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BOSTON MARATHON 2025

Kevin Day

Bib: 31088•M

MA

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
9:17/mi
28:50
↑ 97↓ 3451.5%
10K· 6.21 mi
8:52/mi
56:22
↑ 79↓ 1380.4%
15K· 9.32 mi
8:40/mi
1:23:18
↑ 67↓ 78
20K· 12.43 mi
9:07/mi
1:51:36
↑ 106↓ 860.1%
Half· 13.11 mi
9:04/mi
1:57:47
↑ 19↓ 370.5%
25K· 15.53 mi
9:33/mi
2:20:56
↑ 66↓ 880.2%
30K· 18.64 mi
12:15/mi
2:58:59
↑ 181↓ 1480.2%
20M
16:14/mi
3:21:02
↑ 64↓ 500.2%
21M
11:45/mi
3:32:47
↑ 106↓ 241.6%
35K· 21.75 mi
10:40/mi
3:40:46
↑ 17↓ 861.7%
23M
10:48/mi
3:54:17
↑ 23↓ 630.6%
24M
10:17/mi
4:04:34
↓ 821.3%
40K· 24.85 mi
10:58/mi
4:13:57
↓ 200.3%
25.2M
11:27/mi
4:17:54
↑ 13↓ 160.2%
Finish· 26.22 mi
9:22/mi
4:27:27
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:57:47
Pace8:59 /mi
2nd Half
Distance13.11 mi
Time2:29:40
Pace11:25 /mi
📊Positive Split: 27.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:51:2428:509:1728:50
9:17
-
10K
6.21 mi12:18:5656:229:0427:32
8:52
-0:25
15K
9.32 mi12:45:521:23:188:5626:56
8:40
-0:12
20K
12.43 mi13:14:101:51:368:5928:18
9:07
+0:27
Half
13.11 mi13:20:211:57:478:596:11
9:04
-0:03
25K
15.53 mi13:43:302:20:569:0423:09
9:33
+0:29
30K
18.64 mi14:21:332:58:599:3638:03
12:15
+2:42
20M
20.00 mi14:43:363:21:0210:0322:03
16:14
+3:59
21M
21.00 mi14:55:213:32:4710:0811:45
11:45
-4:29
35K
21.75 mi15:03:203:40:4610:097:59
10:40
-1:05
23M
23.00 mi15:16:513:54:1710:1113:31
10:48
+0:08
24M
24.00 mi15:27:084:04:3410:1110:17
10:17
-0:31
40K
24.85 mi15:36:314:13:5710:139:23
10:58
+0:41
25.2M
25.20 mi15:40:284:17:5410:143:57
11:27
+0:29
Finish
26.22 mi15:50:014:27:2710:129:33
9:22
-2:05

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

8:40 /mi

Average Pace

10:12 /mi

Slowest Pace

16:14 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:57:47

44% of race

Time at Steady Pace

1:13:52

28% of race

Time at Slower Pace

1:15:48

28% of race

Average Pace: 10:12 /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 mi11:51:2428:509:1728:50
9:17
#23499
10K
6.21 mi12:18:5656:229:0427:32
8:52
#22711
15K
9.32 mi12:45:521:23:188:5626:56
8:40
#22010
20K
12.43 mi13:14:101:51:368:5928:18
9:07
#21840
Half
13.11 mi13:20:211:57:478:596:11
9:04
#21846
25K
15.53 mi13:43:302:20:569:0423:09
9:33
#21905
30K
18.64 mi14:21:332:58:599:3638:03
12:15
#23094
20M
20.00 mi14:43:363:21:0210:0322:03
16:14
#24120
21M
21.00 mi14:55:213:32:4710:0811:45
11:45
#24077
35K
21.75 mi15:03:203:40:4610:097:59
10:40
#24060
23M
23.00 mi15:16:513:54:1710:1113:31
10:48
#23955
24M
24.00 mi15:27:084:04:3410:1110:17
10:17
#23887
40K
24.85 mi15:36:314:13:5710:139:23
10:58
#23860
25.2M
25.20 mi15:40:284:17:5410:143:57
11:27
#23834
Finish
26.22 mi15:50:014:27:2710:129:33
9:22
#23756
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi23499140021400220293(Top 71%)12649(Top 79%)12649(Top 224%)
10K6.21 mi3.10 mi22711+78813650+35213650+35221699(Top 76%)13221(Top 82%)13221(Top 234%)
15K9.32 mi3.11 mi22010+70113341+30913341+30920293(Top 71%)12649(Top 79%)12649(Top 224%)
20K12.43 mi3.11 mi21840+17013266+7513266+7521483(Top 76%)13121(Top 81%)13121(Top 233%)
Half13.11 mi0.68 mi21846-613269-313269-322076(Top 78%)13380(Top 83%)13380(Top 237%)
25K15.53 mi2.42 mi21905-5913293-2413293-2422024(Top 78%)13306(Top 83%)13306(Top 236%)
30K18.64 mi3.11 mi23094-118913791-49813791-49825880(Top 91%)14934(Top 93%)14934(Top 265%)
20M20.00 mi1.36 mi24120-102614234-44314234-44328213(Top 99%)15988(Top 99%)15988(Top 283%)
21M21.00 mi1.00 mi24077+4314209+2514209+2523123(Top 81%)13514(Top 84%)13514(Top 240%)
35K21.75 mi0.75 mi24060+1714186+2314186+2323515(Top 83%)13643(Top 85%)13643(Top 242%)
23M23.00 mi1.25 mi23955+10514114+7214114+7222739(Top 80%)13219(Top 82%)13219(Top 234%)
24M24.00 mi1.00 mi23887+6814076+3814076+3822190(Top 78%)12906(Top 80%)12906(Top 229%)
40K24.85 mi0.85 mi23860+2714051+2514051+2523081(Top 81%)13281(Top 82%)13281(Top 235%)
25.2M25.20 mi0.35 mi23834+2614031+2014031+2021928(Top 77%)12759(Top 79%)12759(Top 226%)
Finish26.22 mi1.02 mi23756+7813985+4613985+4620669(Top 73%)12141(Top 75%)12141(Top 215%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 71%
×21story building
+97ft-345ft

Overall

20293

Males

12649

M18-39

12649

5K→10K

3.1 - 6.2 mi

Top 76%
×5story building
+79ft-138ft

Overall

21699

Males

13221

M18-39

13221

10K→15K

6.2 - 9.3 mi

Top 71%
×3story building
+67ft-78ft

Overall

20293

Males

12649

M18-39

12649

15K→20K

9.3 - 12.4 mi

Top 76%
×5story building
+106ft-86ft

Overall

21483

Males

13121

M18-39

13121

20K→Half

12.4 - 13.1 mi

Top 78%
×2story building
+19ft-37ft

Overall

22076

Males

13380

M18-39

13380

Half→25K

13.1 - 15.5 mi

Top 78%
×4story building
+66ft-88ft

Overall

22024

Males

13306

M18-39

13306

25K→30K

15.5 - 18.6 mi

Top 91%
×9story building
+181ft-148ft

Overall

25880

Males

14934

M18-39

14934

30K→20M

18.6 - 20.0 mi

Top 99%
×5story building
+64ft-50ft

Overall

28213

Males

15988

M18-39

15988

20M→21M

20.0 - 21.0 mi

Top 81%
×8story building
+106ft-24ft

Overall

23123

Males

13514

M18-39

13514

21M→35K

21.0 - 21.8 mi

Top 83%
×7story building
+17ft-86ft

Overall

23515

Males

13643

M18-39

13643

35K→23M

21.8 - 23.0 mi

Top 80%
×5story building
+23ft-63ft

Overall

22739

Males

13219

M18-39

13219

23M→24M

23.0 - 24.0 mi

Top 78%
×6story building
+12ft-82ft

Overall

22190

Males

12906

M18-39

12906

24M→40K

24.0 - 24.9 mi

Top 81%
×1story
+6ft-20ft

Overall

23081

Males

13281

M18-39

13281

40K→25.2M

24.9 - 25.2 mi

Top 77%
×1story
+13ft-16ft

Overall

21928

Males

12759

M18-39

12759

25.2M→Finish

25.2 - 26.2 mi

Top 73%
×2story building
+22ft-21ft

Overall

20669

Males

12141

M18-39

12141

Passing Analysis

Category:
Athletes Passed
2477
Passed By
2734
Net Change
-257
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23499
5K → 10K80820+788#23499#22711
10K → 15K71615+701#22711#22010
15K → 20K26393+170#22010#21840
20K → Half3339-6#21840#21846
Half → 25K129188-59#21846#21905
25K → 30K181207-1189#21905#23094
30K → 20M71033-1026#23094#24120
20M → 21M7936+43#24120#24077
21M → 35K4730+17#24077#24060
35K → 23M11813+105#24060#23955
23M → 24M8416+68#23955#23887
24M → 40K5528+27#23887#23860
40K → 25.2M348+26#23860#23834
25.2M → Finish868+78#23834#23756
TOTALS24772734-257
📊

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