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BOSTON MARATHON 2025

Samantha Simank

Bib: 16117•F

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0:00
0:00
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 47%
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
7:25/mi
23:01
↑ 97↓ 3451.5%
10K· 6.21 mi
7:30/mi
46:18
↑ 79↓ 1380.4%
15K· 9.32 mi
7:28/mi
1:09:31
↑ 67↓ 78
20K· 12.43 mi
7:34/mi
1:33:02
↑ 106↓ 860.1%
Half· 13.11 mi
7:37/mi
1:38:14
↑ 19↓ 370.5%
25K· 15.53 mi
7:58/mi
1:57:32
↑ 66↓ 880.2%
30K· 18.64 mi
8:27/mi
2:23:47
↑ 181↓ 1480.2%
20M
12:08/mi
2:40:16
↑ 64↓ 500.2%
21M
11:25/mi
2:51:41
↑ 106↓ 241.6%
35K· 21.75 mi
12:59/mi
3:01:24
↑ 17↓ 861.7%
23M
9:20/mi
3:13:05
↑ 23↓ 630.6%
24M
9:55/mi
3:23:00
↓ 821.3%
40K· 24.85 mi
9:10/mi
3:30:50
↓ 200.3%
25.2M
9:52/mi
3:34:14
↑ 13↓ 160.2%
Finish· 26.22 mi
8:29/mi
3:42:53
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:14
Pace7:30 /mi
2nd Half
Distance13.11 mi
Time2:04:39
Pace9:31 /mi
📊Positive Split: 26.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:57:0623:017:2523:01
7:25
-
10K
6.21 mi11:20:2346:187:2723:17
7:30
+0:05
15K
9.32 mi11:43:361:09:317:2823:13
7:28
-0:02
20K
12.43 mi12:07:071:33:027:2923:31
7:34
+0:06
Half
13.11 mi12:12:191:38:147:305:12
7:37
+0:03
25K
15.53 mi12:31:371:57:327:3419:18
7:58
+0:21
30K
18.64 mi12:57:522:23:477:4326:15
8:27
+0:29
20M
20.00 mi13:14:212:40:168:0116:29
12:08
+3:41
21M
21.00 mi13:25:462:51:418:1111:25
11:25
-0:43
35K
21.75 mi13:35:293:01:248:209:43
12:59
+1:34
23M
23.00 mi13:47:103:13:058:2411:41
9:20
-3:39
24M
24.00 mi13:57:053:23:008:289:55
9:55
+0:35
40K
24.85 mi14:04:553:30:508:297:50
9:10
-0:45
25.2M
25.20 mi14:08:193:34:148:303:24
9:52
+0:42
Finish
26.22 mi14:16:583:42:538:308:39
8:29
-1:23

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

7:25 /mi

Average Pace

8:30 /mi

Slowest Pace

12:59 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:33:02

42% of race

Time at Steady Pace

1:18:55

35% of race

Time at Slower Pace

50:56

23% of race

Average Pace: 8:30 /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 mi10:57:0623:017:2523:01
7:25
#11438
10K
6.21 mi11:20:2346:187:2723:17
7:30
#11720
15K
9.32 mi11:43:361:09:317:2823:13
7:28
#11616
20K
12.43 mi12:07:071:33:027:2923:31
7:34
#11532
Half
13.11 mi12:12:191:38:147:305:12
7:37
#11586
25K
15.53 mi12:31:371:57:327:3419:18
7:58
#11894
30K
18.64 mi12:57:522:23:477:4326:15
8:27
#12387
20M
20.00 mi13:14:212:40:168:0116:29
12:08
#14440
21M
21.00 mi13:25:462:51:418:1111:25
11:25
#15214
35K
21.75 mi13:35:293:01:248:209:43
12:59
#16242
23M
23.00 mi13:47:103:13:058:2411:41
9:20
#16302
24M
24.00 mi13:57:053:23:008:289:55
9:55
#16614
40K
24.85 mi14:04:553:30:508:297:50
9:10
#16626
25.2M
25.20 mi14:08:193:34:148:303:24
9:52
#16632
Finish
26.22 mi14:16:583:42:538:308:39
8:29
#16598
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi114382507250711556(Top 41%)2672(Top 22%)2672(Top 49%)
10K6.21 mi3.10 mi11720-2822658-1512658-15112065(Top 42%)2858(Top 23%)2858(Top 52%)
15K9.32 mi3.11 mi11616+1042632+262632+2611556(Top 41%)2672(Top 22%)2672(Top 49%)
20K12.43 mi3.11 mi11532+842632263211364(Top 40%)2668(Top 22%)2668(Top 49%)
Half13.11 mi0.68 mi11586-542655-232655-2312868(Top 45%)3447(Top 28%)3447(Top 63%)
25K15.53 mi2.42 mi11894-3082869-2142869-21413608(Top 48%)4008(Top 33%)4008(Top 73%)
30K18.64 mi3.11 mi12387-4933211-3423211-34214459(Top 51%)4617(Top 38%)4617(Top 84%)
20M20.00 mi1.36 mi14440-20534392-11814392-118125446(Top 90%)10725(Top 88%)10725(Top 196%)
21M21.00 mi1.00 mi15214-7744849-4574849-45722434(Top 79%)9205(Top 75%)9205(Top 168%)
35K21.75 mi0.75 mi16242-10285461-6125461-61226959(Top 95%)11566(Top 95%)11566(Top 211%)
23M23.00 mi1.25 mi16302-605519-585519-5817936(Top 63%)6951(Top 57%)6951(Top 127%)
24M24.00 mi1.00 mi16614-3125721-2025721-20221116(Top 74%)8661(Top 71%)8661(Top 158%)
40K24.85 mi0.85 mi16626-125769-485769-4817183(Top 60%)6678(Top 55%)6678(Top 122%)
25.2M25.20 mi0.35 mi16632-65783-145783-1416431(Top 58%)6292(Top 51%)6292(Top 115%)
Finish26.22 mi1.02 mi16598+345785-25785-216168(Top 57%)6112(Top 50%)6112(Top 112%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 41%
×21story building
+97ft-345ft

Overall

11556

Females

2672

F18-39

2672

5K→10K

3.1 - 6.2 mi

Top 42%
×5story building
+79ft-138ft

Overall

12065

Females

2858

F18-39

2858

10K→15K

6.2 - 9.3 mi

Top 41%
×3story building
+67ft-78ft

Overall

11556

Females

2672

F18-39

2672

15K→20K

9.3 - 12.4 mi

Top 40%
×5story building
+106ft-86ft

Overall

11364

Females

2668

F18-39

2668

20K→Half

12.4 - 13.1 mi

Top 45%
×2story building
+19ft-37ft

Overall

12868

Females

3447

F18-39

3447

Half→25K

13.1 - 15.5 mi

Top 48%
×4story building
+66ft-88ft

Overall

13608

Females

4008

F18-39

4008

25K→30K

15.5 - 18.6 mi

Top 51%
×9story building
+181ft-148ft

Overall

14459

Females

4617

F18-39

4617

30K→20M

18.6 - 20.0 mi

Top 90%
×5story building
+64ft-50ft

Overall

25446

Females

10725

F18-39

10725

20M→21M

20.0 - 21.0 mi

Top 79%
×8story building
+106ft-24ft

Overall

22434

Females

9205

F18-39

9205

21M→35K

21.0 - 21.8 mi

Top 95%
×7story building
+17ft-86ft

Overall

26959

Females

11566

F18-39

11566

35K→23M

21.8 - 23.0 mi

Top 63%
×5story building
+23ft-63ft

Overall

17936

Females

6951

F18-39

6951

23M→24M

23.0 - 24.0 mi

Top 74%
×6story building
+12ft-82ft

Overall

21116

Females

8661

F18-39

8661

24M→40K

24.0 - 24.9 mi

Top 60%
×1story
+6ft-20ft

Overall

17183

Females

6678

F18-39

6678

40K→25.2M

24.9 - 25.2 mi

Top 58%
×1story
+13ft-16ft

Overall

16431

Females

6292

F18-39

6292

25.2M→Finish

25.2 - 26.2 mi

Top 57%
×2story building
+22ft-21ft

Overall

16168

Females

6112

F18-39

6112

Passing Analysis

Category:
Athletes Passed
1162
Passed By
6322
Net Change
-5160
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11438
5K → 10K138420-282#11438#11720
10K → 15K230126+104#11720#11616
15K → 20K222138+84#11616#11532
20K → Half1569-54#11532#11586
Half → 25K97405-308#11586#11894
25K → 30K119612-493#11894#12387
30K → 20M92062-2053#12387#14440
20M → 21M20794-774#14440#15214
21M → 35K11029-1028#15214#16242
35K → 23M92152-60#16242#16302
23M → 24M19331-312#16302#16614
24M → 40K7587-12#16614#16626
40K → 25.2M3137-6#16626#16632
25.2M → Finish9460+34#16632#16598
TOTALS11626322-5160
📊

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