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BOSTON MARATHON 2025

Sarah Viadero

Bib: 30448•F

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
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
10:10/mi
31:35
↑ 97↓ 3451.5%
10K· 6.21 mi
9:54/mi
1:02:20
↑ 79↓ 1380.4%
15K· 9.32 mi
9:43/mi
1:32:30
↑ 67↓ 78
20K· 12.43 mi
9:43/mi
2:02:42
↑ 106↓ 860.1%
Half· 13.11 mi
9:27/mi
2:09:09
↑ 19↓ 370.5%
25K· 15.53 mi
10:00/mi
2:33:24
↑ 66↓ 880.2%
30K· 18.64 mi
10:10/mi
3:04:59
↑ 181↓ 1480.2%
20M
10:27/mi
3:19:11
↑ 64↓ 500.2%
21M
10:39/mi
3:29:50
↑ 106↓ 241.6%
35K· 21.75 mi
10:04/mi
3:37:22
↑ 17↓ 861.7%
23M
10:25/mi
3:50:24
↑ 23↓ 630.6%
24M
10:32/mi
4:00:56
↓ 821.3%
40K· 24.85 mi
10:29/mi
4:09:54
↓ 200.3%
25.2M
11:04/mi
4:13:43
↑ 13↓ 160.2%
Finish· 26.22 mi
9:38/mi
4:23:32
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:09:09
Pace9:51 /mi
2nd Half
Distance13.11 mi
Time2:14:23
Pace10:15 /mi
📊Positive Split: 4.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:52:1631:3510:1031:35
10:10
-
10K
6.21 mi12:23:011:02:2010:0230:45
9:54
-0:16
15K
9.32 mi12:53:111:32:309:5530:10
9:43
-0:11
20K
12.43 mi13:23:232:02:429:5230:12
9:43
0:00
Half
13.11 mi13:29:502:09:099:516:27
9:27
-0:16
25K
15.53 mi13:54:052:33:249:5224:15
10:00
+0:33
30K
18.64 mi14:25:403:04:599:5531:35
10:10
+0:10
20M
20.00 mi14:39:523:19:119:5814:12
10:27
+0:17
21M
21.00 mi14:50:313:29:5010:0010:39
10:39
+0:12
35K
21.75 mi14:58:033:37:2210:007:32
10:04
-0:35
23M
23.00 mi15:11:053:50:2410:0113:02
10:25
+0:21
24M
24.00 mi15:21:374:00:5610:0210:32
10:32
+0:07
40K
24.85 mi15:30:354:09:5410:038:58
10:29
-0:03
25.2M
25.20 mi15:34:244:13:4310:043:49
11:04
+0:35
Finish
26.22 mi15:44:134:23:3210:049:49
9:38
-1:26

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

9:27 /mi

Average Pace

10:04 /mi

Slowest Pace

11:04 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:22:20

77% of race

Time at Steady Pace

1:01:12

23% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 10:03 /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 mi11:52:1631:3510:1031:35
10:10
#25987
10K
6.21 mi12:23:011:02:2010:0230:45
9:54
#25519
15K
9.32 mi12:53:111:32:309:5530:10
9:43
#25106
20K
12.43 mi13:23:232:02:429:5230:12
9:43
#24698
Half
13.11 mi13:29:502:09:099:516:27
9:27
#24637
25K
15.53 mi13:54:052:33:249:5224:15
10:00
#24447
30K
18.64 mi14:25:403:04:599:5531:35
10:10
#24033
20M
20.00 mi14:39:523:19:119:5814:12
10:27
#23900
21M
21.00 mi14:50:313:29:5010:0010:39
10:39
#23703
35K
21.75 mi14:58:033:37:2210:007:32
10:04
#23648
23M
23.00 mi15:11:053:50:2410:0113:02
10:25
#23519
24M
24.00 mi15:21:374:00:5610:0210:32
10:32
#23476
40K
24.85 mi15:30:354:09:5410:038:58
10:29
#23414
25.2M
25.20 mi15:34:244:13:4310:043:49
11:04
#23374
Finish
26.22 mi15:44:134:23:3210:049:49
9:38
#23336
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi25987107491074924320(Top 86%)9852(Top 81%)9852(Top 180%)
10K6.21 mi3.10 mi25519+46810510+23910510+23925091(Top 88%)10284(Top 84%)10284(Top 188%)
15K9.32 mi3.11 mi25106+41310282+22810282+22824320(Top 86%)9852(Top 81%)9852(Top 180%)
20K12.43 mi3.11 mi24698+40810071+21110071+21123553(Top 83%)9453(Top 77%)9453(Top 173%)
Half13.11 mi0.68 mi24637+6110041+3010041+3023457(Top 83%)9409(Top 77%)9409(Top 172%)
25K15.53 mi2.42 mi24447+1909949+929949+9223269(Top 82%)9344(Top 76%)9344(Top 171%)
30K18.64 mi3.11 mi24033+4149747+2029747+20222108(Top 78%)8824(Top 72%)8824(Top 161%)
20M20.00 mi1.36 mi23900+1339693+549693+5422295(Top 78%)9058(Top 74%)9058(Top 166%)
21M21.00 mi1.00 mi23703+1979612+819612+8120478(Top 72%)8178(Top 67%)8178(Top 150%)
35K21.75 mi0.75 mi23648+559587+259587+2522118(Top 78%)9097(Top 74%)9097(Top 166%)
23M23.00 mi1.25 mi23519+1299538+499538+4921777(Top 77%)8961(Top 73%)8961(Top 164%)
24M24.00 mi1.00 mi23476+439525+139525+1322928(Top 81%)9600(Top 79%)9600(Top 176%)
40K24.85 mi0.85 mi23414+629510+159510+1521909(Top 77%)9154(Top 75%)9154(Top 167%)
25.2M25.20 mi0.35 mi23374+409502+89502+820909(Top 74%)8623(Top 71%)8623(Top 158%)
Finish26.22 mi1.02 mi23336+389494+89494+821690(Top 76%)9014(Top 74%)9014(Top 165%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 86%
×21story building
+97ft-345ft

Overall

24320

Females

9852

F18-39

9852

5K→10K

3.1 - 6.2 mi

Top 88%
×5story building
+79ft-138ft

Overall

25091

Females

10284

F18-39

10284

10K→15K

6.2 - 9.3 mi

Top 86%
×3story building
+67ft-78ft

Overall

24320

Females

9852

F18-39

9852

15K→20K

9.3 - 12.4 mi

Top 83%
×5story building
+106ft-86ft

Overall

23553

Females

9453

F18-39

9453

20K→Half

12.4 - 13.1 mi

Top 83%
×2story building
+19ft-37ft

Overall

23457

Females

9409

F18-39

9409

Half→25K

13.1 - 15.5 mi

Top 82%
×4story building
+66ft-88ft

Overall

23269

Females

9344

F18-39

9344

25K→30K

15.5 - 18.6 mi

Top 78%
×9story building
+181ft-148ft

Overall

22108

Females

8824

F18-39

8824

30K→20M

18.6 - 20.0 mi

Top 78%
×5story building
+64ft-50ft

Overall

22295

Females

9058

F18-39

9058

20M→21M

20.0 - 21.0 mi

Top 72%
×8story building
+106ft-24ft

Overall

20478

Females

8178

F18-39

8178

21M→35K

21.0 - 21.8 mi

Top 78%
×7story building
+17ft-86ft

Overall

22118

Females

9097

F18-39

9097

35K→23M

21.8 - 23.0 mi

Top 77%
×5story building
+23ft-63ft

Overall

21777

Females

8961

F18-39

8961

23M→24M

23.0 - 24.0 mi

Top 81%
×6story building
+12ft-82ft

Overall

22928

Females

9600

F18-39

9600

24M→40K

24.0 - 24.9 mi

Top 77%
×1story
+6ft-20ft

Overall

21909

Females

9154

F18-39

9154

40K→25.2M

24.9 - 25.2 mi

Top 74%
×1story
+13ft-16ft

Overall

20909

Females

8623

F18-39

8623

25.2M→Finish

25.2 - 26.2 mi

Top 76%
×2story building
+22ft-21ft

Overall

21690

Females

9014

F18-39

9014

Passing Analysis

Category:
Athletes Passed
2869
Passed By
218
Net Change
+2651
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25987
5K → 10K49527+468#25987#25519
10K → 15K42714+413#25519#25106
15K → 20K4179+408#25106#24698
20K → Half654+61#24698#24637
Half → 25K21626+190#24637#24447
25K → 30K42814+414#24447#24033
30K → 20M14815+133#24033#23900
20M → 21M2025+197#23900#23703
21M → 35K7318+55#23703#23648
35K → 23M14213+129#23648#23519
23M → 24M6522+43#23519#23476
24M → 40K8119+62#23476#23414
40K → 25.2M5111+40#23414#23374
25.2M → Finish5921+38#23374#23336
TOTALS2869218+2651
📊

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