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BOSTON MARATHON 2025

Jenna Castro

Bib: 8584•F

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 31%
Gender (Female)
#0 / 12228
Top 14%
Division (F18-39)
#0 / 5469
Top 25%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:35
Rank: #4835
Start → 5K
20:35 | 6:38/mi
10K· 6.21 mi
41:25
Rank: #5072 (-237)
5K → 10K
20:50 | 6:42/mi
15K· 9.32 mi
1:02:19
Rank: #5128 (-56)
10K → 15K
20:54 | 6:44/mi
20K· 12.43 mi
1:23:31
Rank: #5177 (-49)
15K → 20K
21:12 | 6:49/mi
Half· 13.11 mi
1:28:10
Rank: #5230 (-53)
20K → Half
4:39 | 6:49/mi
25K· 15.53 mi
1:44:58
Rank: #5342 (-112)
Half → 25K
16:48 | 6:56/mi
30K· 18.64 mi
2:08:37
Rank: #5984 (-642)
25K → 30K
23:39 | 7:37/mi
20M
2:20:48
Rank: #6650 (-666)
30K → 20M
12:11 | 8:58/mi
21M
2:31:11
Rank: #7383 (-733)
20M → 21M
10:23 | 10:23/mi
35K· 21.75 mi
2:38:24
Rank: #7923 (-540)
21M → 35K
7:13 | 9:39/mi
23M
2:49:47
Rank: #8473 (-550)
35K → 23M
11:23 | 9:05/mi
24M
2:57:56
Rank: #8644 (-171)
23M → 24M
8:09 | 8:09/mi
40K· 24.85 mi
3:04:59
Rank: #8738 (-94)
24M → 40K
7:03 | 8:15/mi
25.2M
3:08:01
Rank: #8757 (-19)
40K → 25.2M
3:02 | 8:48/mi
Finish· 26.22 mi
3:15:38
Rank: #8760 (-3)
25.2M → Finish
7:37 | 7:28/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:28:10
Pace6:44 /mi
2nd Half
Distance13.11 mi
Time1:47:28
Pace8:12 /mi
📊Positive Split: 21.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:45:4420:356:3820:35
6:38
-
10K
6.21 mi11:06:3441:256:4020:50
6:42
+0:04
15K
9.32 mi11:27:281:02:196:4120:54
6:44
+0:02
20K
12.43 mi11:48:401:23:316:4321:12
6:49
+0:05
Half
13.11 mi11:53:191:28:106:444:39
6:49
0:00
25K
15.53 mi12:10:071:44:586:4516:48
6:56
+0:07
30K
18.64 mi12:33:462:08:376:5423:39
7:37
+0:41
20M
20.00 mi12:45:572:20:487:0212:11
8:58
+1:21
21M
21.00 mi12:56:202:31:117:1210:23
10:23
+1:25
35K
21.75 mi13:03:332:38:247:177:13
9:39
-0:44
23M
23.00 mi13:14:562:49:477:2311:23
9:05
-0:34
24M
24.00 mi13:23:052:57:567:258:09
8:09
-0:56
40K
24.85 mi13:30:083:04:597:277:03
8:15
+0:06
25.2M
25.20 mi13:33:103:08:017:283:02
8:48
+0:33
Finish
26.22 mi13:40:473:15:387:287:37
7:28
-1:20

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

6:38 /mi

Average Pace

7:28 /mi

Slowest Pace

10:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:44:58

54% of race

Time at Steady Pace

39:25

20% of race

Time at Slower Pace

51:15

26% of race

Average Pace: 7:28 /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 mi10:45:4420:356:3820:35
6:38
#4835
10K
6.21 mi11:06:3441:256:4020:50
6:42
#5072
15K
9.32 mi11:27:281:02:196:4120:54
6:44
#5128
20K
12.43 mi11:48:401:23:316:4321:12
6:49
#5177
Half
13.11 mi11:53:191:28:106:444:39
6:49
#5230
25K
15.53 mi12:10:071:44:586:4516:48
6:56
#5342
30K
18.64 mi12:33:462:08:376:5423:39
7:37
#5984
20M
20.00 mi12:45:572:20:487:0212:11
8:58
#6650
21M
21.00 mi12:56:202:31:117:1210:23
10:23
#7383
35K
21.75 mi13:03:332:38:247:177:13
9:39
#7923
23M
23.00 mi13:14:562:49:477:2311:23
9:05
#8473
24M
24.00 mi13:23:052:57:567:258:09
8:09
#8644
40K
24.85 mi13:30:083:04:597:277:03
8:15
#8738
25.2M
25.20 mi13:33:103:08:017:283:02
8:48
#8757
Finish
26.22 mi13:40:473:15:387:287:37
7:28
#8760
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi48353023025362(Top 19%)410(Top 3%)410(Top 7%)
10K6.21 mi3.10 mi5072-237337-35337-355415(Top 19%)403(Top 3%)403(Top 7%)
15K9.32 mi3.11 mi5128-56346-9346-95362(Top 19%)410(Top 3%)410(Top 7%)
20K12.43 mi3.11 mi5177-49370-24370-245564(Top 20%)478(Top 4%)478(Top 9%)
Half13.11 mi0.68 mi5230-53375-5375-56378(Top 22%)640(Top 5%)640(Top 12%)
25K15.53 mi2.42 mi5342-112408-33408-335870(Top 21%)567(Top 5%)567(Top 10%)
30K18.64 mi3.11 mi5984-642542-134542-1348544(Top 30%)1617(Top 13%)1617(Top 30%)
20M20.00 mi1.36 mi6650-666716-174716-17416609(Top 58%)5917(Top 48%)5917(Top 108%)
21M21.00 mi1.00 mi7383-733952-236952-23619649(Top 69%)7706(Top 63%)7706(Top 141%)
35K21.75 mi0.75 mi7923-5401171-2191171-21920841(Top 73%)8411(Top 69%)8411(Top 154%)
23M23.00 mi1.25 mi8473-5501424-2531424-25316770(Top 59%)6309(Top 52%)6309(Top 115%)
24M24.00 mi1.00 mi8644-1711523-991523-9912244(Top 43%)3914(Top 32%)3914(Top 72%)
40K24.85 mi0.85 mi8738-941606-831606-8311834(Top 42%)3821(Top 31%)3821(Top 70%)
25.2M25.20 mi0.35 mi8757-191630-241630-2410630(Top 37%)3286(Top 27%)3286(Top 60%)
Finish26.22 mi1.02 mi8760-31660-301660-309024(Top 32%)2542(Top 21%)2542(Top 46%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 19%
×21stories
+97ft-345ft

Overall

5362

Females

410

F18-39

410

5K→10K

3.1 - 6.2 mi

Top 19%
×5stories
+79ft-138ft

Overall

5415

Females

403

F18-39

403

10K→15K

6.2 - 9.3 mi

Top 19%
×3stories
+67ft-78ft

Overall

5362

Females

410

F18-39

410

15K→20K

9.3 - 12.4 mi

Top 20%
×5stories
+106ft-86ft

Overall

5564

Females

478

F18-39

478

20K→Half

12.4 - 13.1 mi

Top 22%
×2stories
+19ft-37ft

Overall

6378

Females

640

F18-39

640

Half→25K

13.1 - 15.5 mi

Top 21%
×4stories
+66ft-88ft

Overall

5870

Females

567

F18-39

567

25K→30K

15.5 - 18.6 mi

Top 30%
×9stories
+181ft-148ft

Overall

8544

Females

1617

F18-39

1617

30K→20M

18.6 - 20.0 mi

Top 58%
×5stories
+64ft-50ft

Overall

16609

Females

5917

F18-39

5917

20M→21M

20.0 - 21.0 mi

Top 69%
×8stories
+106ft-24ft

Overall

19649

Females

7706

F18-39

7706

21M→35K

21.0 - 21.8 mi

Top 73%
×7stories
+17ft-86ft

Overall

20841

Females

8411

F18-39

8411

35K→23M

21.8 - 23.0 mi

Top 59%
×5stories
+23ft-63ft

Overall

16770

Females

6309

F18-39

6309

23M→24M

23.0 - 24.0 mi

Top 43%
×6stories
+12ft-82ft

Overall

12244

Females

3914

F18-39

3914

24M→40K

24.0 - 24.9 mi

Top 42%
×1story
+6ft-20ft

Overall

11834

Females

3821

F18-39

3821

40K→25.2M

24.9 - 25.2 mi

Top 37%
×1story
+13ft-16ft

Overall

10630

Females

3286

F18-39

3286

25.2M→Finish

25.2 - 26.2 mi

Top 32%
×2stories
+22ft-21ft

Overall

9024

Females

2542

F18-39

2542

Passing Analysis

Category:
Athletes Passed
717
Passed By
4642
Net Change
-3925
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4835
5K → 10K99336-237#4835#5072
10K → 15K112168-56#5072#5128
15K → 20K100149-49#5128#5177
20K → Half2174-53#5177#5230
Half → 25K79191-112#5230#5342
25K → 30K58700-642#5342#5984
30K → 20M12678-666#5984#6650
20M → 21M3736-733#6650#7383
21M → 35K5545-540#7383#7923
35K → 23M21571-550#7923#8473
23M → 24M36207-171#8473#8644
24M → 40K64158-94#8644#8738
40K → 25.2M3251-19#8738#8757
25.2M → Finish7578-3#8757#8760
TOTALS7174642-3925
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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