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BOSTON MARATHON 2025

Olivia Czech

Bib: 25758•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

Start
0:00:00
Race begins
5K· 3.11 mi
30:56
Rank: #25480
Start → 5K
9:57/mi
30:56 split
10K· 6.21 mi
1:00:32
Rank: #24842 (+638)
5K → 10K
9:32/mi
29:36 split
15K· 9.32 mi
1:29:34
Rank: #24337 (+505)
10K → 15K
9:21/mi
29:02 split
20K· 12.43 mi
1:58:40
Rank: #23874 (+463)
15K → 20K
9:22/mi
29:06 split
Half· 13.11 mi
2:04:58
Rank: #23824 (+50)
20K → Half
9:14/mi
6:18 split
25K· 15.53 mi
2:27:43
Rank: #23441 (+383)
Half → 25K
9:23/mi
22:45 split
30K· 18.64 mi
2:57:22
Rank: #22840 (+601)
25K → 30K
9:33/mi
29:39 split
20M
3:10:35
Rank: #22646 (+194)
30K → 20M
9:44/mi
13:13 split
21M
3:20:44
Rank: #22439 (+207)
20M → 21M
10:09/mi
10:09 split
35K· 21.75 mi
3:28:02
Rank: #22381 (+58)
21M → 35K
9:45/mi
7:18 split
23M
3:40:26
Rank: #22228 (+153)
35K → 23M
9:54/mi
12:24 split
24M
3:50:33
Rank: #22202 (+26)
23M → 24M
10:07/mi
10:07 split
40K· 24.85 mi
4:00:06
Rank: #22272 (-70)
24M → 40K
11:10/mi
9:33 split
25.2M
4:04:11
Rank: #22275 (-3)
40K → 25.2M
11:50/mi
4:05 split
Finish· 26.22 mi
4:14:07
Rank: #22237 (+38)
25.2M → Finish
9:45/mi
9:56 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:04:58
Pace9:32 /mi
2nd Half
Distance13.11 mi
Time2:09:09
Pace9:51 /mi
📊Positive Split: 3.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:46:2430:569:5730:56
9:57
-
10K
6.21 mi12:16:001:00:329:4529:36
9:32
-0:25
15K
9.32 mi12:45:021:29:349:3729:02
9:21
-0:11
20K
12.43 mi13:14:081:58:409:3329:06
9:22
+0:01
Half
13.11 mi13:20:262:04:589:326:18
9:14
-0:08
25K
15.53 mi13:43:112:27:439:3122:45
9:23
+0:09
30K
18.64 mi14:12:502:57:229:3129:39
9:33
+0:10
20M
20.00 mi14:26:033:10:359:3213:13
9:44
+0:11
21M
21.00 mi14:36:123:20:449:3410:09
10:09
+0:25
35K
21.75 mi14:43:303:28:029:347:18
9:45
-0:24
23M
23.00 mi14:55:543:40:269:3512:24
9:54
+0:09
24M
24.00 mi15:06:013:50:339:3610:07
10:07
+0:13
40K
24.85 mi15:15:344:00:069:409:33
11:10
+1:03
25.2M
25.20 mi15:19:394:04:119:414:05
11:50
+0:40
Finish
26.22 mi15:29:354:14:079:429:56
9:45
-2:05

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

9:14 /mi

Average Pace

9:42 /mi

Slowest Pace

11:50 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:27:11

34% of race

Time at Steady Pace

2:13:02

52% of race

Time at Slower Pace

33:54

13% of race

Average Pace: 9:42 /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 mi11:46:2430:569:5730:56
9:57
#25480
10K
6.21 mi12:16:001:00:329:4529:36
9:32
#24842
15K
9.32 mi12:45:021:29:349:3729:02
9:21
#24337
20K
12.43 mi13:14:081:58:409:3329:06
9:22
#23874
Half
13.11 mi13:20:262:04:589:326:18
9:14
#23824
25K
15.53 mi13:43:112:27:439:3122:45
9:23
#23441
30K
18.64 mi14:12:502:57:229:3129:39
9:33
#22840
20M
20.00 mi14:26:033:10:359:3213:13
9:44
#22646
21M
21.00 mi14:36:123:20:449:3410:09
10:09
#22439
35K
21.75 mi14:43:303:28:029:347:18
9:45
#22381
23M
23.00 mi14:55:543:40:269:3512:24
9:54
#22228
24M
24.00 mi15:06:013:50:339:3610:07
10:07
#22202
40K
24.85 mi15:15:344:00:069:409:33
11:10
#22272
25.2M
25.20 mi15:19:394:04:119:414:05
11:50
#22275
Finish
26.22 mi15:29:354:14:079:429:56
9:45
#22237
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi25480104671046723339(Top 82%)9284(Top 76%)9284(Top 170%)
10K6.21 mi3.10 mi24842+63810146+32110146+32124177(Top 85%)9787(Top 80%)9787(Top 179%)
15K9.32 mi3.11 mi24337+5059865+2819865+28123339(Top 82%)9284(Top 76%)9284(Top 170%)
20K12.43 mi3.11 mi23874+4639624+2419624+24122474(Top 79%)8850(Top 72%)8850(Top 162%)
Half13.11 mi0.68 mi23824+509594+309594+3022763(Top 80%)9017(Top 74%)9017(Top 165%)
25K15.53 mi2.42 mi23441+3839378+2169378+21621498(Top 76%)8361(Top 68%)8361(Top 153%)
30K18.64 mi3.11 mi22840+6019090+2889090+28820123(Top 71%)7726(Top 63%)7726(Top 141%)
20M20.00 mi1.36 mi22646+1949012+789012+7820050(Top 71%)7824(Top 64%)7824(Top 143%)
21M21.00 mi1.00 mi22439+2078910+1028910+10218889(Top 67%)7287(Top 60%)7287(Top 133%)
35K21.75 mi0.75 mi22381+588890+208890+2021223(Top 75%)8631(Top 71%)8631(Top 158%)
23M23.00 mi1.25 mi22228+1538846+448846+4420191(Top 71%)8152(Top 67%)8152(Top 149%)
24M24.00 mi1.00 mi22202+268861-158861-1521706(Top 76%)8971(Top 73%)8971(Top 164%)
40K24.85 mi0.85 mi22272-708903-428903-4223504(Top 83%)9946(Top 81%)9946(Top 182%)
25.2M25.20 mi0.35 mi22275-38911-88911-822914(Top 81%)9614(Top 79%)9614(Top 176%)
Finish26.22 mi1.02 mi22237+388918-78918-722101(Top 78%)9209(Top 75%)9209(Top 168%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 82%
×21stories
+97ft-345ft

Overall

23339

Females

9284

F18-39

9284

5K→10K

3.1 - 6.2 mi

Top 85%
×5stories
+79ft-138ft

Overall

24177

Females

9787

F18-39

9787

10K→15K

6.2 - 9.3 mi

Top 82%
×3stories
+67ft-78ft

Overall

23339

Females

9284

F18-39

9284

15K→20K

9.3 - 12.4 mi

Top 79%
×5stories
+106ft-86ft

Overall

22474

Females

8850

F18-39

8850

20K→Half

12.4 - 13.1 mi

Top 80%
×2stories
+19ft-37ft

Overall

22763

Females

9017

F18-39

9017

Half→25K

13.1 - 15.5 mi

Top 76%
×4stories
+66ft-88ft

Overall

21498

Females

8361

F18-39

8361

25K→30K

15.5 - 18.6 mi

Top 71%
×9stories
+181ft-148ft

Overall

20123

Females

7726

F18-39

7726

30K→20M

18.6 - 20.0 mi

Top 71%
×5stories
+64ft-50ft

Overall

20050

Females

7824

F18-39

7824

20M→21M

20.0 - 21.0 mi

Top 67%
×8stories
+106ft-24ft

Overall

18889

Females

7287

F18-39

7287

21M→35K

21.0 - 21.8 mi

Top 75%
×7stories
+17ft-86ft

Overall

21223

Females

8631

F18-39

8631

35K→23M

21.8 - 23.0 mi

Top 71%
×5stories
+23ft-63ft

Overall

20191

Females

8152

F18-39

8152

23M→24M

23.0 - 24.0 mi

Top 76%
×6stories
+12ft-82ft

Overall

21706

Females

8971

F18-39

8971

24M→40K

24.0 - 24.9 mi

Top 83%
×1story
+6ft-20ft

Overall

23504

Females

9946

F18-39

9946

40K→25.2M

24.9 - 25.2 mi

Top 81%
×1story
+13ft-16ft

Overall

22914

Females

9614

F18-39

9614

25.2M→Finish

25.2 - 26.2 mi

Top 78%
×2stories
+22ft-21ft

Overall

22101

Females

9209

F18-39

9209

Passing Analysis

Category:
Athletes Passed
3506
Passed By
263
Net Change
+3243
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25480
5K → 10K65921+638#25480#24842
10K → 15K5138+505#24842#24337
15K → 20K4663+463#24337#23874
20K → Half566+50#23874#23824
Half → 25K3874+383#23824#23441
25K → 30K6065+601#23441#22840
30K → 20M1973+194#22840#22646
20M → 21M2158+207#22646#22439
21M → 35K7416+58#22439#22381
35K → 23M16714+153#22381#22228
23M → 24M6337+26#22228#22202
24M → 40K2090-70#22202#22272
40K → 25.2M2023-3#22272#22275
25.2M → Finish6325+38#22275#22237
TOTALS3506263+3243
📊

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