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BOSTON MARATHON 2025

Cooper Hammarlund

Bib: 6679•M

GA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 13%
Gender (Male)
#0 / 16105
Top 21%
Division (M18-39)
#0 / 5642
Top 44%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
6:43/mi
20:51
↑ 97↓ 3451.5%
10K· 6.21 mi
6:36/mi
41:21
↑ 79↓ 1380.4%
15K· 9.32 mi
6:42/mi
1:02:10
↑ 67↓ 78
20K· 12.43 mi
6:41/mi
1:22:55
↑ 106↓ 860.1%
Half· 13.11 mi
6:36/mi
1:27:25
↑ 19↓ 370.5%
25K· 15.53 mi
6:42/mi
1:43:40
↑ 66↓ 880.2%
30K· 18.64 mi
6:48/mi
2:04:47
↑ 181↓ 1480.2%
20M
6:45/mi
2:13:58
↑ 64↓ 500.2%
21M
7:05/mi
2:21:03
↑ 106↓ 241.6%
35K· 21.75 mi
6:37/mi
2:26:00
↑ 17↓ 861.7%
23M
6:55/mi
2:34:39
↑ 23↓ 630.6%
24M
6:44/mi
2:41:23
↓ 821.3%
40K· 24.85 mi
6:46/mi
2:47:10
↓ 200.3%
25.2M
7:29/mi
2:49:45
↑ 13↓ 160.2%
Finish· 26.22 mi
6:30/mi
2:56:22
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:27:25
Pace6:40 /mi
2nd Half
Distance13.11 mi
Time1:28:57
Pace6:47 /mi
📊Positive Split: 1.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:28:1820:516:4320:51
6:43
-
10K
6.21 mi10:48:4841:216:3920:30
6:36
-0:07
15K
9.32 mi11:09:371:02:106:4020:49
6:42
+0:06
20K
12.43 mi11:30:221:22:556:4020:45
6:41
-0:01
Half
13.11 mi11:34:521:27:256:404:30
6:36
-0:05
25K
15.53 mi11:51:071:43:406:4016:15
6:42
+0:06
30K
18.64 mi12:12:142:04:476:4221:07
6:48
+0:06
20M
20.00 mi12:21:252:13:586:429:11
6:45
-0:03
21M
21.00 mi12:28:302:21:036:437:05
7:05
+0:20
35K
21.75 mi12:33:272:26:006:434:57
6:37
-0:28
23M
23.00 mi12:42:062:34:396:438:39
6:55
+0:18
24M
24.00 mi12:48:502:41:236:436:44
6:44
-0:11
40K
24.85 mi12:54:372:47:106:445:47
6:46
+0:02
25.2M
25.20 mi12:57:122:49:456:442:35
7:29
+0:43
Finish
26.22 mi13:03:492:56:226:446:37
6:30
-0:59

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

6:44 /mi

Slowest Pace

7:29 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:53:47

99% of race

Time at Steady Pace

2:35

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:44 /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 mi10:28:1820:516:4320:51
6:43
#5540
10K
6.21 mi10:48:4841:216:3920:30
6:36
#4968
15K
9.32 mi11:09:371:02:106:4020:49
6:42
#4954
20K
12.43 mi11:30:221:22:556:4020:45
6:41
#4748
Half
13.11 mi11:34:521:27:256:404:30
6:36
#4722
25K
15.53 mi11:51:071:43:406:4016:15
6:42
#4570
30K
18.64 mi12:12:142:04:476:4221:07
6:48
#4270
20M
20.00 mi12:21:252:13:586:429:11
6:45
#4099
21M
21.00 mi12:28:302:21:036:437:05
7:05
#3965
35K
21.75 mi12:33:272:26:006:434:57
6:37
#3908
23M
23.00 mi12:42:062:34:396:438:39
6:55
#3837
24M
24.00 mi12:48:502:41:236:436:44
6:44
#3777
40K
24.85 mi12:54:372:47:106:445:47
6:46
#3699
25.2M
25.20 mi12:57:122:49:456:442:35
7:29
#3669
Finish
26.22 mi13:03:492:56:226:446:37
6:30
#3586
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi5540513051305077(Top 18%)4712(Top 29%)4712(Top 84%)
10K6.21 mi3.10 mi4968+5724634+4964634+4964467(Top 16%)4186(Top 26%)4186(Top 74%)
15K9.32 mi3.11 mi4954+144620+144620+145077(Top 18%)4712(Top 29%)4712(Top 84%)
20K12.43 mi3.11 mi4748+2064430+1904430+1904252(Top 15%)3980(Top 25%)3980(Top 71%)
Half13.11 mi0.68 mi4722+264409+214409+214396(Top 15%)4118(Top 26%)4118(Top 73%)
25K15.53 mi2.42 mi4570+1524271+1384271+1384163(Top 15%)3875(Top 24%)3875(Top 69%)
30K18.64 mi3.11 mi4270+3003998+2733998+2733436(Top 12%)3202(Top 20%)3202(Top 57%)
20M20.00 mi1.36 mi4099+1713837+1613837+1612738(Top 10%)2567(Top 16%)2567(Top 45%)
21M21.00 mi1.00 mi3965+1343715+1223715+1222628(Top 9%)2450(Top 15%)2450(Top 43%)
35K21.75 mi0.75 mi3908+573659+563659+563078(Top 11%)2833(Top 18%)2833(Top 50%)
23M23.00 mi1.25 mi3837+713587+723587+723270(Top 12%)2981(Top 19%)2981(Top 53%)
24M24.00 mi1.00 mi3777+603527+603527+603153(Top 11%)2849(Top 18%)2849(Top 50%)
40K24.85 mi0.85 mi3699+783453+743453+742701(Top 10%)2458(Top 15%)2458(Top 44%)
25.2M25.20 mi0.35 mi3669+303423+303423+303402(Top 12%)2992(Top 19%)2992(Top 53%)
Finish26.22 mi1.02 mi3586+833343+803343+802803(Top 10%)2510(Top 16%)2510(Top 44%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 18%
×21story building
+97ft-345ft

Overall

5077

Males

4712

M18-39

4712

5K→10K

3.1 - 6.2 mi

Top 16%
×5story building
+79ft-138ft

Overall

4467

Males

4186

M18-39

4186

10K→15K

6.2 - 9.3 mi

Top 18%
×3story building
+67ft-78ft

Overall

5077

Males

4712

M18-39

4712

15K→20K

9.3 - 12.4 mi

Top 15%
×5story building
+106ft-86ft

Overall

4252

Males

3980

M18-39

3980

20K→Half

12.4 - 13.1 mi

Top 15%
×2story building
+19ft-37ft

Overall

4396

Males

4118

M18-39

4118

Half→25K

13.1 - 15.5 mi

Top 15%
×4story building
+66ft-88ft

Overall

4163

Males

3875

M18-39

3875

25K→30K

15.5 - 18.6 mi

Top 12%
×9story building
+181ft-148ft

Overall

3436

Males

3202

M18-39

3202

30K→20M

18.6 - 20.0 mi

Top 10%
×5story building
+64ft-50ft

Overall

2738

Males

2567

M18-39

2567

20M→21M

20.0 - 21.0 mi

Top 9%
×8story building
+106ft-24ft

Overall

2628

Males

2450

M18-39

2450

21M→35K

21.0 - 21.8 mi

Top 11%
×7story building
+17ft-86ft

Overall

3078

Males

2833

M18-39

2833

35K→23M

21.8 - 23.0 mi

Top 12%
×5story building
+23ft-63ft

Overall

3270

Males

2981

M18-39

2981

23M→24M

23.0 - 24.0 mi

Top 11%
×6story building
+12ft-82ft

Overall

3153

Males

2849

M18-39

2849

24M→40K

24.0 - 24.9 mi

Top 10%
×1story
+6ft-20ft

Overall

2701

Males

2458

M18-39

2458

40K→25.2M

24.9 - 25.2 mi

Top 12%
×1story
+13ft-16ft

Overall

3402

Males

2992

M18-39

2992

25.2M→Finish

25.2 - 26.2 mi

Top 10%
×2story building
+22ft-21ft

Overall

2803

Males

2510

M18-39

2510

Passing Analysis

Category:
Athletes Passed
2295
Passed By
341
Net Change
+1954
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5540
5K → 10K60230+572#5540#4968
10K → 15K124110+14#4968#4954
15K → 20K24337+206#4954#4748
20K → Half359+26#4748#4722
Half → 25K18230+152#4722#4570
25K → 30K32121+300#4570#4270
30K → 20M1776+171#4270#4099
20M → 21M1428+134#4099#3965
21M → 35K658+57#3965#3908
35K → 23M9726+71#3908#3837
23M → 24M8222+60#3837#3777
24M → 40K879+78#3777#3699
40K → 25.2M4313+30#3699#3669
25.2M → Finish9512+83#3669#3586
TOTALS2295341+1954
📊

Passing Visuals

Category:
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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