall

619

Males

579

M18-39

579

40K→25.2M

24.9 - 25.2 mi

Top 3%
×1story
+13ft-16ft

Overall

994

Males

912

M18-39

912

25.2M→Finish

25.2 - 26.2 mi

Top 3%
×2stories
+22ft-21ft

Overall

952

Males

894

M18-39

894

Passing Analysis

Category:
Athletes Passed
971
Passed By
151
Net Change
+820
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1830
5K → 10K11173+38#1830#1792
10K → 15K1626+156#1792#1636
15K → 20K1451+144#1636#1492
20K → Half241+23#1492#1469
Half → 25K1173+114#1469#1355
25K → 30K10617+89#1355#1266
30K → 20M4513+32#1266#1234
20M → 21M604+56#1234#1178
21M → 35K337+26#1178#1152
35K → 23M5210+42#1152#1110
23M → 24M258+17#1110#1093
24M → 40K434+39#1093#1054
40K → 25.2M182+16#1054#1038
25.2M → Finish302+28#1038#1010
TOTALS971151+820
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing