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BOSTON MARATHON 2025

Jill Zimmerman

Bib: 16477•F

NY

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 40%
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
23:23
Rank: #12488
Start → 5K
23:23 | 7:32/mi
10K· 6.21 mi
46:52
Rank: #12523 (-35)
5K → 10K
23:29 | 7:34/mi
15K· 9.32 mi
1:10:30
Rank: #12549 (-26)
10K → 15K
23:38 | 7:36/mi
20K· 12.43 mi
1:35:59
Rank: #13574 (-1025)
15K → 20K
25:29 | 8:12/mi
Half· 13.11 mi
1:41:21
Rank: #13638 (-64)
20K → Half
5:22 | 7:52/mi
25K· 15.53 mi
2:00:59
Rank: #13798 (-160)
Half → 25K
19:38 | 8:06/mi
30K· 18.64 mi
2:27:15
Rank: #13874 (-76)
25K → 30K
26:16 | 8:27/mi
20M
2:38:57
Rank: #13900 (-26)
30K → 20M
11:42 | 8:37/mi
21M
2:48:18
Rank: #13964 (-64)
20M → 21M
9:21 | 9:21/mi
35K· 21.75 mi
2:54:46
Rank: #14070 (-106)
21M → 35K
6:28 | 8:39/mi
23M
3:06:22
Rank: #14366 (-296)
35K → 23M
11:36 | 9:16/mi
24M
3:15:46
Rank: #14596 (-230)
23M → 24M
9:24 | 9:24/mi
40K· 24.85 mi
3:24:06
Rank: #14822 (-226)
24M → 40K
8:20 | 9:45/mi
25.2M
3:27:51
Rank: #14943 (-121)
40K → 25.2M
3:45 | 10:52/mi
Finish· 26.22 mi
3:36:50
Rank: #15054 (-111)
25.2M → Finish
8:59 | 8:49/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:41:21
Pace7:44 /mi
2nd Half
Distance13.11 mi
Time1:55:29
Pace8:49 /mi
📊Positive Split: 13.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:57:2123:237:3223:23
7:32
-
10K
6.21 mi11:20:5046:527:3323:29
7:34
+0:02
15K
9.32 mi11:44:281:10:307:3423:38
7:36
+0:02
20K
12.43 mi12:09:571:35:597:4325:29
8:12
+0:36
Half
13.11 mi12:15:191:41:217:445:22
7:52
-0:20
25K
15.53 mi12:34:572:00:597:4719:38
8:06
+0:14
30K
18.64 mi13:01:132:27:157:5426:16
8:27
+0:21
20M
20.00 mi13:12:552:38:577:5711:42
8:37
+0:10
21M
21.00 mi13:22:162:48:188:019:21
9:21
+0:44
35K
21.75 mi13:28:442:54:468:026:28
8:39
-0:42
23M
23.00 mi13:40:203:06:228:0611:36
9:16
+0:37
24M
24.00 mi13:49:443:15:468:099:24
9:24
+0:08
40K
24.85 mi13:58:043:24:068:138:20
9:45
+0:21
25.2M
25.20 mi14:01:493:27:518:153:45
10:52
+1:07
Finish
26.22 mi14:10:483:36:508:178:59
8:49
-2:03

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

7:32 /mi

Average Pace

8:17 /mi

Slowest Pace

10:52 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:35:30

44% of race

Time at Steady Pace

1:18:54

36% of race

Time at Slower Pace

42:26

20% of race

Average Pace: 8:16 /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 mi10:57:2123:237:3223:23
7:32
#12488
10K
6.21 mi11:20:5046:527:3323:29
7:34
#12523
15K
9.32 mi11:44:281:10:307:3423:38
7:36
#12549
20K
12.43 mi12:09:571:35:597:4325:29
8:12
#13574
Half
13.11 mi12:15:191:41:217:445:22
7:52
#13638
25K
15.53 mi12:34:572:00:597:4719:38
8:06
#13798
30K
18.64 mi13:01:132:27:157:5426:16
8:27
#13874
20M
20.00 mi13:12:552:38:577:5711:42
8:37
#13900
21M
21.00 mi13:22:162:48:188:019:21
9:21
#13964
35K
21.75 mi13:28:442:54:468:026:28
8:39
#14070
23M
23.00 mi13:40:203:06:228:0611:36
9:16
#14366
24M
24.00 mi13:49:443:15:468:099:24
9:24
#14596
40K
24.85 mi13:58:043:24:068:138:20
9:45
#14822
25.2M
25.20 mi14:01:493:27:518:153:45
10:52
#14943
Finish
26.22 mi14:10:483:36:508:178:59
8:49
#15054
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi124883065306512679(Top 45%)3268(Top 27%)3268(Top 60%)
10K6.21 mi3.10 mi12523-353089-243089-2412668(Top 45%)3186(Top 26%)3186(Top 58%)
15K9.32 mi3.11 mi12549-263132-433132-4312679(Top 45%)3268(Top 27%)3268(Top 60%)
20K12.43 mi3.11 mi13574-10253773-6413773-64116325(Top 57%)5397(Top 44%)5397(Top 99%)
Half13.11 mi0.68 mi13638-643809-363809-3614873(Top 52%)4551(Top 37%)4551(Top 83%)
25K15.53 mi2.42 mi13798-1603930-1213930-12114642(Top 52%)4560(Top 37%)4560(Top 83%)
30K18.64 mi3.11 mi13874-764036-1064036-10614486(Top 51%)4627(Top 38%)4627(Top 85%)
20M20.00 mi1.36 mi13900-264090-544090-5414512(Top 51%)4781(Top 39%)4781(Top 87%)
21M21.00 mi1.00 mi13964-644144-544144-5415415(Top 54%)5398(Top 44%)5398(Top 99%)
35K21.75 mi0.75 mi14070-1064226-824226-8216335(Top 58%)5955(Top 49%)5955(Top 109%)
23M23.00 mi1.25 mi14366-2964415-1894415-18917628(Top 62%)6800(Top 56%)6800(Top 124%)
24M24.00 mi1.00 mi14596-2304572-1574572-15719235(Top 68%)7663(Top 63%)7663(Top 140%)
40K24.85 mi0.85 mi14822-2264732-1604732-16019631(Top 69%)7952(Top 65%)7952(Top 145%)
25.2M25.20 mi0.35 mi14943-1214819-874819-8720262(Top 71%)8282(Top 68%)8282(Top 151%)
Finish26.22 mi1.02 mi15054-1114905-864905-8618140(Top 64%)7149(Top 58%)7149(Top 131%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 45%
×21stories
+97ft-345ft

Overall

12679

Females

3268

F18-39

3268

5K→10K

3.1 - 6.2 mi

Top 45%
×5stories
+79ft-138ft

Overall

12668

Females

3186

F18-39

3186

10K→15K

6.2 - 9.3 mi

Top 45%
×3stories
+67ft-78ft

Overall

12679

Females

3268

F18-39

3268

15K→20K

9.3 - 12.4 mi

Top 57%
×5stories
+106ft-86ft

Overall

16325

Females

5397

F18-39

5397

20K→Half

12.4 - 13.1 mi

Top 52%
×2stories
+19ft-37ft

Overall

14873

Females

4551

F18-39

4551

Half→25K

13.1 - 15.5 mi

Top 52%
×4stories
+66ft-88ft

Overall

14642

Females

4560

F18-39

4560

25K→30K

15.5 - 18.6 mi

Top 51%
×9stories
+181ft-148ft

Overall

14486

Females

4627

F18-39

4627

30K→20M

18.6 - 20.0 mi

Top 51%
×5stories
+64ft-50ft

Overall

14512

Females

4781

F18-39

4781

20M→21M

20.0 - 21.0 mi

Top 54%
×8stories
+106ft-24ft

Overall

15415

Females

5398

F18-39

5398

21M→35K

21.0 - 21.8 mi

Top 58%
×7stories
+17ft-86ft

Overall

16335

Females

5955

F18-39

5955

35K→23M

21.8 - 23.0 mi

Top 62%
×5stories
+23ft-63ft

Overall

17628

Females

6800

F18-39

6800

23M→24M

23.0 - 24.0 mi

Top 68%
×6stories
+12ft-82ft

Overall

19235

Females

7663

F18-39

7663

24M→40K

24.0 - 24.9 mi

Top 69%
×1story
+6ft-20ft

Overall

19631

Females

7952

F18-39

7952

40K→25.2M

24.9 - 25.2 mi

Top 71%
×1story
+13ft-16ft

Overall

20262

Females

8282

F18-39

8282

25.2M→Finish

25.2 - 26.2 mi

Top 64%
×2stories
+22ft-21ft

Overall

18140

Females

7149

F18-39

7149

Passing Analysis

Category:
Athletes Passed
1250
Passed By
3816
Net Change
-2566
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12488
5K → 10K264299-35#12488#12523
10K → 15K185211-26#12523#12549
15K → 20K421067-1025#12549#13574
20K → Half1579-64#13574#13638
Half → 25K136296-160#13638#13798
25K → 30K219295-76#13798#13874
30K → 20M113139-26#13874#13900
20M → 21M84148-64#13900#13964
21M → 35K39145-106#13964#14070
35K → 23M49345-296#14070#14366
23M → 24M20250-230#14366#14596
24M → 40K27253-226#14596#14822
40K → 25.2M16137-121#14822#14943
25.2M → Finish41152-111#14943#15054
TOTALS12503816-2566
📊

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