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BOSTON MARATHON 2025

James Kenny

Bib: 31223•M

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Division (M18-39)
#0 / 5642
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
7:47/mi
24:11
↑ 97↓ 3451.5%
10K· 6.21 mi
7:27/mi
47:19
↑ 79↓ 1380.4%
15K· 9.32 mi
7:28/mi
1:10:31
↑ 67↓ 78
20K· 12.43 mi
7:28/mi
1:33:44
↑ 106↓ 860.1%
Half· 13.11 mi
7:37/mi
1:38:56
↑ 19↓ 370.5%
25K· 15.53 mi
8:16/mi
1:58:59
↑ 66↓ 880.2%
30K· 18.64 mi
9:09/mi
2:27:24
↑ 181↓ 1480.2%
20M
9:41/mi
2:40:34
↑ 64↓ 500.2%
21M
10:11/mi
2:50:45
↑ 106↓ 241.6%
35K· 21.75 mi
9:21/mi
2:57:45
↑ 17↓ 861.7%
23M
9:35/mi
3:09:45
↑ 23↓ 630.6%
24M
9:39/mi
3:19:24
↓ 821.3%
40K· 24.85 mi
12:00/mi
3:29:40
↓ 200.3%
25.2M
10:00/mi
3:33:07
↑ 13↓ 160.2%
Finish· 26.22 mi
9:09/mi
3:42:26
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:56
Pace7:33 /mi
2nd Half
Distance13.11 mi
Time2:03:30
Pace9:25 /mi
📊Positive Split: 24.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:45:1624:117:4724:11
7:47
-
10K
6.21 mi12:08:2447:197:3723:08
7:27
-0:20
15K
9.32 mi12:31:361:10:317:3423:12
7:28
+0:01
20K
12.43 mi12:54:491:33:447:3323:13
7:28
0:00
Half
13.11 mi13:00:011:38:567:335:12
7:37
+0:09
25K
15.53 mi13:20:041:58:597:4020:03
8:16
+0:39
30K
18.64 mi13:48:292:27:247:5428:25
9:09
+0:53
20M
20.00 mi14:01:392:40:348:0213:10
9:41
+0:32
21M
21.00 mi14:11:502:50:458:0810:11
10:11
+0:30
35K
21.75 mi14:18:502:57:458:107:00
9:21
-0:50
23M
23.00 mi14:30:503:09:458:1512:00
9:35
+0:14
24M
24.00 mi14:40:293:19:248:199:39
9:39
+0:04
40K
24.85 mi14:50:453:29:408:2610:16
12:00
+2:21
25.2M
25.20 mi14:54:123:33:078:273:27
10:00
-2:00
Finish
26.22 mi15:03:313:42:268:299:19
9:09
-0:51

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

7:27 /mi

Average Pace

8:29 /mi

Slowest Pace

12:00 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:58:59

53% of race

Time at Steady Pace

1:19:33

36% of race

Time at Slower Pace

23:54

11% of race

Average Pace: 8:29 /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 mi11:45:1624:117:4724:11
7:47
#14659
10K
6.21 mi12:08:2447:197:3723:08
7:27
#13167
15K
9.32 mi12:31:361:10:317:3423:12
7:28
#12557
20K
12.43 mi12:54:491:33:447:3323:13
7:28
#12015
Half
13.11 mi13:00:011:38:567:335:12
7:37
#12054
25K
15.53 mi13:20:041:58:597:4020:03
8:16
#12683
30K
18.64 mi13:48:292:27:247:5428:25
9:09
#13933
20M
20.00 mi14:01:392:40:348:0213:10
9:41
#14564
21M
21.00 mi14:11:502:50:458:0810:11
10:11
#14886
35K
21.75 mi14:18:502:57:458:107:00
9:21
#15105
23M
23.00 mi14:30:503:09:458:1512:00
9:35
#15382
24M
24.00 mi14:40:293:19:248:199:39
9:39
#15630
40K
24.85 mi14:50:453:29:408:2610:16
12:00
#16311
25.2M
25.20 mi14:54:123:33:078:273:27
10:00
#16319
Finish
26.22 mi15:03:313:42:268:299:19
9:09
#16474
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi14659102951029511484(Top 40%)8830(Top 55%)8830(Top 157%)
10K6.21 mi3.10 mi13167+14929688+6079688+60711600(Top 41%)8960(Top 56%)8960(Top 159%)
15K9.32 mi3.11 mi12557+6109388+3009388+30011484(Top 40%)8830(Top 55%)8830(Top 157%)
20K12.43 mi3.11 mi12015+5429106+2829106+28210523(Top 37%)8274(Top 51%)8274(Top 147%)
Half13.11 mi0.68 mi12054-399116-109116-1012754(Top 45%)9377(Top 58%)9377(Top 166%)
25K15.53 mi2.42 mi12683-6299354-2389354-23815712(Top 55%)10533(Top 65%)10533(Top 187%)
30K18.64 mi3.11 mi13933-12509829-4759829-47518372(Top 65%)11552(Top 72%)11552(Top 205%)
20M20.00 mi1.36 mi14564-63110074-24510074-24519887(Top 70%)12112(Top 75%)12112(Top 215%)
21M21.00 mi1.00 mi14886-32210182-10810182-10818957(Top 67%)11591(Top 72%)11591(Top 205%)
35K21.75 mi0.75 mi15105-21910263-8110263-8119766(Top 70%)11850(Top 74%)11850(Top 210%)
23M23.00 mi1.25 mi15382-27710337-7410337-7419010(Top 67%)11440(Top 71%)11440(Top 203%)
24M24.00 mi1.00 mi15630-24810417-8010417-8020173(Top 71%)11945(Top 74%)11945(Top 212%)
40K24.85 mi0.85 mi16311-68110685-26810685-26824929(Top 88%)14222(Top 88%)14222(Top 252%)
25.2M25.20 mi0.35 mi16319-810682+310682+316999(Top 60%)10364(Top 64%)10364(Top 184%)
Finish26.22 mi1.02 mi16474-15510713-3110713-3119684(Top 69%)11660(Top 72%)11660(Top 207%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 40%
×21story building
+97ft-345ft

Overall

11484

Males

8830

M18-39

8830

5K→10K

3.1 - 6.2 mi

Top 41%
×5story building
+79ft-138ft

Overall

11600

Males

8960

M18-39

8960

10K→15K

6.2 - 9.3 mi

Top 40%
×3story building
+67ft-78ft

Overall

11484

Males

8830

M18-39

8830

15K→20K

9.3 - 12.4 mi

Top 37%
×5story building
+106ft-86ft

Overall

10523

Males

8274

M18-39

8274

20K→Half

12.4 - 13.1 mi

Top 45%
×2story building
+19ft-37ft

Overall

12754

Males

9377

M18-39

9377

Half→25K

13.1 - 15.5 mi

Top 55%
×4story building
+66ft-88ft

Overall

15712

Males

10533

M18-39

10533

25K→30K

15.5 - 18.6 mi

Top 65%
×9story building
+181ft-148ft

Overall

18372

Males

11552

M18-39

11552

30K→20M

18.6 - 20.0 mi

Top 70%
×5story building
+64ft-50ft

Overall

19887

Males

12112

M18-39

12112

20M→21M

20.0 - 21.0 mi

Top 67%
×8story building
+106ft-24ft

Overall

18957

Males

11591

M18-39

11591

21M→35K

21.0 - 21.8 mi

Top 70%
×7story building
+17ft-86ft

Overall

19766

Males

11850

M18-39

11850

35K→23M

21.8 - 23.0 mi

Top 67%
×5story building
+23ft-63ft

Overall

19010

Males

11440

M18-39

11440

23M→24M

23.0 - 24.0 mi

Top 71%
×6story building
+12ft-82ft

Overall

20173

Males

11945

M18-39

11945

24M→40K

24.0 - 24.9 mi

Top 88%
×1story
+6ft-20ft

Overall

24929

Males

14222

M18-39

14222

40K→25.2M

24.9 - 25.2 mi

Top 60%
×1story
+13ft-16ft

Overall

16999

Males

10364

M18-39

10364

25.2M→Finish

25.2 - 26.2 mi

Top 69%
×2story building
+22ft-21ft

Overall

19684

Males

11660

M18-39

11660

Passing Analysis

Category:
Athletes Passed
3053
Passed By
4868
Net Change
-1815
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14659
5K → 10K150513+1492#14659#13167
10K → 15K63828+610#13167#12557
15K → 20K55412+542#12557#12015
20K → Half2160-39#12015#12054
Half → 25K49678-629#12054#12683
25K → 30K621312-1250#12683#13933
30K → 20M28659-631#13933#14564
20M → 21M39361-322#14564#14886
21M → 35K19238-219#14886#15105
35K → 23M50327-277#15105#15382
23M → 24M14262-248#15382#15630
24M → 40K9690-681#15630#16311
40K → 25.2M3139-8#16311#16319
25.2M → Finish34189-155#16319#16474
TOTALS30534868-1815
📊

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