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BOSTON MARATHON 2025

Daniel Castro

Bib: 31915•M

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 50%
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
8:14/mi
25:34
↑ 97↓ 3451.5%
10K· 6.21 mi
8:03/mi
50:35
↑ 79↓ 1380.4%
15K· 9.32 mi
8:01/mi
1:15:30
↑ 67↓ 78
20K· 12.43 mi
8:14/mi
1:41:04
↑ 106↓ 860.1%
Half· 13.11 mi
7:40/mi
1:46:18
↑ 19↓ 370.5%
25K· 15.53 mi
8:34/mi
2:07:04
↑ 66↓ 880.2%
30K· 18.64 mi
8:09/mi
2:32:24
↑ 181↓ 1480.2%
20M
8:22/mi
2:43:46
↑ 64↓ 500.2%
21M
8:31/mi
2:52:17
↑ 106↓ 241.6%
35K· 21.75 mi
7:57/mi
2:58:14
↑ 17↓ 861.7%
23M
8:01/mi
3:08:16
↑ 23↓ 630.6%
24M
7:54/mi
3:16:10
↓ 821.3%
40K· 24.85 mi
7:54/mi
3:22:55
↓ 200.3%
25.2M
8:22/mi
3:25:48
↑ 13↓ 160.2%
Finish· 26.22 mi
7:13/mi
3:33:09
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:46:18
Pace8:07 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:46:51
Pace8:09 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:48:1125:348:1425:34
8:14
-
10K
6.21 mi12:13:1250:358:0825:01
8:03
-0:11
15K
9.32 mi12:38:071:15:308:0624:55
8:01
-0:02
20K
12.43 mi13:03:411:41:048:0825:34
8:14
+0:13
Half
13.11 mi13:08:551:46:188:075:14
7:40
-0:34
25K
15.53 mi13:29:412:07:048:1120:46
8:34
+0:54
30K
18.64 mi13:55:012:32:248:1125:20
8:09
-0:25
20M
20.00 mi14:06:232:43:468:1111:22
8:22
+0:13
21M
21.00 mi14:14:542:52:178:128:31
8:31
+0:09
35K
21.75 mi14:20:512:58:148:125:57
7:57
-0:34
23M
23.00 mi14:30:533:08:168:1110:02
8:01
+0:04
24M
24.00 mi14:38:473:16:108:107:54
7:54
-0:07
40K
24.85 mi14:45:323:22:558:106:45
7:54
0:00
25.2M
25.20 mi14:48:253:25:488:102:53
8:22
+0:28
Finish
26.22 mi14:55:463:33:098:087:21
7:13
-1:09

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

7:13 /mi

Average Pace

8:08 /mi

Slowest Pace

8:34 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

27:14

13% of race

Time at Steady Pace

2:36:38

73% of race

Time at Slower Pace

29:17

14% of race

Average Pace: 8:08 /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 mi11:48:1125:348:1425:34
8:14
#18281
10K
6.21 mi12:13:1250:358:0825:01
8:03
#17562
15K
9.32 mi12:38:071:15:308:0624:55
8:01
#17074
20K
12.43 mi13:03:411:41:048:0825:34
8:14
#16917
Half
13.11 mi13:08:551:46:188:075:14
7:40
#16726
25K
15.53 mi13:29:412:07:048:1120:46
8:34
#16829
30K
18.64 mi13:55:012:32:248:1125:20
8:09
#16042
20M
20.00 mi14:06:232:43:468:1111:22
8:22
#15767
21M
21.00 mi14:14:542:52:178:128:31
8:31
#15425
35K
21.75 mi14:20:512:58:148:125:57
7:57
#15264
23M
23.00 mi14:30:533:08:168:1110:02
8:01
#14909
24M
24.00 mi14:38:473:16:108:107:54
7:54
#14700
40K
24.85 mi14:45:323:22:558:106:45
7:54
#14482
25.2M
25.20 mi14:48:253:25:488:102:53
8:22
#14374
Finish
26.22 mi14:55:463:33:098:087:21
7:13
#14071
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi18281117101171016183(Top 57%)10889(Top 68%)10889(Top 193%)
10K6.21 mi3.10 mi17562+71911429+28111429+28116847(Top 59%)11180(Top 69%)11180(Top 198%)
15K9.32 mi3.11 mi17074+48811264+16511264+16516183(Top 57%)10889(Top 68%)10889(Top 193%)
20K12.43 mi3.11 mi16917+15711175+8911175+8916476(Top 58%)10952(Top 68%)10952(Top 194%)
Half13.11 mi0.68 mi16726+19111100+7511100+7513133(Top 46%)9532(Top 59%)9532(Top 169%)
25K15.53 mi2.42 mi16829-10311117-1711117-1717559(Top 62%)11337(Top 70%)11337(Top 201%)
30K18.64 mi3.11 mi16042+78710748+36910748+36912476(Top 44%)8898(Top 55%)8898(Top 158%)
20M20.00 mi1.36 mi15767+27510587+16110587+16112918(Top 45%)8961(Top 56%)8961(Top 159%)
21M21.00 mi1.00 mi15425+34210412+17510412+17510577(Top 37%)7666(Top 48%)7666(Top 136%)
35K21.75 mi0.75 mi15264+16110335+7710335+7711929(Top 42%)8299(Top 52%)8299(Top 147%)
23M23.00 mi1.25 mi14909+35510156+17910156+17910120(Top 36%)7305(Top 45%)7305(Top 129%)
24M24.00 mi1.00 mi14700+20910027+12910027+12910544(Top 37%)7457(Top 46%)7457(Top 132%)
40K24.85 mi0.85 mi14482+2189904+1239904+1239430(Top 33%)6770(Top 42%)6770(Top 120%)
25.2M25.20 mi0.35 mi14374+1089839+659839+657974(Top 28%)5915(Top 37%)5915(Top 105%)
Finish26.22 mi1.02 mi14071+3039678+1619678+1617131(Top 25%)5418(Top 34%)5418(Top 96%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 57%
×21story building
+97ft-345ft

Overall

16183

Males

10889

M18-39

10889

5K→10K

3.1 - 6.2 mi

Top 59%
×5story building
+79ft-138ft

Overall

16847

Males

11180

M18-39

11180

10K→15K

6.2 - 9.3 mi

Top 57%
×3story building
+67ft-78ft

Overall

16183

Males

10889

M18-39

10889

15K→20K

9.3 - 12.4 mi

Top 58%
×5story building
+106ft-86ft

Overall

16476

Males

10952

M18-39

10952

20K→Half

12.4 - 13.1 mi

Top 46%
×2story building
+19ft-37ft

Overall

13133

Males

9532

M18-39

9532

Half→25K

13.1 - 15.5 mi

Top 62%
×4story building
+66ft-88ft

Overall

17559

Males

11337

M18-39

11337

25K→30K

15.5 - 18.6 mi

Top 44%
×9story building
+181ft-148ft

Overall

12476

Males

8898

M18-39

8898

30K→20M

18.6 - 20.0 mi

Top 45%
×5story building
+64ft-50ft

Overall

12918

Males

8961

M18-39

8961

20M→21M

20.0 - 21.0 mi

Top 37%
×8story building
+106ft-24ft

Overall

10577

Males

7666

M18-39

7666

21M→35K

21.0 - 21.8 mi

Top 42%
×7story building
+17ft-86ft

Overall

11929

Males

8299

M18-39

8299

35K→23M

21.8 - 23.0 mi

Top 36%
×5story building
+23ft-63ft

Overall

10120

Males

7305

M18-39

7305

23M→24M

23.0 - 24.0 mi

Top 37%
×6story building
+12ft-82ft

Overall

10544

Males

7457

M18-39

7457

24M→40K

24.0 - 24.9 mi

Top 33%
×1story
+6ft-20ft

Overall

9430

Males

6770

M18-39

6770

40K→25.2M

24.9 - 25.2 mi

Top 28%
×1story
+13ft-16ft

Overall

7974

Males

5915

M18-39

5915

25.2M→Finish

25.2 - 26.2 mi

Top 25%
×2story building
+22ft-21ft

Overall

7131

Males

5418

M18-39

5418

Passing Analysis

Category:
Athletes Passed
4683
Passed By
473
Net Change
+4210
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18281
5K → 10K77758+719#18281#17562
10K → 15K53446+488#17562#17074
15K → 20K264107+157#17074#16917
20K → Half1921+191#16917#16726
Half → 25K125228-103#16726#16829
25K → 30K7903+787#16829#16042
30K → 20M28914+275#16042#15767
20M → 21M3464+342#15767#15425
21M → 35K1665+161#15425#15264
35K → 23M3561+355#15264#14909
23M → 24M2123+209#14909#14700
24M → 40K2202+218#14700#14482
40K → 25.2M1080+108#14482#14374
25.2M → Finish3041+303#14374#14071
TOTALS4683473+4210
📊

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