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BOSTON MARATHON 2025

Silvia Forero Castaneda

Bib: 18860•F

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 41%
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
7:52/mi
24:26
↑ 97↓ 3451.5%
10K· 6.21 mi
7:49/mi
48:42
↑ 79↓ 1380.4%
15K· 9.32 mi
7:56/mi
1:13:21
↑ 67↓ 78
20K· 12.43 mi
8:11/mi
1:38:46
↑ 106↓ 860.1%
Half· 13.11 mi
7:59/mi
1:44:13
↑ 19↓ 370.5%
25K· 15.53 mi
8:17/mi
2:04:19
↑ 66↓ 880.2%
30K· 18.64 mi
8:47/mi
2:31:35
↑ 181↓ 1480.2%
20M
8:38/mi
2:43:19
↑ 64↓ 500.2%
21M
9:28/mi
2:52:47
↑ 106↓ 241.6%
35K· 21.75 mi
8:39/mi
2:59:15
↑ 17↓ 861.7%
23M
8:25/mi
3:09:47
↑ 23↓ 630.6%
24M
8:55/mi
3:18:42
↓ 821.3%
40K· 24.85 mi
8:31/mi
3:25:59
↓ 200.3%
25.2M
9:46/mi
3:29:21
↑ 13↓ 160.2%
Finish· 26.22 mi
7:36/mi
3:37:06
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:13
Pace7:57 /mi
2nd Half
Distance13.11 mi
Time1:52:53
Pace8:37 /mi
📊Positive Split: 8.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:5824:267:5224:26
7:52
-
10K
6.21 mi11:42:1448:427:5024:16
7:49
-0:03
15K
9.32 mi12:06:531:13:217:5224:39
7:56
+0:07
20K
12.43 mi12:32:181:38:467:5725:25
8:11
+0:15
Half
13.11 mi12:37:451:44:137:575:27
7:59
-0:12
25K
15.53 mi12:57:512:04:198:0020:06
8:17
+0:18
30K
18.64 mi13:25:072:31:358:0827:16
8:47
+0:30
20M
20.00 mi13:36:512:43:198:1011:44
8:38
-0:09
21M
21.00 mi13:46:192:52:478:149:28
9:28
+0:50
35K
21.75 mi13:52:472:59:158:156:28
8:39
-0:49
23M
23.00 mi14:03:193:09:478:1510:32
8:25
-0:14
24M
24.00 mi14:12:143:18:428:178:55
8:55
+0:30
40K
24.85 mi14:19:313:25:598:177:17
8:31
-0:24
25.2M
25.20 mi14:22:533:29:218:183:22
9:46
+1:15
Finish
26.22 mi14:30:383:37:068:177:45
7:36
-2:10

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

7:36 /mi

Average Pace

8:17 /mi

Slowest Pace

9:46 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:26:33

40% of race

Time at Steady Pace

1:21:32

38% of race

Time at Slower Pace

49:01

23% of race

Average Pace: 8:17 /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 mi11:17:5824:267:5224:26
7:52
#15384
10K
6.21 mi11:42:1448:427:5024:16
7:49
#15130
15K
9.32 mi12:06:531:13:217:5224:39
7:56
#15238
20K
12.43 mi12:32:181:38:467:5725:25
8:11
#15530
Half
13.11 mi12:37:451:44:137:575:27
7:59
#15540
25K
15.53 mi12:57:512:04:198:0020:06
8:17
#15563
30K
18.64 mi13:25:072:31:358:0827:16
8:47
#15762
20M
20.00 mi13:36:512:43:198:1011:44
8:38
#15602
21M
21.00 mi13:46:192:52:478:149:28
9:28
#15599
35K
21.75 mi13:52:472:59:158:156:28
8:39
#15610
23M
23.00 mi14:03:193:09:478:1510:32
8:25
#15394
24M
24.00 mi14:12:143:18:428:178:55
8:55
#15465
40K
24.85 mi14:19:313:25:598:177:17
8:31
#15362
25.2M
25.20 mi14:22:533:29:218:183:22
9:46
#15363
Finish
26.22 mi14:30:383:37:068:177:45
7:36
#15159
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi153844769476915531(Top 55%)4876(Top 40%)4876(Top 89%)
10K6.21 mi3.10 mi15130+2544623+1464623+14614939(Top 53%)4498(Top 37%)4498(Top 82%)
15K9.32 mi3.11 mi15238-1084699-764699-7615531(Top 55%)4876(Top 40%)4876(Top 89%)
20K12.43 mi3.11 mi15530-2924883-1844883-18416188(Top 57%)5327(Top 44%)5327(Top 97%)
Half13.11 mi0.68 mi15540-104888-54888-515851(Top 56%)5086(Top 42%)5086(Top 93%)
25K15.53 mi2.42 mi15563-234922-344922-3415861(Top 56%)5232(Top 43%)5232(Top 96%)
30K18.64 mi3.11 mi15762-1995090-1685090-16816460(Top 58%)5715(Top 47%)5715(Top 104%)
20M20.00 mi1.36 mi15602+1605035+555035+5514655(Top 52%)4854(Top 40%)4854(Top 89%)
21M21.00 mi1.00 mi15599+35077-425077-4215939(Top 56%)5672(Top 46%)5672(Top 104%)
35K21.75 mi0.75 mi15610-115098-215098-2116336(Top 58%)5956(Top 49%)5956(Top 109%)
23M23.00 mi1.25 mi15394+2165010+885010+8812803(Top 45%)4169(Top 34%)4169(Top 76%)
24M24.00 mi1.00 mi15465-715071-615071-6116937(Top 60%)6461(Top 53%)6461(Top 118%)
40K24.85 mi0.85 mi15362+1035048+235048+2313583(Top 48%)4749(Top 39%)4749(Top 87%)
25.2M25.20 mi0.35 mi15363-15058-105058-1015948(Top 56%)6053(Top 50%)6053(Top 111%)
Finish26.22 mi1.02 mi15159+2044963+954963+9510044(Top 35%)3026(Top 25%)3026(Top 55%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 55%
×21story building
+97ft-345ft

Overall

15531

Females

4876

F18-39

4876

5K→10K

3.1 - 6.2 mi

Top 53%
×5story building
+79ft-138ft

Overall

14939

Females

4498

F18-39

4498

10K→15K

6.2 - 9.3 mi

Top 55%
×3story building
+67ft-78ft

Overall

15531

Females

4876

F18-39

4876

15K→20K

9.3 - 12.4 mi

Top 57%
×5story building
+106ft-86ft

Overall

16188

Females

5327

F18-39

5327

20K→Half

12.4 - 13.1 mi

Top 56%
×2story building
+19ft-37ft

Overall

15851

Females

5086

F18-39

5086

Half→25K

13.1 - 15.5 mi

Top 56%
×4story building
+66ft-88ft

Overall

15861

Females

5232

F18-39

5232

25K→30K

15.5 - 18.6 mi

Top 58%
×9story building
+181ft-148ft

Overall

16460

Females

5715

F18-39

5715

30K→20M

18.6 - 20.0 mi

Top 52%
×5story building
+64ft-50ft

Overall

14655

Females

4854

F18-39

4854

20M→21M

20.0 - 21.0 mi

Top 56%
×8story building
+106ft-24ft

Overall

15939

Females

5672

F18-39

5672

21M→35K

21.0 - 21.8 mi

Top 58%
×7story building
+17ft-86ft

Overall

16336

Females

5956

F18-39

5956

35K→23M

21.8 - 23.0 mi

Top 45%
×5story building
+23ft-63ft

Overall

12803

Females

4169

F18-39

4169

23M→24M

23.0 - 24.0 mi

Top 60%
×6story building
+12ft-82ft

Overall

16937

Females

6461

F18-39

6461

24M→40K

24.0 - 24.9 mi

Top 48%
×1story
+6ft-20ft

Overall

13583

Females

4749

F18-39

4749

40K→25.2M

24.9 - 25.2 mi

Top 56%
×1story
+13ft-16ft

Overall

15948

Females

6053

F18-39

6053

25.2M→Finish

25.2 - 26.2 mi

Top 35%
×2story building
+22ft-21ft

Overall

10044

Females

3026

F18-39

3026

Passing Analysis

Category:
Athletes Passed
2119
Passed By
1894
Net Change
+225
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15384
5K → 10K438184+254#15384#15130
10K → 15K177285-108#15130#15238
15K → 20K120412-292#15238#15530
20K → Half3444-10#15530#15540
Half → 25K166189-23#15540#15563
25K → 30K173372-199#15563#15762
30K → 20M20141+160#15762#15602
20M → 21M116113+3#15602#15599
21M → 35K5667-11#15599#15610
35K → 23M23014+216#15610#15394
23M → 24M47118-71#15394#15465
24M → 40K12825+103#15465#15362
40K → 25.2M2425-1#15362#15363
25.2M → Finish2095+204#15363#15159
TOTALS21191894+225
📊

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