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BOSTON MARATHON 2025

Sandra Hermosillo

Bib: 21418•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F50-54)
#0 / 1303
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
9:02/mi
28:04
↑ 97↓ 3451.5%
10K· 6.21 mi
8:39/mi
54:55
↑ 79↓ 1380.4%
15K· 9.32 mi
8:46/mi
1:22:08
↑ 67↓ 78
20K· 12.43 mi
8:52/mi
1:49:40
↑ 106↓ 860.1%
Half· 13.11 mi
8:46/mi
1:55:39
↑ 19↓ 370.5%
25K· 15.53 mi
8:53/mi
2:17:11
↑ 66↓ 880.2%
30K· 18.64 mi
9:17/mi
2:46:00
↑ 181↓ 1480.2%
20M
9:19/mi
2:58:40
↑ 64↓ 500.2%
21M
9:45/mi
3:08:25
↑ 106↓ 241.6%
35K· 21.75 mi
9:12/mi
3:15:18
↑ 17↓ 861.7%
23M
9:10/mi
3:26:47
↑ 23↓ 630.6%
24M
9:06/mi
3:35:53
↓ 821.3%
40K· 24.85 mi
9:18/mi
3:43:50
↓ 200.3%
25.2M
10:09/mi
3:47:20
↑ 13↓ 160.2%
Finish· 26.22 mi
9:19/mi
3:56:50
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:55:39
Pace8:49 /mi
2nd Half
Distance13.11 mi
Time2:01:11
Pace9:15 /mi
📊Positive Split: 4.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:29:2328:049:0228:04
9:02
-
10K
6.21 mi11:56:1454:558:5026:51
8:39
-0:23
15K
9.32 mi12:23:271:22:088:4927:13
8:46
+0:07
20K
12.43 mi12:50:591:49:408:4927:32
8:52
+0:06
Half
13.11 mi12:56:581:55:398:495:59
8:46
-0:06
25K
15.53 mi13:18:302:17:118:5021:32
8:53
+0:07
30K
18.64 mi13:47:192:46:008:5428:49
9:17
+0:24
20M
20.00 mi13:59:592:58:408:5612:40
9:19
+0:02
21M
21.00 mi14:09:443:08:258:589:45
9:45
+0:26
35K
21.75 mi14:16:373:15:188:596:53
9:12
-0:33
23M
23.00 mi14:28:063:26:478:5911:29
9:10
-0:02
24M
24.00 mi14:37:123:35:539:009:06
9:06
-0:04
40K
24.85 mi14:45:093:43:509:007:57
9:18
+0:12
25.2M
25.20 mi14:48:393:47:209:013:30
10:09
+0:51
Finish
26.22 mi14:58:093:56:509:029:30
9:19
-0:50

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

8:39 /mi

Average Pace

9:02 /mi

Slowest Pace

10:09 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:43:35

94% of race

Time at Steady Pace

13:15

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:02 /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 mi11:29:2328:049:0228:04
9:02
#22568
10K
6.21 mi11:56:1454:558:5026:51
8:39
#21652
15K
9.32 mi12:23:271:22:088:4927:13
8:46
#21336
20K
12.43 mi12:50:591:49:408:4927:32
8:52
#21045
Half
13.11 mi12:56:581:55:398:495:59
8:46
#21038
25K
15.53 mi13:18:302:17:118:5021:32
8:53
#20768
30K
18.64 mi13:47:192:46:008:5428:49
9:17
#20393
20M
20.00 mi13:59:592:58:408:5612:40
9:19
#20231
21M
21.00 mi14:09:443:08:258:589:45
9:45
#20046
35K
21.75 mi14:16:373:15:188:596:53
9:12
#20021
23M
23.00 mi14:28:063:26:478:5911:29
9:10
#19862
24M
24.00 mi14:37:123:35:539:009:06
9:06
#19772
40K
24.85 mi14:45:093:43:509:007:57
9:18
#19711
25.2M
25.20 mi14:48:393:47:209:013:30
10:09
#19679
Finish
26.22 mi14:58:093:56:509:029:30
9:19
#19713
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi225688943894320820(Top 73%)7897(Top 65%)7897(Top 606%)
10K6.21 mi3.10 mi21652+9168415+5288415+52820572(Top 72%)7785(Top 64%)7785(Top 597%)
15K9.32 mi3.11 mi21336+3168214+2018214+20120820(Top 73%)7897(Top 65%)7897(Top 606%)
20K12.43 mi3.11 mi21045+2918055+1598055+15920289(Top 71%)7641(Top 62%)7641(Top 586%)
Half13.11 mi0.68 mi21038+78051+48051+420791(Top 73%)7917(Top 65%)7917(Top 608%)
25K15.53 mi2.42 mi20768+2707913+1387913+13819359(Top 68%)7182(Top 59%)7182(Top 551%)
30K18.64 mi3.11 mi20393+3757759+1547759+15419003(Top 67%)7125(Top 58%)7125(Top 547%)
20M20.00 mi1.36 mi20231+1627684+757684+7518410(Top 65%)6959(Top 57%)6959(Top 534%)
21M21.00 mi1.00 mi20046+1857600+847600+8417290(Top 61%)6430(Top 53%)6430(Top 493%)
35K21.75 mi0.75 mi20021+257604-47604-419197(Top 68%)7557(Top 62%)7557(Top 580%)
23M23.00 mi1.25 mi19862+1597544+607544+6017220(Top 61%)6573(Top 54%)6573(Top 504%)
24M24.00 mi1.00 mi19772+907520+247520+2417922(Top 63%)6999(Top 57%)6999(Top 537%)
40K24.85 mi0.85 mi19711+617500+207500+2017877(Top 63%)7076(Top 58%)7076(Top 543%)
25.2M25.20 mi0.35 mi19679+327494+67494+617754(Top 63%)7006(Top 57%)7006(Top 538%)
Finish26.22 mi1.02 mi19713-347525-317525-3120486(Top 72%)8384(Top 69%)8384(Top 643%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 73%
×21story building
+97ft-345ft

Overall

20820

Females

7897

F50-54

7897

5K→10K

3.1 - 6.2 mi

Top 72%
×5story building
+79ft-138ft

Overall

20572

Females

7785

F50-54

7785

10K→15K

6.2 - 9.3 mi

Top 73%
×3story building
+67ft-78ft

Overall

20820

Females

7897

F50-54

7897

15K→20K

9.3 - 12.4 mi

Top 71%
×5story building
+106ft-86ft

Overall

20289

Females

7641

F50-54

7641

20K→Half

12.4 - 13.1 mi

Top 73%
×2story building
+19ft-37ft

Overall

20791

Females

7917

F50-54

7917

Half→25K

13.1 - 15.5 mi

Top 68%
×4story building
+66ft-88ft

Overall

19359

Females

7182

F50-54

7182

25K→30K

15.5 - 18.6 mi

Top 67%
×9story building
+181ft-148ft

Overall

19003

Females

7125

F50-54

7125

30K→20M

18.6 - 20.0 mi

Top 65%
×5story building
+64ft-50ft

Overall

18410

Females

6959

F50-54

6959

20M→21M

20.0 - 21.0 mi

Top 61%
×8story building
+106ft-24ft

Overall

17290

Females

6430

F50-54

6430

21M→35K

21.0 - 21.8 mi

Top 68%
×7story building
+17ft-86ft

Overall

19197

Females

7557

F50-54

7557

35K→23M

21.8 - 23.0 mi

Top 61%
×5story building
+23ft-63ft

Overall

17220

Females

6573

F50-54

6573

23M→24M

23.0 - 24.0 mi

Top 63%
×6story building
+12ft-82ft

Overall

17922

Females

6999

F50-54

6999

24M→40K

24.0 - 24.9 mi

Top 63%
×1story
+6ft-20ft

Overall

17877

Females

7076

F50-54

7076

40K→25.2M

24.9 - 25.2 mi

Top 63%
×1story
+13ft-16ft

Overall

17754

Females

7006

F50-54

7006

25.2M→Finish

25.2 - 26.2 mi

Top 72%
×2story building
+22ft-21ft

Overall

20486

Females

8384

F50-54

8384

Passing Analysis

Category:
Athletes Passed
3359
Passed By
504
Net Change
+2855
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22568
5K → 10K95135+916#22568#21652
10K → 15K40387+316#21652#21336
15K → 20K34857+291#21336#21045
20K → Half3528+7#21045#21038
Half → 25K29323+270#21038#20768
25K → 30K42449+375#20768#20393
30K → 20M18725+162#20393#20231
20M → 21M1938+185#20231#20046
21M → 35K6338+25#20046#20021
35K → 23M17213+159#20021#19862
23M → 24M12131+90#19862#19772
24M → 40K8423+61#19772#19711
40K → 25.2M4311+32#19711#19679
25.2M → Finish4276-34#19679#19713
TOTALS3359504+2855
📊

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