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BOSTON MARATHON 2025

Jenna Silverstein

Bib: 15998•F

CA

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
8:26/mi
26:13
↑ 97↓ 3451.5%
10K· 6.21 mi
8:12/mi
51:42
↑ 79↓ 1380.4%
15K· 9.32 mi
8:22/mi
1:17:42
↑ 67↓ 78
20K· 12.43 mi
8:21/mi
1:43:39
↑ 106↓ 860.1%
Half· 13.11 mi
8:07/mi
1:49:11
↑ 19↓ 370.5%
25K· 15.53 mi
8:17/mi
2:09:17
↑ 66↓ 880.2%
30K· 18.64 mi
8:22/mi
2:35:18
↑ 181↓ 1480.2%
20M
8:16/mi
2:46:32
↑ 64↓ 500.2%
21M
8:36/mi
2:55:08
↑ 106↓ 241.6%
35K· 21.75 mi
8:03/mi
3:01:09
↑ 17↓ 861.7%
23M
8:14/mi
3:11:27
↑ 23↓ 630.6%
24M
8:05/mi
3:19:32
↓ 821.3%
40K· 24.85 mi
8:00/mi
3:26:22
↓ 200.3%
25.2M
8:39/mi
3:29:21
↑ 13↓ 160.2%
Finish· 26.22 mi
7:43/mi
3:37:13
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:49:11
Pace8:20 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:48:02
Pace8:14 /mi
📊Negative Split: 1.1% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:59:3126:138:2626:13
8:26
-
10K
6.21 mi11:25:0051:428:1925:29
8:12
-0:14
15K
9.32 mi11:51:001:17:428:2026:00
8:22
+0:10
20K
12.43 mi12:16:571:43:398:2025:57
8:21
-0:01
Half
13.11 mi12:22:291:49:118:205:32
8:07
-0:14
25K
15.53 mi12:42:352:09:178:1920:06
8:17
+0:10
30K
18.64 mi13:08:362:35:188:2026:01
8:22
+0:05
20M
20.00 mi13:19:502:46:328:2011:14
8:16
-0:06
21M
21.00 mi13:28:262:55:088:208:36
8:36
+0:20
35K
21.75 mi13:34:273:01:098:206:01
8:03
-0:33
23M
23.00 mi13:44:453:11:278:1910:18
8:14
+0:11
24M
24.00 mi13:52:503:19:328:198:05
8:05
-0:09
40K
24.85 mi13:59:403:26:228:186:50
8:00
-0:05
25.2M
25.20 mi14:02:393:29:218:182:59
8:39
+0:39
Finish
26.22 mi14:10:313:37:138:177:52
7:43
-0:56

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

7:43 /mi

Average Pace

8:17 /mi

Slowest Pace

8:39 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:25:38

95% of race

Time at Steady Pace

11:35

5% of race

Time at Slower Pace

0:00

0% 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 mi10:59:3126:138:2626:13
8:26
#19523
10K
6.21 mi11:25:0051:428:1925:29
8:12
#18744
15K
9.32 mi11:51:001:17:428:2026:00
8:22
#18624
20K
12.43 mi12:16:571:43:398:2025:57
8:21
#18252
Half
13.11 mi12:22:291:49:118:205:32
8:07
#18151
25K
15.53 mi12:42:352:09:178:1920:06
8:17
#17729
30K
18.64 mi13:08:362:35:188:2026:01
8:22
#17026
20M
20.00 mi13:19:502:46:328:2011:14
8:16
#16682
21M
21.00 mi13:28:262:55:088:208:36
8:36
#16327
35K
21.75 mi13:34:273:01:098:206:01
8:03
#16164
23M
23.00 mi13:44:453:11:278:1910:18
8:14
#15837
24M
24.00 mi13:52:503:19:328:198:05
8:05
#15660
40K
24.85 mi13:59:403:26:228:186:50
8:00
#15457
25.2M
25.20 mi14:02:393:29:218:182:59
8:39
#15364
Finish
26.22 mi14:10:313:37:138:177:52
7:43
#15197
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi195237206720618506(Top 65%)6605(Top 54%)6605(Top 121%)
10K6.21 mi3.10 mi18744+7796760+4466760+44617912(Top 63%)6242(Top 51%)6242(Top 114%)
15K9.32 mi3.11 mi18624+1206692+686692+6818506(Top 65%)6605(Top 54%)6605(Top 121%)
20K12.43 mi3.11 mi18252+3726484+2086484+20817246(Top 61%)5909(Top 48%)5909(Top 108%)
Half13.11 mi0.68 mi18151+1016430+546430+5416700(Top 59%)5575(Top 46%)5575(Top 102%)
25K15.53 mi2.42 mi17729+4226194+2366194+23615862(Top 56%)5233(Top 43%)5233(Top 96%)
30K18.64 mi3.11 mi17026+7035834+3605834+36013999(Top 49%)4368(Top 36%)4368(Top 80%)
20M20.00 mi1.36 mi16682+3445653+1815653+18112311(Top 43%)3611(Top 30%)3611(Top 66%)
21M21.00 mi1.00 mi16327+3555481+1725481+17211144(Top 39%)3184(Top 26%)3184(Top 58%)
35K21.75 mi0.75 mi16164+1635419+625419+6212601(Top 44%)3964(Top 32%)3964(Top 72%)
23M23.00 mi1.25 mi15837+3275273+1465273+14611582(Top 41%)3537(Top 29%)3537(Top 65%)
24M24.00 mi1.00 mi15660+1775183+905183+9011841(Top 42%)3736(Top 31%)3736(Top 68%)
40K24.85 mi0.85 mi15457+2035105+785105+7810217(Top 36%)3057(Top 25%)3057(Top 56%)
25.2M25.20 mi0.35 mi15364+935059+465059+469852(Top 35%)2978(Top 24%)2978(Top 54%)
Finish26.22 mi1.02 mi15197+1674990+694990+6910892(Top 38%)3413(Top 28%)3413(Top 62%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 65%
×21story building
+97ft-345ft

Overall

18506

Females

6605

F18-39

6605

5K→10K

3.1 - 6.2 mi

Top 63%
×5story building
+79ft-138ft

Overall

17912

Females

6242

F18-39

6242

10K→15K

6.2 - 9.3 mi

Top 65%
×3story building
+67ft-78ft

Overall

18506

Females

6605

F18-39

6605

15K→20K

9.3 - 12.4 mi

Top 61%
×5story building
+106ft-86ft

Overall

17246

Females

5909

F18-39

5909

20K→Half

12.4 - 13.1 mi

Top 59%
×2story building
+19ft-37ft

Overall

16700

Females

5575

F18-39

5575

Half→25K

13.1 - 15.5 mi

Top 56%
×4story building
+66ft-88ft

Overall

15862

Females

5233

F18-39

5233

25K→30K

15.5 - 18.6 mi

Top 49%
×9story building
+181ft-148ft

Overall

13999

Females

4368

F18-39

4368

30K→20M

18.6 - 20.0 mi

Top 43%
×5story building
+64ft-50ft

Overall

12311

Females

3611

F18-39

3611

20M→21M

20.0 - 21.0 mi

Top 39%
×8story building
+106ft-24ft

Overall

11144

Females

3184

F18-39

3184

21M→35K

21.0 - 21.8 mi

Top 44%
×7story building
+17ft-86ft

Overall

12601

Females

3964

F18-39

3964

35K→23M

21.8 - 23.0 mi

Top 41%
×5story building
+23ft-63ft

Overall

11582

Females

3537

F18-39

3537

23M→24M

23.0 - 24.0 mi

Top 42%
×6story building
+12ft-82ft

Overall

11841

Females

3736

F18-39

3736

24M→40K

24.0 - 24.9 mi

Top 36%
×1story
+6ft-20ft

Overall

10217

Females

3057

F18-39

3057

40K→25.2M

24.9 - 25.2 mi

Top 35%
×1story
+13ft-16ft

Overall

9852

Females

2978

F18-39

2978

25.2M→Finish

25.2 - 26.2 mi

Top 38%
×2story building
+22ft-21ft

Overall

10892

Females

3413

F18-39

3413

Passing Analysis

Category:
Athletes Passed
4606
Passed By
280
Net Change
+4326
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19523
5K → 10K84061+779#19523#18744
10K → 15K251131+120#18744#18624
15K → 20K41240+372#18624#18252
20K → Half1054+101#18252#18151
Half → 25K43412+422#18151#17729
25K → 30K7129+703#17729#17026
30K → 20M3462+344#17026#16682
20M → 21M3561+355#16682#16327
21M → 35K1674+163#16327#16164
35K → 23M3292+327#16164#15837
23M → 24M1814+177#15837#15660
24M → 40K2041+203#15660#15457
40K → 25.2M952+93#15457#15364
25.2M → Finish1747+167#15364#15197
TOTALS4606280+4326
📊

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