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BOSTON MARATHON 2025

Sandra Gonzalez

Bib: 16404•F

QC

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 35%
Gender (Female)
#0 / 12228
Top 18%
Division (F18-39)
#0 / 5469
Top 32%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:08
Rank: #8857
Start → 5K
22:08 | 7:07/mi
10K· 6.21 mi
44:29
Rank: #9116 (-259)
5K → 10K
22:21 | 7:12/mi
15K· 9.32 mi
1:07:07
Rank: #9354 (-238)
10K → 15K
22:38 | 7:17/mi
20K· 12.43 mi
1:30:07
Rank: #9432 (-78)
15K → 20K
23:00 | 7:24/mi
Half· 13.11 mi
1:35:04
Rank: #9421 (+11)
20K → Half
4:57 | 7:15/mi
25K· 15.53 mi
1:53:16
Rank: #9504 (-83)
Half → 25K
18:12 | 7:30/mi
30K· 18.64 mi
2:18:14
Rank: #9835 (-331)
25K → 30K
24:58 | 8:02/mi
20M
2:29:19
Rank: #9921 (-86)
30K → 20M
11:05 | 8:09/mi
21M
2:38:02
Rank: #10047 (-126)
20M → 21M
8:43 | 8:43/mi
35K· 21.75 mi
2:44:04
Rank: #10127 (-80)
21M → 35K
6:02 | 8:04/mi
23M
2:54:08
Rank: #10110 (+17)
35K → 23M
10:04 | 8:02/mi
24M
3:02:14
Rank: #10165 (-55)
23M → 24M
8:06 | 8:06/mi
40K· 24.85 mi
3:08:56
Rank: #10092 (+73)
24M → 40K
6:42 | 7:50/mi
25.2M
3:11:50
Rank: #10051 (+41)
40K → 25.2M
2:54 | 8:25/mi
Finish· 26.22 mi
3:19:42
Rank: #10059 (-8)
25.2M → Finish
7:52 | 7:43/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:35:04
Pace7:15 /mi
2nd Half
Distance13.11 mi
Time1:44:38
Pace7:59 /mi
📊Positive Split: 10.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:55:3722:087:0722:08
7:07
-
10K
6.21 mi11:17:5844:297:1022:21
7:12
+0:05
15K
9.32 mi11:40:361:07:077:1222:38
7:17
+0:05
20K
12.43 mi12:03:361:30:077:1523:00
7:24
+0:07
Half
13.11 mi12:08:331:35:047:154:57
7:15
-0:09
25K
15.53 mi12:26:451:53:167:1718:12
7:30
+0:15
30K
18.64 mi12:51:432:18:147:2524:58
8:02
+0:32
20M
20.00 mi13:02:482:29:197:2811:05
8:09
+0:07
21M
21.00 mi13:11:312:38:027:328:43
8:43
+0:34
35K
21.75 mi13:17:332:44:047:336:02
8:04
-0:39
23M
23.00 mi13:27:372:54:087:3410:04
8:02
-0:02
24M
24.00 mi13:35:433:02:147:368:06
8:06
+0:04
40K
24.85 mi13:42:253:08:567:366:42
7:50
-0:16
25.2M
25.20 mi13:45:193:11:507:372:54
8:25
+0:35
Finish
26.22 mi13:53:113:19:427:377:52
7:43
-0:42

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

7:07 /mi

Average Pace

7:37 /mi

Slowest Pace

8:43 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:53:16

57% of race

Time at Steady Pace

49:36

25% of race

Time at Slower Pace

36:50

18% of race

Average Pace: 7:37 /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 mi10:55:3722:087:0722:08
7:07
#8857
10K
6.21 mi11:17:5844:297:1022:21
7:12
#9116
15K
9.32 mi11:40:361:07:077:1222:38
7:17
#9354
20K
12.43 mi12:03:361:30:077:1523:00
7:24
#9432
Half
13.11 mi12:08:331:35:047:154:57
7:15
#9421
25K
15.53 mi12:26:451:53:167:1718:12
7:30
#9504
30K
18.64 mi12:51:432:18:147:2524:58
8:02
#9835
20M
20.00 mi13:02:482:29:197:2811:05
8:09
#9921
21M
21.00 mi13:11:312:38:027:328:43
8:43
#10047
35K
21.75 mi13:17:332:44:047:336:02
8:04
#10127
23M
23.00 mi13:27:372:54:087:3410:04
8:02
#10110
24M
24.00 mi13:35:433:02:147:368:06
8:06
#10165
40K
24.85 mi13:42:253:08:567:366:42
7:50
#10092
25.2M
25.20 mi13:45:193:11:507:372:54
8:25
#10051
Finish
26.22 mi13:53:113:19:427:377:52
7:43
#10059
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi8857131513159897(Top 35%)1843(Top 15%)1843(Top 34%)
10K6.21 mi3.10 mi9116-2591423-1081423-1089453(Top 33%)1582(Top 13%)1582(Top 29%)
15K9.32 mi3.11 mi9354-2381541-1181541-1189897(Top 35%)1843(Top 15%)1843(Top 34%)
20K12.43 mi3.11 mi9432-781611-701611-709947(Top 35%)1936(Top 16%)1936(Top 35%)
Half13.11 mi0.68 mi9421+111615-41615-49691(Top 34%)1819(Top 15%)1819(Top 33%)
25K15.53 mi2.42 mi9504-831686-711686-7110044(Top 35%)2120(Top 17%)2120(Top 39%)
30K18.64 mi3.11 mi9835-3311885-1991885-19911648(Top 41%)3113(Top 25%)3113(Top 57%)
20M20.00 mi1.36 mi9921-861954-691954-6911514(Top 41%)3183(Top 26%)3183(Top 58%)
21M21.00 mi1.00 mi10047-1262056-1022056-10211797(Top 42%)3482(Top 28%)3482(Top 64%)
35K21.75 mi0.75 mi10127-802127-712127-7112700(Top 45%)3983(Top 33%)3983(Top 73%)
23M23.00 mi1.25 mi10110+172157-302157-3010344(Top 36%)2902(Top 24%)2902(Top 53%)
24M24.00 mi1.00 mi10165-552224-672224-6711907(Top 42%)3746(Top 31%)3746(Top 68%)
40K24.85 mi0.85 mi10092+732221+32221+39056(Top 32%)2477(Top 20%)2477(Top 45%)
25.2M25.20 mi0.35 mi10051+412220+12220+18332(Top 29%)2212(Top 18%)2212(Top 40%)
Finish26.22 mi1.02 mi10059-82249-292249-2910864(Top 38%)3385(Top 28%)3385(Top 62%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 35%
×21stories
+97ft-345ft

Overall

9897

Females

1843

F18-39

1843

5K→10K

3.1 - 6.2 mi

Top 33%
×5stories
+79ft-138ft

Overall

9453

Females

1582

F18-39

1582

10K→15K

6.2 - 9.3 mi

Top 35%
×3stories
+67ft-78ft

Overall

9897

Females

1843

F18-39

1843

15K→20K

9.3 - 12.4 mi

Top 35%
×5stories
+106ft-86ft

Overall

9947

Females

1936

F18-39

1936

20K→Half

12.4 - 13.1 mi

Top 34%
×2stories
+19ft-37ft

Overall

9691

Females

1819

F18-39

1819

Half→25K

13.1 - 15.5 mi

Top 35%
×4stories
+66ft-88ft

Overall

10044

Females

2120

F18-39

2120

25K→30K

15.5 - 18.6 mi

Top 41%
×9stories
+181ft-148ft

Overall

11648

Females

3113

F18-39

3113

30K→20M

18.6 - 20.0 mi

Top 41%
×5stories
+64ft-50ft

Overall

11514

Females

3183

F18-39

3183

20M→21M

20.0 - 21.0 mi

Top 42%
×8stories
+106ft-24ft

Overall

11797

Females

3482

F18-39

3482

21M→35K

21.0 - 21.8 mi

Top 45%
×7stories
+17ft-86ft

Overall

12700

Females

3983

F18-39

3983

35K→23M

21.8 - 23.0 mi

Top 36%
×5stories
+23ft-63ft

Overall

10344

Females

2902

F18-39

2902

23M→24M

23.0 - 24.0 mi

Top 42%
×6stories
+12ft-82ft

Overall

11907

Females

3746

F18-39

3746

24M→40K

24.0 - 24.9 mi

Top 32%
×1story
+6ft-20ft

Overall

9056

Females

2477

F18-39

2477

40K→25.2M

24.9 - 25.2 mi

Top 29%
×1story
+13ft-16ft

Overall

8332

Females

2212

F18-39

2212

25.2M→Finish

25.2 - 26.2 mi

Top 38%
×2stories
+22ft-21ft

Overall

10864

Females

3385

F18-39

3385

Passing Analysis

Category:
Athletes Passed
1295
Passed By
2491
Net Change
-1202
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8857
5K → 10K123382-259#8857#9116
10K → 15K86324-238#9116#9354
15K → 20K166244-78#9354#9432
20K → Half3423+11#9432#9421
Half → 25K133216-83#9421#9504
25K → 30K139470-331#9504#9835
30K → 20M89174-86#9835#9921
20M → 21M66190-126#9921#10047
21M → 35K44123-80#10047#10127
35K → 23M11194+17#10127#10110
23M → 24M67121-55#10110#10165
24M → 40K11239+73#10165#10092
40K → 25.2M5817+41#10092#10051
25.2M → Finish6774-8#10051#10059
TOTALS12952491-1202
📊

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