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BOSTON MARATHON 2025

Jessica Isaac

Bib: 13362•F

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0:00
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Overall
#0 / 28404
Top 49%
Gender (Female)
#0 / 12228
Top 35%
Division (F18-39)
#0 / 5469
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:36
Rank: #13098
Start → 5K
23:36 | 7:36/mi
10K· 6.21 mi
46:45
Rank: #12349 (+749)
5K → 10K
23:09 | 7:27/mi
15K· 9.32 mi
1:09:55
Rank: #12008 (+341)
10K → 15K
23:10 | 7:27/mi
20K· 12.43 mi
1:35:08
Rank: #12971 (-963)
15K → 20K
25:13 | 8:07/mi
Half· 13.11 mi
1:40:18
Rank: #12918 (+53)
20K → Half
5:10 | 7:34/mi
25K· 15.53 mi
2:00:02
Rank: #13253 (-335)
Half → 25K
19:44 | 8:08/mi
30K· 18.64 mi
2:24:51
Rank: #12826 (+427)
25K → 30K
24:49 | 7:59/mi
20M
2:38:07
Rank: #13572 (-746)
30K → 20M
13:16 | 9:46/mi
21M
2:46:43
Rank: #13381 (+191)
20M → 21M
8:36 | 8:36/mi
35K· 21.75 mi
2:52:40
Rank: #13331 (+50)
21M → 35K
5:57 | 7:57/mi
23M
3:02:58
Rank: #13194 (+137)
35K → 23M
10:18 | 8:14/mi
24M
3:11:04
Rank: #13122 (+72)
23M → 24M
8:06 | 8:06/mi
40K· 24.85 mi
3:21:41
Rank: #14155 (-1033)
24M → 40K
10:37 | 12:25/mi
25.2M
3:24:50
Rank: #14114 (+41)
40K → 25.2M
3:09 | 9:08/mi
Finish· 26.22 mi
3:32:55
Rank: #14002 (+112)
25.2M → Finish
8:05 | 7:56/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:40:18
Pace7:39 /mi
2nd Half
Distance13.11 mi
Time1:52:37
Pace8:35 /mi
📊Positive Split: 12.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:3323:367:3623:36
7:36
-
10K
6.21 mi11:16:4246:457:3123:09
7:27
-0:09
15K
9.32 mi11:39:521:09:557:3023:10
7:27
0:00
20K
12.43 mi12:05:051:35:087:3925:13
8:07
+0:40
Half
13.11 mi12:10:151:40:187:395:10
7:34
-0:33
25K
15.53 mi12:29:592:00:027:4419:44
8:08
+0:34
30K
18.64 mi12:54:482:24:517:4624:49
7:59
-0:09
20M
20.00 mi13:08:042:38:077:5413:16
9:46
+1:47
21M
21.00 mi13:16:402:46:437:568:36
8:36
-1:10
35K
21.75 mi13:22:372:52:407:565:57
7:57
-0:39
23M
23.00 mi13:32:553:02:587:5710:18
8:14
+0:17
24M
24.00 mi13:41:013:11:047:588:06
8:06
-0:08
40K
24.85 mi13:51:383:21:418:0710:37
12:25
+4:19
25.2M
25.20 mi13:54:473:24:508:083:09
9:08
-3:17
Finish
26.22 mi14:02:523:32:558:088:05
7:56
-1:12

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

7:27 /mi

Average Pace

8:08 /mi

Slowest Pace

12:25 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

46:19

22% of race

Time at Steady Pace

2:19:34

66% of race

Time at Slower Pace

27:02

13% of race

Average Pace: 8:07 /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 mi10:53:3323:367:3623:36
7:36
#13098
10K
6.21 mi11:16:4246:457:3123:09
7:27
#12349
15K
9.32 mi11:39:521:09:557:3023:10
7:27
#12008
20K
12.43 mi12:05:051:35:087:3925:13
8:07
#12971
Half
13.11 mi12:10:151:40:187:395:10
7:34
#12918
25K
15.53 mi12:29:592:00:027:4419:44
8:08
#13253
30K
18.64 mi12:54:482:24:517:4624:49
7:59
#12826
20M
20.00 mi13:08:042:38:077:5413:16
9:46
#13572
21M
21.00 mi13:16:402:46:437:568:36
8:36
#13381
35K
21.75 mi13:22:372:52:407:565:57
7:57
#13331
23M
23.00 mi13:32:553:02:587:5710:18
8:14
#13194
24M
24.00 mi13:41:013:11:047:588:06
8:06
#13122
40K
24.85 mi13:51:383:21:418:0710:37
12:25
#14155
25.2M
25.20 mi13:54:473:24:508:083:09
9:08
#14114
Finish
26.22 mi14:02:523:32:558:088:05
7:56
#14002
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi130983377337711406(Top 40%)2589(Top 21%)2589(Top 47%)
10K6.21 mi3.10 mi12349+7492990+3872990+38711662(Top 41%)2649(Top 22%)2649(Top 48%)
15K9.32 mi3.11 mi12008+3412843+1472843+14711406(Top 40%)2589(Top 21%)2589(Top 47%)
20K12.43 mi3.11 mi12971-9633429-5863429-58615749(Top 55%)5058(Top 41%)5058(Top 92%)
Half13.11 mi0.68 mi12918+533404+253404+2512449(Top 44%)3216(Top 26%)3216(Top 59%)
25K15.53 mi2.42 mi13253-3353631-2273631-22714908(Top 52%)4696(Top 38%)4696(Top 86%)
30K18.64 mi3.11 mi12826+4273442+1893442+18911306(Top 40%)2938(Top 24%)2938(Top 54%)
20M20.00 mi1.36 mi13572-7463892-4503892-45020168(Top 71%)7888(Top 65%)7888(Top 144%)
21M21.00 mi1.00 mi13381+1913822+703822+7011139(Top 39%)3179(Top 26%)3179(Top 58%)
35K21.75 mi0.75 mi13331+503817+53817+511999(Top 42%)3656(Top 30%)3656(Top 67%)
23M23.00 mi1.25 mi13194+1373785+323785+3211569(Top 41%)3524(Top 29%)3524(Top 64%)
24M24.00 mi1.00 mi13122+723776+93776+911938(Top 42%)3777(Top 31%)3777(Top 69%)
40K24.85 mi0.85 mi14155-10334364-5884364-58825563(Top 90%)10934(Top 89%)10934(Top 200%)
25.2M25.20 mi0.35 mi14114+414354+104354+1012627(Top 44%)4306(Top 35%)4306(Top 79%)
Finish26.22 mi1.02 mi14002+1124320+344320+3412454(Top 44%)4162(Top 34%)4162(Top 76%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 40%
×21stories
+97ft-345ft

Overall

11406

Females

2589

F18-39

2589

5K→10K

3.1 - 6.2 mi

Top 41%
×5stories
+79ft-138ft

Overall

11662

Females

2649

F18-39

2649

10K→15K

6.2 - 9.3 mi

Top 40%
×3stories
+67ft-78ft

Overall

11406

Females

2589

F18-39

2589

15K→20K

9.3 - 12.4 mi

Top 55%
×5stories
+106ft-86ft

Overall

15749

Females

5058

F18-39

5058

20K→Half

12.4 - 13.1 mi

Top 44%
×2stories
+19ft-37ft

Overall

12449

Females

3216

F18-39

3216

Half→25K

13.1 - 15.5 mi

Top 52%
×4stories
+66ft-88ft

Overall

14908

Females

4696

F18-39

4696

25K→30K

15.5 - 18.6 mi

Top 40%
×9stories
+181ft-148ft

Overall

11306

Females

2938

F18-39

2938

30K→20M

18.6 - 20.0 mi

Top 71%
×5stories
+64ft-50ft

Overall

20168

Females

7888

F18-39

7888

20M→21M

20.0 - 21.0 mi

Top 39%
×8stories
+106ft-24ft

Overall

11139

Females

3179

F18-39

3179

21M→35K

21.0 - 21.8 mi

Top 42%
×7stories
+17ft-86ft

Overall

11999

Females

3656

F18-39

3656

35K→23M

21.8 - 23.0 mi

Top 41%
×5stories
+23ft-63ft

Overall

11569

Females

3524

F18-39

3524

23M→24M

23.0 - 24.0 mi

Top 42%
×6stories
+12ft-82ft

Overall

11938

Females

3777

F18-39

3777

24M→40K

24.0 - 24.9 mi

Top 90%
×1story
+6ft-20ft

Overall

25563

Females

10934

F18-39

10934

40K→25.2M

24.9 - 25.2 mi

Top 44%
×1story
+13ft-16ft

Overall

12627

Females

4306

F18-39

4306

25.2M→Finish

25.2 - 26.2 mi

Top 44%
×2stories
+22ft-21ft

Overall

12454

Females

4162

F18-39

4162

Passing Analysis

Category:
Athletes Passed
2669
Passed By
3573
Net Change
-904
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13098
5K → 10K81667+749#13098#12349
10K → 15K39655+341#12349#12008
15K → 20K441007-963#12008#12971
20K → Half629+53#12971#12918
Half → 25K89424-335#12918#13253
25K → 30K46235+427#13253#12826
30K → 20M26772-746#12826#13572
20M → 21M20918+191#13572#13381
21M → 35K9040+50#13381#13331
35K → 23M16932+137#13331#13194
23M → 24M10735+72#13194#13122
24M → 40K41037-1033#13122#14155
40K → 25.2M5514+41#14155#14114
25.2M → Finish14028+112#14114#14002
TOTALS26693573-904
📊

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