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BOSTON MARATHON 2025

Isabel Onkelbach

Bib: 14138•F

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 33%
Gender (Female)
#0 / 12228
Top 16%
Division (F18-39)
#0 / 5469
Top 29%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:00
Rank: #6014
Start → 5K
6:46/mi
21:00 split
10K· 6.21 mi
42:26
Rank: #6575 (-561)
5K → 10K
6:54/mi
21:26 split
15K· 9.32 mi
1:03:40
Rank: #6494 (+81)
10K → 15K
6:50/mi
21:14 split
20K· 12.43 mi
1:25:09
Rank: #6426 (+68)
15K → 20K
6:55/mi
21:29 split
Half· 13.11 mi
1:29:49
Rank: #6431 (-5)
20K → Half
6:50/mi
4:40 split
25K· 15.53 mi
1:46:52
Rank: #6412 (+19)
Half → 25K
7:02/mi
17:03 split
30K· 18.64 mi
2:09:34
Rank: #6335 (+77)
25K → 30K
7:18/mi
22:42 split
20M
2:20:05
Rank: #6415 (-80)
30K → 20M
7:44/mi
10:31 split
21M
2:28:35
Rank: #6539 (-124)
20M → 21M
8:30/mi
8:30 split
35K· 21.75 mi
2:34:25
Rank: #6634 (-95)
21M → 35K
7:48/mi
5:50 split
23M
2:49:10
Rank: #8264 (-1630)
35K → 23M
11:47/mi
14:45 split
24M
2:57:11
Rank: #8348 (-84)
23M → 24M
8:01/mi
8:01 split
40K· 24.85 mi
3:06:53
Rank: #9410 (-1062)
24M → 40K
11:21/mi
9:42 split
25.2M
3:09:50
Rank: #9381 (+29)
40K → 25.2M
8:33/mi
2:57 split
Finish· 26.22 mi
3:17:47
Rank: #9443 (-62)
25.2M → Finish
7:48/mi
7:57 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:29:49
Pace6:51 /mi
2nd Half
Distance13.11 mi
Time1:47:58
Pace8:14 /mi
📊Positive Split: 20.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:2421:006:4621:00
6:46
-
10K
6.21 mi11:12:5042:266:5021:26
6:54
+0:08
15K
9.32 mi11:34:041:03:406:5021:14
6:50
-0:04
20K
12.43 mi11:55:331:25:096:5121:29
6:55
+0:05
Half
13.11 mi12:00:131:29:496:514:40
6:50
-0:05
25K
15.53 mi12:17:161:46:526:5317:03
7:02
+0:12
30K
18.64 mi12:39:582:09:346:5722:42
7:18
+0:16
20M
20.00 mi12:50:292:20:057:0010:31
7:44
+0:26
21M
21.00 mi12:58:592:28:357:058:30
8:30
+0:46
35K
21.75 mi13:04:492:34:257:065:50
7:48
-0:42
23M
23.00 mi13:19:342:49:107:2114:45
11:47
+3:59
24M
24.00 mi13:27:352:57:117:238:01
8:01
-3:46
40K
24.85 mi13:37:173:06:537:319:42
11:21
+3:20
25.2M
25.20 mi13:40:143:09:507:322:57
8:33
-2:48
Finish
26.22 mi13:48:113:17:477:337:57
7:48
-0:45

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

6:46 /mi

Average Pace

7:33 /mi

Slowest Pace

11:47 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:29:49

45% of race

Time at Steady Pace

1:12:04

36% of race

Time at Slower Pace

35:54

18% of race

Average Pace: 7:33 /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 mi10:51:2421:006:4621:00
6:46
#6014
10K
6.21 mi11:12:5042:266:5021:26
6:54
#6575
15K
9.32 mi11:34:041:03:406:5021:14
6:50
#6494
20K
12.43 mi11:55:331:25:096:5121:29
6:55
#6426
Half
13.11 mi12:00:131:29:496:514:40
6:50
#6431
25K
15.53 mi12:17:161:46:526:5317:03
7:02
#6412
30K
18.64 mi12:39:582:09:346:5722:42
7:18
#6335
20M
20.00 mi12:50:292:20:057:0010:31
7:44
#6415
21M
21.00 mi12:58:592:28:357:058:30
8:30
#6539
35K
21.75 mi13:04:492:34:257:065:50
7:48
#6634
23M
23.00 mi13:19:342:49:107:2114:45
11:47
#8264
24M
24.00 mi13:27:352:57:117:238:01
8:01
#8348
40K
24.85 mi13:37:173:06:537:319:42
11:21
#9410
25.2M
25.20 mi13:40:143:09:507:322:57
8:33
#9381
Finish
26.22 mi13:48:113:17:477:337:57
7:48
#9443
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi60144794796455(Top 23%)609(Top 5%)609(Top 11%)
10K6.21 mi3.10 mi6575-561592-113592-1137235(Top 25%)759(Top 6%)759(Top 14%)
15K9.32 mi3.11 mi6494+81597-5597-56455(Top 23%)609(Top 5%)609(Top 11%)
20K12.43 mi3.11 mi6426+68595+2595+26325(Top 22%)629(Top 5%)629(Top 12%)
Half13.11 mi0.68 mi6431-55955956565(Top 23%)686(Top 6%)686(Top 13%)
25K15.53 mi2.42 mi6412+19601-6601-66547(Top 23%)737(Top 6%)737(Top 13%)
30K18.64 mi3.11 mi6335+77623-22623-226502(Top 23%)834(Top 7%)834(Top 15%)
20M20.00 mi1.36 mi6415-80650-27650-278655(Top 30%)1818(Top 15%)1818(Top 33%)
21M21.00 mi1.00 mi6539-124711-61711-6110481(Top 37%)2840(Top 23%)2840(Top 52%)
35K21.75 mi0.75 mi6634-95748-37748-3710813(Top 38%)2996(Top 25%)2996(Top 55%)
23M23.00 mi1.25 mi8264-16301336-5881336-58824732(Top 87%)10461(Top 86%)10461(Top 191%)
24M24.00 mi1.00 mi8348-841404-681404-6811366(Top 40%)3489(Top 29%)3489(Top 64%)
40K24.85 mi0.85 mi9410-10621892-4881892-48823850(Top 84%)10094(Top 83%)10094(Top 185%)
25.2M25.20 mi0.35 mi9381+291897-51897-59149(Top 32%)2586(Top 21%)2586(Top 47%)
Finish26.22 mi1.02 mi9443-621963-661963-6611460(Top 40%)3677(Top 30%)3677(Top 67%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 23%
×21story building
+97ft-345ft

Overall

6455

Females

609

F18-39

609

5K→10K

3.1 - 6.2 mi

Top 25%
×5story building
+79ft-138ft

Overall

7235

Females

759

F18-39

759

10K→15K

6.2 - 9.3 mi

Top 23%
×3story building
+67ft-78ft

Overall

6455

Females

609

F18-39

609

15K→20K

9.3 - 12.4 mi

Top 22%
×5story building
+106ft-86ft

Overall

6325

Females

629

F18-39

629

20K→Half

12.4 - 13.1 mi

Top 23%
×2story building
+19ft-37ft

Overall

6565

Females

686

F18-39

686

Half→25K

13.1 - 15.5 mi

Top 23%
×4story building
+66ft-88ft

Overall

6547

Females

737

F18-39

737

25K→30K

15.5 - 18.6 mi

Top 23%
×9story building
+181ft-148ft

Overall

6502

Females

834

F18-39

834

30K→20M

18.6 - 20.0 mi

Top 30%
×5story building
+64ft-50ft

Overall

8655

Females

1818

F18-39

1818

20M→21M

20.0 - 21.0 mi

Top 37%
×8story building
+106ft-24ft

Overall

10481

Females

2840

F18-39

2840

21M→35K

21.0 - 21.8 mi

Top 38%
×7story building
+17ft-86ft

Overall

10813

Females

2996

F18-39

2996

35K→23M

21.8 - 23.0 mi

Top 87%
×5story building
+23ft-63ft

Overall

24732

Females

10461

F18-39

10461

23M→24M

23.0 - 24.0 mi

Top 40%
×6story building
+12ft-82ft

Overall

11366

Females

3489

F18-39

3489

24M→40K

24.0 - 24.9 mi

Top 84%
×1story
+6ft-20ft

Overall

23850

Females

10094

F18-39

10094

40K→25.2M

24.9 - 25.2 mi

Top 32%
×1story
+13ft-16ft

Overall

9149

Females

2586

F18-39

2586

25.2M→Finish

25.2 - 26.2 mi

Top 40%
×2story building
+22ft-21ft

Overall

11460

Females

3677

F18-39

3677

Passing Analysis

Category:
Athletes Passed
1086
Passed By
4515
Net Change
-3429
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6014
5K → 10K55616-561#6014#6575
10K → 15K198117+81#6575#6494
15K → 20K16395+68#6494#6426
20K → Half2328-5#6426#6431
Half → 25K137118+19#6431#6412
25K → 30K209132+77#6412#6335
30K → 20M67147-80#6335#6415
20M → 21M34158-124#6415#6539
21M → 35K31126-95#6539#6634
35K → 23M61636-1630#6634#8264
23M → 24M53137-84#8264#8348
24M → 40K41066-1062#8348#9410
40K → 25.2M5627+29#9410#9381
25.2M → Finish50112-62#9381#9443
TOTALS10864515-3429
📊

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