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BOSTON MARATHON 2025

Claudia Alvarez

Bib: 31669•F

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Division (F18-39)
#0 / 5469
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
8:30/mi
26:23
↑ 97↓ 3451.5%
10K· 6.21 mi
8:28/mi
52:40
↑ 79↓ 1380.4%
15K· 9.32 mi
8:40/mi
1:19:36
↑ 67↓ 78
20K· 12.43 mi
9:00/mi
1:47:34
↑ 106↓ 860.1%
Half· 13.11 mi
8:54/mi
1:53:38
↑ 19↓ 370.5%
25K· 15.53 mi
9:13/mi
2:15:59
↑ 66↓ 880.2%
30K· 18.64 mi
9:51/mi
2:46:34
↑ 181↓ 1480.2%
20M
9:43/mi
2:59:46
↑ 64↓ 500.2%
21M
10:18/mi
3:10:04
↑ 106↓ 241.6%
35K· 21.75 mi
9:27/mi
3:17:08
↑ 17↓ 861.7%
23M
9:29/mi
3:29:00
↑ 23↓ 630.6%
24M
9:37/mi
3:38:37
↓ 821.3%
40K· 24.85 mi
9:28/mi
3:46:43
↓ 200.3%
25.2M
10:15/mi
3:50:15
↑ 13↓ 160.2%
Finish· 26.22 mi
8:51/mi
3:59:16
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:53:38
Pace8:40 /mi
2nd Half
Distance13.11 mi
Time2:05:38
Pace9:35 /mi
📊Positive Split: 10.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:52:1426:238:3026:23
8:30
-
10K
6.21 mi12:18:3152:408:2926:17
8:28
-0:02
15K
9.32 mi12:45:271:19:368:3226:56
8:40
+0:12
20K
12.43 mi13:13:251:47:348:3927:58
9:00
+0:20
Half
13.11 mi13:19:291:53:388:406:04
8:54
-0:06
25K
15.53 mi13:41:502:15:598:4522:21
9:13
+0:19
30K
18.64 mi14:12:252:46:348:5630:35
9:51
+0:38
20M
20.00 mi14:25:372:59:468:5913:12
9:43
-0:08
21M
21.00 mi14:35:553:10:049:0310:18
10:18
+0:35
35K
21.75 mi14:42:593:17:089:047:04
9:27
-0:51
23M
23.00 mi14:54:513:29:009:0511:52
9:29
+0:02
24M
24.00 mi15:04:283:38:379:079:37
9:37
+0:08
40K
24.85 mi15:12:343:46:439:078:06
9:28
-0:09
25.2M
25.20 mi15:16:063:50:159:083:32
10:15
+0:47
Finish
26.22 mi15:25:073:59:169:089:01
8:51
-1:24

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

8:28 /mi

Average Pace

9:08 /mi

Slowest Pace

10:18 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:02:39

51% of race

Time at Steady Pace

1:12:12

30% of race

Time at Slower Pace

44:25

19% of race

Average Pace: 9:08 /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 mi11:52:1426:238:3026:23
8:30
#19843
10K
6.21 mi12:18:3152:408:2926:17
8:28
#19691
15K
9.32 mi12:45:271:19:368:3226:56
8:40
#19924
20K
12.43 mi13:13:251:47:348:3927:58
9:00
#20163
Half
13.11 mi13:19:291:53:388:406:04
8:54
#20232
25K
15.53 mi13:41:502:15:598:4522:21
9:13
#20379
30K
18.64 mi14:12:252:46:348:5630:35
9:51
#20551
20M
20.00 mi14:25:372:59:468:5913:12
9:43
#20499
21M
21.00 mi14:35:553:10:049:0310:18
10:18
#20437
35K
21.75 mi14:42:593:17:089:047:04
9:27
#20428
23M
23.00 mi14:54:513:29:009:0511:52
9:29
#20313
24M
24.00 mi15:04:283:38:379:079:37
9:37
#20336
40K
24.85 mi15:12:343:46:439:078:06
9:28
#20283
25.2M
25.20 mi15:16:063:50:159:083:32
10:15
#20254
Finish
26.22 mi15:25:073:59:169:089:01
8:51
#20215
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi198437418741820309(Top 72%)7604(Top 62%)7604(Top 139%)
10K6.21 mi3.10 mi19691+1527298+1207298+12019584(Top 69%)7226(Top 59%)7226(Top 132%)
15K9.32 mi3.11 mi19924-2337425-1277425-12720309(Top 72%)7604(Top 62%)7604(Top 139%)
20K12.43 mi3.11 mi20163-2397567-1427567-14220983(Top 74%)8046(Top 66%)8046(Top 147%)
Half13.11 mi0.68 mi20232-697617-507617-5021377(Top 75%)8238(Top 67%)8238(Top 151%)
25K15.53 mi2.42 mi20379-1477703-867703-8620842(Top 73%)7999(Top 65%)7999(Top 146%)
30K18.64 mi3.11 mi20551-1727837-1347837-13421139(Top 74%)8308(Top 68%)8308(Top 152%)
20M20.00 mi1.36 mi20499+527827+107827+1019997(Top 70%)7787(Top 64%)7787(Top 142%)
21M21.00 mi1.00 mi20437+627819+87819+819392(Top 68%)7552(Top 62%)7552(Top 138%)
35K21.75 mi0.75 mi20428+97827-87827-820158(Top 71%)8061(Top 66%)8061(Top 147%)
23M23.00 mi1.25 mi20313+1157793+347793+3418609(Top 66%)7302(Top 60%)7302(Top 134%)
24M24.00 mi1.00 mi20336-237817-247817-2420073(Top 71%)8122(Top 66%)8122(Top 149%)
40K24.85 mi0.85 mi20283+537813+47813+418634(Top 66%)7450(Top 61%)7450(Top 136%)
25.2M25.20 mi0.35 mi20254+297801+127801+1218156(Top 64%)7231(Top 59%)7231(Top 132%)
Finish26.22 mi1.02 mi20215+397788+137788+1318316(Top 64%)7254(Top 59%)7254(Top 133%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 72%
×21story building
+97ft-345ft

Overall

20309

Females

7604

F18-39

7604

5K→10K

3.1 - 6.2 mi

Top 69%
×5story building
+79ft-138ft

Overall

19584

Females

7226

F18-39

7226

10K→15K

6.2 - 9.3 mi

Top 72%
×3story building
+67ft-78ft

Overall

20309

Females

7604

F18-39

7604

15K→20K

9.3 - 12.4 mi

Top 74%
×5story building
+106ft-86ft

Overall

20983

Females

8046

F18-39

8046

20K→Half

12.4 - 13.1 mi

Top 75%
×2story building
+19ft-37ft

Overall

21377

Females

8238

F18-39

8238

Half→25K

13.1 - 15.5 mi

Top 73%
×4story building
+66ft-88ft

Overall

20842

Females

7999

F18-39

7999

25K→30K

15.5 - 18.6 mi

Top 74%
×9story building
+181ft-148ft

Overall

21139

Females

8308

F18-39

8308

30K→20M

18.6 - 20.0 mi

Top 70%
×5story building
+64ft-50ft

Overall

19997

Females

7787

F18-39

7787

20M→21M

20.0 - 21.0 mi

Top 68%
×8story building
+106ft-24ft

Overall

19392

Females

7552

F18-39

7552

21M→35K

21.0 - 21.8 mi

Top 71%
×7story building
+17ft-86ft

Overall

20158

Females

8061

F18-39

8061

35K→23M

21.8 - 23.0 mi

Top 66%
×5story building
+23ft-63ft

Overall

18609

Females

7302

F18-39

7302

23M→24M

23.0 - 24.0 mi

Top 71%
×6story building
+12ft-82ft

Overall

20073

Females

8122

F18-39

8122

24M→40K

24.0 - 24.9 mi

Top 66%
×1story
+6ft-20ft

Overall

18634

Females

7450

F18-39

7450

40K→25.2M

24.9 - 25.2 mi

Top 64%
×1story
+13ft-16ft

Overall

18156

Females

7231

F18-39

7231

25.2M→Finish

25.2 - 26.2 mi

Top 64%
×2story building
+22ft-21ft

Overall

18316

Females

7254

F18-39

7254

Passing Analysis

Category:
Athletes Passed
1608
Passed By
1980
Net Change
-372
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19843
5K → 10K351199+152#19843#19691
10K → 15K128361-233#19691#19924
15K → 20K114353-239#19924#20163
20K → Half1382-69#20163#20232
Half → 25K116263-147#20232#20379
25K → 30K178350-172#20379#20551
30K → 20M12674+52#20551#20499
20M → 21M11553+62#20499#20437
21M → 35K6354+9#20437#20428
35K → 23M15035+115#20428#20313
23M → 24M4770-23#20313#20336
24M → 40K8229+53#20336#20283
40K → 25.2M4011+29#20283#20254
25.2M → Finish8546+39#20254#20215
TOTALS16081980-372
📊

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