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BOSTON MARATHON 2025

Sandra Sánchez Sánchez

Bib: 13478•F

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 22%
Gender (Female)
#0 / 12228
Top 6%
Division (F18-39)
#0 / 5469
Top 12%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:51
Rank: #10894
Start → 5K
22:51 | 7:21/mi
10K· 6.21 mi
44:55
Rank: #9705 (+1189)
5K → 10K
22:04 | 7:06/mi
15K· 9.32 mi
1:06:33
Rank: #8841 (+864)
10K → 15K
21:38 | 6:58/mi
20K· 12.43 mi
1:28:16
Rank: #8200 (+641)
15K → 20K
21:43 | 6:59/mi
Half· 13.11 mi
1:33:01
Rank: #8133 (+67)
20K → Half
4:45 | 6:58/mi
25K· 15.53 mi
1:49:57
Rank: #7771 (+362)
Half → 25K
16:56 | 6:59/mi
30K· 18.64 mi
2:12:15
Rank: #7321 (+450)
25K → 30K
22:18 | 7:11/mi
20M
2:22:12
Rank: #7133 (+188)
30K → 20M
9:57 | 7:19/mi
21M
2:30:04
Rank: #7032 (+101)
20M → 21M
7:52 | 7:52/mi
35K· 21.75 mi
2:35:18
Rank: #6935 (+97)
21M → 35K
5:14 | 7:00/mi
23M
2:44:21
Rank: #6716 (+219)
35K → 23M
9:03 | 7:14/mi
24M
2:51:25
Rank: #6567 (+149)
23M → 24M
7:04 | 7:04/mi
40K· 24.85 mi
2:57:37
Rank: #6467 (+100)
24M → 40K
6:12 | 7:15/mi
25.2M
3:00:16
Rank: #6408 (+59)
40K → 25.2M
2:39 | 7:41/mi
Finish· 26.22 mi
3:07:14
Rank: #6284 (+124)
25.2M → Finish
6:58 | 6:50/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:33:01
Pace7:06 /mi
2nd Half
Distance13.11 mi
Time1:34:13
Pace7:11 /mi
📊Positive Split: 1.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:4422:517:2122:51
7:21
-
10K
6.21 mi11:14:4844:557:1422:04
7:06
-0:15
15K
9.32 mi11:36:261:06:337:0821:38
6:58
-0:08
20K
12.43 mi11:58:091:28:167:0621:43
6:59
+0:01
Half
13.11 mi12:02:541:33:017:064:45
6:58
-0:01
25K
15.53 mi12:19:501:49:577:0516:56
6:59
+0:01
30K
18.64 mi12:42:082:12:157:0622:18
7:11
+0:12
20M
20.00 mi12:52:052:22:127:079:57
7:19
+0:08
21M
21.00 mi12:59:572:30:047:097:52
7:52
+0:33
35K
21.75 mi13:05:112:35:187:085:14
7:00
-0:52
23M
23.00 mi13:14:142:44:217:099:03
7:14
+0:14
24M
24.00 mi13:21:182:51:257:097:04
7:04
-0:10
40K
24.85 mi13:27:302:57:377:096:12
7:15
+0:11
25.2M
25.20 mi13:30:093:00:167:092:39
7:41
+0:26
Finish
26.22 mi13:37:073:07:147:096:58
6:50
-0:51

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

6:50 /mi

Average Pace

7:09 /mi

Slowest Pace

7:52 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:56:43

94% of race

Time at Steady Pace

10:31

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:08 /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 mi10:52:4422:517:2122:51
7:21
#10894
10K
6.21 mi11:14:4844:557:1422:04
7:06
#9705
15K
9.32 mi11:36:261:06:337:0821:38
6:58
#8841
20K
12.43 mi11:58:091:28:167:0621:43
6:59
#8200
Half
13.11 mi12:02:541:33:017:064:45
6:58
#8133
25K
15.53 mi12:19:501:49:577:0516:56
6:59
#7771
30K
18.64 mi12:42:082:12:157:0622:18
7:11
#7321
20M
20.00 mi12:52:052:22:127:079:57
7:19
#7133
21M
21.00 mi12:59:572:30:047:097:52
7:52
#7032
35K
21.75 mi13:05:112:35:187:085:14
7:00
#6935
23M
23.00 mi13:14:142:44:217:099:03
7:14
#6716
24M
24.00 mi13:21:182:51:257:097:04
7:04
#6567
40K
24.85 mi13:27:302:57:377:096:12
7:15
#6467
25.2M
25.20 mi13:30:093:00:167:092:39
7:41
#6408
Finish
26.22 mi13:37:073:07:147:096:58
6:50
#6284
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi10894222322237401(Top 26%)838(Top 7%)838(Top 15%)
10K6.21 mi3.10 mi9705+11891667+5561667+5568701(Top 31%)1258(Top 10%)1258(Top 23%)
15K9.32 mi3.11 mi8841+8641324+3431324+3437401(Top 26%)838(Top 7%)838(Top 15%)
20K12.43 mi3.11 mi8200+6411102+2221102+2226830(Top 24%)737(Top 6%)737(Top 13%)
Half13.11 mi0.68 mi8133+671080+221080+227359(Top 26%)857(Top 7%)857(Top 16%)
25K15.53 mi2.42 mi7771+362963+117963+1176251(Top 22%)658(Top 5%)658(Top 12%)
30K18.64 mi3.11 mi7321+450866+97866+975790(Top 20%)621(Top 5%)621(Top 11%)
20M20.00 mi1.36 mi7133+188837+29837+295950(Top 21%)770(Top 6%)770(Top 14%)
21M21.00 mi1.00 mi7032+101840-3840-36596(Top 23%)1140(Top 9%)1140(Top 21%)
35K21.75 mi0.75 mi6935+97824+16824+165363(Top 19%)717(Top 6%)717(Top 13%)
23M23.00 mi1.25 mi6716+219804+20804+205070(Top 18%)691(Top 6%)691(Top 13%)
24M24.00 mi1.00 mi6567+149785+19785+195059(Top 18%)743(Top 6%)743(Top 14%)
40K24.85 mi0.85 mi6467+100773+12773+125406(Top 19%)900(Top 7%)900(Top 16%)
25.2M25.20 mi0.35 mi6408+59768+5768+54340(Top 15%)662(Top 5%)662(Top 12%)
Finish26.22 mi1.02 mi6284+124757+11757+114750(Top 17%)775(Top 6%)775(Top 14%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 26%
×21stories
+97ft-345ft

Overall

7401

Females

838

F18-39

838

5K→10K

3.1 - 6.2 mi

Top 31%
×5stories
+79ft-138ft

Overall

8701

Females

1258

F18-39

1258

10K→15K

6.2 - 9.3 mi

Top 26%
×3stories
+67ft-78ft

Overall

7401

Females

838

F18-39

838

15K→20K

9.3 - 12.4 mi

Top 24%
×5stories
+106ft-86ft

Overall

6830

Females

737

F18-39

737

20K→Half

12.4 - 13.1 mi

Top 26%
×2stories
+19ft-37ft

Overall

7359

Females

857

F18-39

857

Half→25K

13.1 - 15.5 mi

Top 22%
×4stories
+66ft-88ft

Overall

6251

Females

658

F18-39

658

25K→30K

15.5 - 18.6 mi

Top 20%
×9stories
+181ft-148ft

Overall

5790

Females

621

F18-39

621

30K→20M

18.6 - 20.0 mi

Top 21%
×5stories
+64ft-50ft

Overall

5950

Females

770

F18-39

770

20M→21M

20.0 - 21.0 mi

Top 23%
×8stories
+106ft-24ft

Overall

6596

Females

1140

F18-39

1140

21M→35K

21.0 - 21.8 mi

Top 19%
×7stories
+17ft-86ft

Overall

5363

Females

717

F18-39

717

35K→23M

21.8 - 23.0 mi

Top 18%
×5stories
+23ft-63ft

Overall

5070

Females

691

F18-39

691

23M→24M

23.0 - 24.0 mi

Top 18%
×6stories
+12ft-82ft

Overall

5059

Females

743

F18-39

743

24M→40K

24.0 - 24.9 mi

Top 19%
×1story
+6ft-20ft

Overall

5406

Females

900

F18-39

900

40K→25.2M

24.9 - 25.2 mi

Top 15%
×1story
+13ft-16ft

Overall

4340

Females

662

F18-39

662

25.2M→Finish

25.2 - 26.2 mi

Top 17%
×2stories
+22ft-21ft

Overall

4750

Females

775

F18-39

775

Passing Analysis

Category:
Athletes Passed
4749*
Passed By
139
Net Change
+4610
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10894
5K → 10K1206*17+1189#10894#9705
10K → 15K8684+864#9705#8841
15K → 20K6410+641#8841#8200
20K → Half703+67#8200#8133
Half → 25K3664+362#8133#7771
25K → 30K46414+450#7771#7321
30K → 20M1968+188#7321#7133
20M → 21M13635+101#7133#7032
21M → 35K1069+97#7032#6935
35K → 23M23314+219#6935#6716
23M → 24M1567+149#6716#6567
24M → 40K11212+100#6567#6467
40K → 25.2M634+59#6467#6408
25.2M → Finish1328+124#6408#6284
TOTALS4749*139+4610

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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