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BOSTON MARATHON 2025

Justin Carbone

Bib: 26429•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
6:37/mi
20:32
↑ 97↓ 3451.5%
10K· 6.21 mi
6:58/mi
42:12
↑ 79↓ 1380.4%
15K· 9.32 mi
7:20/mi
1:05:00
↑ 67↓ 78
20K· 12.43 mi
8:24/mi
1:31:07
↑ 106↓ 860.1%
Half· 13.11 mi
8:07/mi
1:36:39
↑ 19↓ 370.5%
25K· 15.53 mi
8:38/mi
1:57:35
↑ 66↓ 880.2%
30K· 18.64 mi
8:49/mi
2:24:58
↑ 181↓ 1480.2%
20M
9:10/mi
2:37:25
↑ 64↓ 500.2%
21M
11:12/mi
2:48:37
↑ 106↓ 241.6%
35K· 21.75 mi
9:16/mi
2:55:33
↑ 17↓ 861.7%
23M
8:59/mi
3:06:48
↑ 23↓ 630.6%
24M
8:41/mi
3:15:29
↓ 821.3%
40K· 24.85 mi
8:59/mi
3:23:10
↓ 200.3%
25.2M
9:37/mi
3:26:29
↑ 13↓ 160.2%
Finish· 26.22 mi
7:52/mi
3:34:30
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:36:39
Pace7:22 /mi
2nd Half
Distance13.11 mi
Time1:57:51
Pace8:59 /mi
📊Positive Split: 21.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:35:3720:326:3720:32
6:37
-
10K
6.21 mi11:57:1742:126:4721:40
6:58
+0:21
15K
9.32 mi12:20:051:05:006:5822:48
7:20
+0:22
20K
12.43 mi12:46:121:31:077:2026:07
8:24
+1:04
Half
13.11 mi12:51:441:36:397:225:32
8:07
-0:17
25K
15.53 mi13:12:401:57:357:3420:56
8:38
+0:31
30K
18.64 mi13:40:032:24:587:4727:23
8:49
+0:11
20M
20.00 mi13:52:302:37:257:5212:27
9:10
+0:21
21M
21.00 mi14:03:422:48:378:0211:12
11:12
+2:02
35K
21.75 mi14:10:382:55:338:046:56
9:16
-1:56
23M
23.00 mi14:21:533:06:488:0711:15
8:59
-0:17
24M
24.00 mi14:30:343:15:298:098:41
8:41
-0:18
40K
24.85 mi14:38:153:23:108:107:41
8:59
+0:18
25.2M
25.20 mi14:41:343:26:298:123:19
9:37
+0:38
Finish
26.22 mi14:49:353:34:308:118:01
7:52
-1:45

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

6:37 /mi

Average Pace

8:11 /mi

Slowest Pace

11:12 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:18:33

37% of race

Time at Steady Pace

1:54:30

53% of race

Time at Slower Pace

21:27

10% of race

Average Pace: 8:11 /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 mi11:35:3720:326:3720:32
6:37
#4691
10K
6.21 mi11:57:1742:126:4721:40
6:58
#6228
15K
9.32 mi12:20:051:05:006:5822:48
7:20
#7589
20K
12.43 mi12:46:121:31:077:2026:07
8:24
#10151
Half
13.11 mi12:51:441:36:397:225:32
8:07
#10504
25K
15.53 mi13:12:401:57:357:3420:56
8:38
#11917
30K
18.64 mi13:40:032:24:587:4727:23
8:49
#12868
20M
20.00 mi13:52:302:37:257:5212:27
9:10
#13300
21M
21.00 mi14:03:422:48:378:0211:12
11:12
#14087
35K
21.75 mi14:10:382:55:338:046:56
9:16
#14374
23M
23.00 mi14:21:533:06:488:0711:15
8:59
#14477
24M
24.00 mi14:30:343:15:298:098:41
8:41
#14514
40K
24.85 mi14:38:153:23:108:107:41
8:59
#14560
25.2M
25.20 mi14:41:343:26:298:123:19
9:37
#14552
Finish
26.22 mi14:49:353:34:308:118:01
7:52
#14420
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi46914400440010310(Top 36%)8256(Top 51%)8256(Top 146%)
10K6.21 mi3.10 mi6228-15375704-13045704-13047765(Top 27%)6824(Top 42%)6824(Top 121%)
15K9.32 mi3.11 mi7589-13616701-9976701-99710310(Top 36%)8256(Top 51%)8256(Top 146%)
20K12.43 mi3.11 mi10151-25628188-14878188-148717578(Top 62%)11430(Top 71%)11430(Top 203%)
Half13.11 mi0.68 mi10504-3538372-1848372-18416619(Top 59%)11014(Top 68%)11014(Top 195%)
25K15.53 mi2.42 mi11917-14139006-6349006-63417987(Top 63%)11511(Top 71%)11511(Top 204%)
30K18.64 mi3.11 mi12868-9519371-3659371-36516668(Top 59%)10780(Top 67%)10780(Top 191%)
20M20.00 mi1.36 mi13300-4329517-1469517-14617577(Top 62%)11064(Top 69%)11064(Top 196%)
21M21.00 mi1.00 mi14087-7879831-3149831-31421889(Top 77%)12918(Top 80%)12918(Top 229%)
35K21.75 mi0.75 mi14374-2879951-1209951-12019417(Top 68%)11684(Top 73%)11684(Top 207%)
23M23.00 mi1.25 mi14477-1039960-99960-916149(Top 57%)10138(Top 63%)10138(Top 180%)
24M24.00 mi1.00 mi14514-379949+119949+1115615(Top 55%)9874(Top 61%)9874(Top 175%)
40K24.85 mi0.85 mi14560-469939+109939+1016197(Top 57%)10001(Top 62%)10001(Top 177%)
25.2M25.20 mi0.35 mi14552+89916+239916+2315126(Top 53%)9465(Top 59%)9465(Top 168%)
Finish26.22 mi1.02 mi14420+1329829+879829+8711925(Top 42%)8006(Top 50%)8006(Top 142%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 36%
×21story building
+97ft-345ft

Overall

10310

Males

8256

M18-39

8256

5K→10K

3.1 - 6.2 mi

Top 27%
×5story building
+79ft-138ft

Overall

7765

Males

6824

M18-39

6824

10K→15K

6.2 - 9.3 mi

Top 36%
×3story building
+67ft-78ft

Overall

10310

Males

8256

M18-39

8256

15K→20K

9.3 - 12.4 mi

Top 62%
×5story building
+106ft-86ft

Overall

17578

Males

11430

M18-39

11430

20K→Half

12.4 - 13.1 mi

Top 59%
×2story building
+19ft-37ft

Overall

16619

Males

11014

M18-39

11014

Half→25K

13.1 - 15.5 mi

Top 63%
×4story building
+66ft-88ft

Overall

17987

Males

11511

M18-39

11511

25K→30K

15.5 - 18.6 mi

Top 59%
×9story building
+181ft-148ft

Overall

16668

Males

10780

M18-39

10780

30K→20M

18.6 - 20.0 mi

Top 62%
×5story building
+64ft-50ft

Overall

17577

Males

11064

M18-39

11064

20M→21M

20.0 - 21.0 mi

Top 77%
×8story building
+106ft-24ft

Overall

21889

Males

12918

M18-39

12918

21M→35K

21.0 - 21.8 mi

Top 68%
×7story building
+17ft-86ft

Overall

19417

Males

11684

M18-39

11684

35K→23M

21.8 - 23.0 mi

Top 57%
×5story building
+23ft-63ft

Overall

16149

Males

10138

M18-39

10138

23M→24M

23.0 - 24.0 mi

Top 55%
×6story building
+12ft-82ft

Overall

15615

Males

9874

M18-39

9874

24M→40K

24.0 - 24.9 mi

Top 57%
×1story
+6ft-20ft

Overall

16197

Males

10001

M18-39

10001

40K→25.2M

24.9 - 25.2 mi

Top 53%
×1story
+13ft-16ft

Overall

15126

Males

9465

M18-39

9465

25.2M→Finish

25.2 - 26.2 mi

Top 42%
×2story building
+22ft-21ft

Overall

11925

Males

8006

M18-39

8006

Passing Analysis

Category:
Athletes Passed
557
Passed By
10284
Net Change
-9729
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4691
5K → 10K91546-1537#4691#6228
10K → 15K121373-1361#6228#7589
15K → 20K42564-2562#7589#10151
20K → Half1354-353#10151#10504
Half → 25K181431-1413#10504#11917
25K → 30K661017-951#11917#12868
30K → 20M44476-432#12868#13300
20M → 21M11798-787#13300#14087
21M → 35K17304-287#14087#14374
35K → 23M80183-103#14374#14477
23M → 24M4784-37#14477#14514
24M → 40K62108-46#14514#14560
40K → 25.2M3628+8#14560#14552
25.2M → Finish15018+132#14552#14420
TOTALS55710284-9729
📊

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