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BOSTON MARATHON 2025

Claudina Valcarlos

Bib: 17471•F

WA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 48%
Gender (Female)
#0 / 12228
Top 34%
Masters (Masters Women)
#0 / 6759
Top 20%
Division (F40-44)
#0 / 1718
Top 40%
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
7:40/mi
23:50
↑ 97↓ 3451.5%
10K· 6.21 mi
7:26/mi
46:57
↑ 79↓ 1380.4%
15K· 9.32 mi
7:34/mi
1:10:29
↑ 67↓ 78
20K· 12.43 mi
7:47/mi
1:34:40
↑ 106↓ 860.1%
Half· 13.11 mi
7:34/mi
1:39:50
↑ 19↓ 370.5%
25K· 15.53 mi
7:56/mi
1:59:05
↑ 66↓ 880.2%
30K· 18.64 mi
8:16/mi
2:24:45
↑ 181↓ 1480.2%
20M
8:28/mi
2:36:15
↑ 64↓ 500.2%
21M
8:42/mi
2:44:57
↑ 106↓ 241.6%
35K· 21.75 mi
8:04/mi
2:50:59
↑ 17↓ 861.7%
23M
8:36/mi
3:01:45
↑ 23↓ 630.6%
24M
9:43/mi
3:11:28
↓ 821.3%
40K· 24.85 mi
9:53/mi
3:19:55
↓ 200.3%
25.2M
10:06/mi
3:23:24
↑ 13↓ 160.2%
Finish· 26.22 mi
8:30/mi
3:32:04
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:50
Pace7:37 /mi
2nd Half
Distance13.11 mi
Time1:52:14
Pace8:34 /mi
📊Positive Split: 12.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:1223:507:4023:50
7:40
-
10K
6.21 mi11:37:1946:577:3323:07
7:26
-0:14
15K
9.32 mi12:00:511:10:297:3423:32
7:34
+0:08
20K
12.43 mi12:25:021:34:407:3724:11
7:47
+0:13
Half
13.11 mi12:30:121:39:507:375:10
7:34
-0:13
25K
15.53 mi12:49:271:59:057:4019:15
7:56
+0:22
30K
18.64 mi13:15:072:24:457:4625:40
8:16
+0:20
20M
20.00 mi13:26:372:36:157:4911:30
8:28
+0:12
21M
21.00 mi13:35:192:44:577:518:42
8:42
+0:14
35K
21.75 mi13:41:212:50:597:526:02
8:04
-0:38
23M
23.00 mi13:52:073:01:457:5410:46
8:36
+0:32
24M
24.00 mi14:01:503:11:287:599:43
9:43
+1:07
40K
24.85 mi14:10:173:19:558:038:27
9:53
+0:10
25.2M
25.20 mi14:13:463:23:248:043:29
10:06
+0:13
Finish
26.22 mi14:22:263:32:048:068:40
8:30
-1:36

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

7:26 /mi

Average Pace

8:06 /mi

Slowest Pace

10:06 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:39:50

47% of race

Time at Steady Pace

1:21:53

39% of race

Time at Slower Pace

30:21

14% of race

Average Pace: 8:05 /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 mi11:14:1223:507:4023:50
7:40
#13725
10K
6.21 mi11:37:1946:577:3323:07
7:26
#12640
15K
9.32 mi12:00:511:10:297:3423:32
7:34
#12529
20K
12.43 mi12:25:021:34:407:3724:11
7:47
#12643
Half
13.11 mi12:30:121:39:507:375:10
7:34
#12627
25K
15.53 mi12:49:271:59:057:4019:15
7:56
#12726
30K
18.64 mi13:15:072:24:457:4625:40
8:16
#12788
20M
20.00 mi13:26:372:36:157:4911:30
8:28
#12841
21M
21.00 mi13:35:192:44:577:518:42
8:42
#12733
35K
21.75 mi13:41:212:50:597:526:02
8:04
#12731
23M
23.00 mi13:52:073:01:457:5410:46
8:36
#12779
24M
24.00 mi14:01:503:11:287:599:43
9:43
#13229
40K
24.85 mi14:10:173:19:558:038:27
9:53
#13597
25.2M
25.20 mi14:13:463:23:248:043:29
10:06
#13670
Finish
26.22 mi14:22:263:32:048:068:40
8:30
#13772
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi137253725372512395(Top 44%)3114(Top 25%)3114(Top 181%)
10K6.21 mi3.10 mi12640+10853148+5773148+57711571(Top 41%)2604(Top 21%)2604(Top 152%)
15K9.32 mi3.11 mi12529+1113120+283120+2812395(Top 44%)3114(Top 25%)3114(Top 181%)
20K12.43 mi3.11 mi12643-1143231-1113231-11113161(Top 46%)3636(Top 30%)3636(Top 212%)
Half13.11 mi0.68 mi12627+163228+33228+312445(Top 44%)3212(Top 26%)3212(Top 187%)
25K15.53 mi2.42 mi12726-993322-943322-9413445(Top 47%)3912(Top 32%)3912(Top 228%)
30K18.64 mi3.11 mi12788-623413-913413-9113256(Top 47%)3977(Top 33%)3977(Top 231%)
20M20.00 mi1.36 mi12841-533493-803493-8013556(Top 48%)4273(Top 35%)4273(Top 249%)
21M21.00 mi1.00 mi12733+1083465+283465+2811717(Top 41%)3467(Top 28%)3467(Top 202%)
35K21.75 mi0.75 mi12731+23490-253490-2512733(Top 45%)4016(Top 33%)4016(Top 234%)
23M23.00 mi1.25 mi12779-483542-523542-5213932(Top 49%)4762(Top 39%)4762(Top 277%)
24M24.00 mi1.00 mi13229-4503828-2863828-28620442(Top 72%)8316(Top 68%)8316(Top 484%)
40K24.85 mi0.85 mi13597-3684063-2354063-23520076(Top 71%)8194(Top 67%)8194(Top 477%)
25.2M25.20 mi0.35 mi13670-734116-534116-5317466(Top 61%)6820(Top 56%)6820(Top 397%)
Finish26.22 mi1.02 mi13772-1024197-814197-8116251(Top 57%)6155(Top 50%)6155(Top 358%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 44%
×21story building
+97ft-345ft

Overall

12395

Females

3114

F40-44

3114

5K→10K

3.1 - 6.2 mi

Top 41%
×5story building
+79ft-138ft

Overall

11571

Females

2604

F40-44

2604

10K→15K

6.2 - 9.3 mi

Top 44%
×3story building
+67ft-78ft

Overall

12395

Females

3114

F40-44

3114

15K→20K

9.3 - 12.4 mi

Top 46%
×5story building
+106ft-86ft

Overall

13161

Females

3636

F40-44

3636

20K→Half

12.4 - 13.1 mi

Top 44%
×2story building
+19ft-37ft

Overall

12445

Females

3212

F40-44

3212

Half→25K

13.1 - 15.5 mi

Top 47%
×4story building
+66ft-88ft

Overall

13445

Females

3912

F40-44

3912

25K→30K

15.5 - 18.6 mi

Top 47%
×9story building
+181ft-148ft

Overall

13256

Females

3977

F40-44

3977

30K→20M

18.6 - 20.0 mi

Top 48%
×5story building
+64ft-50ft

Overall

13556

Females

4273

F40-44

4273

20M→21M

20.0 - 21.0 mi

Top 41%
×8story building
+106ft-24ft

Overall

11717

Females

3467

F40-44

3467

21M→35K

21.0 - 21.8 mi

Top 45%
×7story building
+17ft-86ft

Overall

12733

Females

4016

F40-44

4016

35K→23M

21.8 - 23.0 mi

Top 49%
×5story building
+23ft-63ft

Overall

13932

Females

4762

F40-44

4762

23M→24M

23.0 - 24.0 mi

Top 72%
×6story building
+12ft-82ft

Overall

20442

Females

8316

F40-44

8316

24M→40K

24.0 - 24.9 mi

Top 71%
×1story
+6ft-20ft

Overall

20076

Females

8194

F40-44

8194

40K→25.2M

24.9 - 25.2 mi

Top 61%
×1story
+13ft-16ft

Overall

17466

Females

6820

F40-44

6820

25.2M→Finish

25.2 - 26.2 mi

Top 57%
×2story building
+22ft-21ft

Overall

16251

Females

6155

F40-44

6155

Passing Analysis

Category:
Athletes Passed
2408
Passed By
2455
Net Change
-47
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13725
5K → 10K111328+1085#13725#12640
10K → 15K246135+111#12640#12529
15K → 20K156270-114#12529#12643
20K → Half4731+16#12643#12627
Half → 25K128227-99#12627#12726
25K → 30K209271-62#12726#12788
30K → 20M106159-53#12788#12841
20M → 21M15749+108#12841#12733
21M → 35K6462+2#12733#12731
35K → 23M91139-48#12731#12779
23M → 24M13463-450#12779#13229
24M → 40K19387-368#13229#13597
40K → 25.2M2093-73#13597#13670
25.2M → Finish39141-102#13670#13772
TOTALS24082455-47
📊

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