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BOSTON MARATHON 2025

Katherine Olszowy

Bib: 26932•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
29:13
Rank: #23938
Start → 5K
29:13 | 9:24/mi
10K· 6.21 mi
58:27
Rank: #23911 (+27)
5K → 10K
29:14 | 9:25/mi
15K· 9.32 mi
1:27:36
Rank: #23744 (+167)
10K → 15K
29:09 | 9:23/mi
20K· 12.43 mi
1:59:23
Rank: #24042 (-298)
15K → 20K
31:47 | 10:14/mi
Half· 13.11 mi
2:06:01
Rank: #24045 (-3)
20K → Half
6:38 | 9:43/mi
25K· 15.53 mi
2:31:11
Rank: #24059 (-14)
Half → 25K
25:10 | 10:23/mi
30K· 18.64 mi
3:03:01
Rank: #23720 (+339)
25K → 30K
31:50 | 10:15/mi
20M
3:17:29
Rank: #23650 (+70)
30K → 20M
14:28 | 10:39/mi
21M
3:28:30
Rank: #23521 (+129)
20M → 21M
11:01 | 11:01/mi
35K· 21.75 mi
3:37:35
Rank: #23678 (-157)
21M → 35K
9:05 | 12:08/mi
23M
3:50:46
Rank: #23557 (+121)
35K → 23M
13:11 | 10:32/mi
24M
4:01:25
Rank: #23547 (+10)
23M → 24M
10:39 | 10:39/mi
40K· 24.85 mi
4:10:38
Rank: #23525 (+22)
24M → 40K
9:13 | 10:47/mi
25.2M
4:14:33
Rank: #23480 (+45)
40K → 25.2M
3:55 | 11:21/mi
Finish· 26.22 mi
4:23:56
Rank: #23381 (+99)
25.2M → Finish
9:23 | 9:12/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:06:01
Pace9:37 /mi
2nd Half
Distance13.11 mi
Time2:17:55
Pace10:31 /mi
📊Positive Split: 9.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:52:1329:139:2429:13
9:24
-
10K
6.21 mi12:21:2758:279:2429:14
9:25
+0:01
15K
9.32 mi12:50:361:27:369:2429:09
9:23
-0:02
20K
12.43 mi13:22:231:59:239:3631:47
10:14
+0:51
Half
13.11 mi13:29:012:06:019:376:38
9:43
-0:31
25K
15.53 mi13:54:112:31:119:4425:10
10:23
+0:40
30K
18.64 mi14:26:013:03:019:4931:50
10:15
-0:08
20M
20.00 mi14:40:293:17:299:5214:28
10:39
+0:24
21M
21.00 mi14:51:303:28:309:5611:01
11:01
+0:22
35K
21.75 mi15:00:353:37:3510:009:05
12:08
+1:07
23M
23.00 mi15:13:463:50:4610:0213:11
10:32
-1:36
24M
24.00 mi15:24:254:01:2510:0410:39
10:39
+0:07
40K
24.85 mi15:33:384:10:3810:059:13
10:47
+0:08
25.2M
25.20 mi15:37:334:14:3310:063:55
11:21
+0:34
Finish
26.22 mi15:46:564:23:5610:049:23
9:12
-2:09

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

9:12 /mi

Average Pace

10:04 /mi

Slowest Pace

12:08 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:43:37

39% of race

Time at Steady Pace

2:07:05

48% of race

Time at Slower Pace

33:14

13% of race

Average Pace: 10:04 /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 mi11:52:1329:139:2429:13
9:24
#23938
10K
6.21 mi12:21:2758:279:2429:14
9:25
#23911
15K
9.32 mi12:50:361:27:369:2429:09
9:23
#23744
20K
12.43 mi13:22:231:59:239:3631:47
10:14
#24042
Half
13.11 mi13:29:012:06:019:376:38
9:43
#24045
25K
15.53 mi13:54:112:31:119:4425:10
10:23
#24059
30K
18.64 mi14:26:013:03:019:4931:50
10:15
#23720
20M
20.00 mi14:40:293:17:299:5214:28
10:39
#23650
21M
21.00 mi14:51:303:28:309:5611:01
11:01
#23521
35K
21.75 mi15:00:353:37:3510:009:05
12:08
#23678
23M
23.00 mi15:13:463:50:4610:0213:11
10:32
#23557
24M
24.00 mi15:24:254:01:2510:0410:39
10:39
#23547
40K
24.85 mi15:33:384:10:3810:059:13
10:47
#23525
25.2M
25.20 mi15:37:334:14:3310:063:55
11:21
#23480
Finish
26.22 mi15:46:564:23:5610:049:23
9:12
#23381
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi239389669966923438(Top 83%)9340(Top 76%)9340(Top 171%)
10K6.21 mi3.10 mi23911+279638+319638+3123851(Top 84%)9594(Top 78%)9594(Top 175%)
15K9.32 mi3.11 mi23744+1679541+979541+9723438(Top 83%)9340(Top 76%)9340(Top 171%)
20K12.43 mi3.11 mi24042-2989715-1749715-17424711(Top 87%)10109(Top 83%)10109(Top 185%)
Half13.11 mi0.68 mi24045-39716-19716-124185(Top 85%)9805(Top 80%)9805(Top 179%)
25K15.53 mi2.42 mi24059-149742-269742-2624139(Top 85%)9820(Top 80%)9820(Top 180%)
30K18.64 mi3.11 mi23720+3399585+1579585+15722318(Top 79%)8951(Top 73%)8951(Top 164%)
20M20.00 mi1.36 mi23650+709572+139572+1322825(Top 80%)9331(Top 76%)9331(Top 171%)
21M21.00 mi1.00 mi23521+1299511+619511+6121466(Top 76%)8693(Top 71%)8693(Top 159%)
35K21.75 mi0.75 mi23678-1579605-949605-9426072(Top 92%)11130(Top 91%)11130(Top 204%)
23M23.00 mi1.25 mi23557+1219556+499556+4922112(Top 78%)9127(Top 75%)9127(Top 167%)
24M24.00 mi1.00 mi23547+109569-139569-1323214(Top 82%)9741(Top 80%)9741(Top 178%)
40K24.85 mi0.85 mi23525+229572-39572-322651(Top 80%)9528(Top 78%)9528(Top 174%)
25.2M25.20 mi0.35 mi23480+459561+119561+1121714(Top 76%)9020(Top 74%)9020(Top 165%)
Finish26.22 mi1.02 mi23381+999519+429519+4220014(Top 70%)8162(Top 67%)8162(Top 149%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 83%
×21stories
+97ft-345ft

Overall

23438

Females

9340

F18-39

9340

5K→10K

3.1 - 6.2 mi

Top 84%
×5stories
+79ft-138ft

Overall

23851

Females

9594

F18-39

9594

10K→15K

6.2 - 9.3 mi

Top 83%
×3stories
+67ft-78ft

Overall

23438

Females

9340

F18-39

9340

15K→20K

9.3 - 12.4 mi

Top 87%
×5stories
+106ft-86ft

Overall

24711

Females

10109

F18-39

10109

20K→Half

12.4 - 13.1 mi

Top 85%
×2stories
+19ft-37ft

Overall

24185

Females

9805

F18-39

9805

Half→25K

13.1 - 15.5 mi

Top 85%
×4stories
+66ft-88ft

Overall

24139

Females

9820

F18-39

9820

25K→30K

15.5 - 18.6 mi

Top 79%
×9stories
+181ft-148ft

Overall

22318

Females

8951

F18-39

8951

30K→20M

18.6 - 20.0 mi

Top 80%
×5stories
+64ft-50ft

Overall

22825

Females

9331

F18-39

9331

20M→21M

20.0 - 21.0 mi

Top 76%
×8stories
+106ft-24ft

Overall

21466

Females

8693

F18-39

8693

21M→35K

21.0 - 21.8 mi

Top 92%
×7stories
+17ft-86ft

Overall

26072

Females

11130

F18-39

11130

35K→23M

21.8 - 23.0 mi

Top 78%
×5stories
+23ft-63ft

Overall

22112

Females

9127

F18-39

9127

23M→24M

23.0 - 24.0 mi

Top 82%
×6stories
+12ft-82ft

Overall

23214

Females

9741

F18-39

9741

24M→40K

24.0 - 24.9 mi

Top 80%
×1story
+6ft-20ft

Overall

22651

Females

9528

F18-39

9528

40K→25.2M

24.9 - 25.2 mi

Top 76%
×1story
+13ft-16ft

Overall

21714

Females

9020

F18-39

9020

25.2M→Finish

25.2 - 26.2 mi

Top 70%
×2stories
+22ft-21ft

Overall

20014

Females

8162

F18-39

8162

Passing Analysis

Category:
Athletes Passed
1707
Passed By
1150
Net Change
+557
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23938
5K → 10K251224+27#23938#23911
10K → 15K24174+167#23911#23744
15K → 20K51349-298#23744#24042
20K → Half2629-3#24042#24045
Half → 25K114128-14#24045#24059
25K → 30K36122+339#24059#23720
30K → 20M10737+70#23720#23650
20M → 21M14314+129#23650#23521
21M → 35K11168-157#23521#23678
35K → 23M13615+121#23678#23557
23M → 24M5545+10#23557#23547
24M → 40K5129+22#23547#23525
40K → 25.2M549+45#23525#23480
25.2M → Finish1067+99#23480#23381
TOTALS17071150+557
📊

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