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BOSTON MARATHON 2025

Katarzyna Merda

Bib: 19272 F PL

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

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
8:27/mi
26:16
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
8:23/mi
52:18
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
8:12/mi
1:17:48
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
9:21/mi
1:46:51
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
8:14/mi
1:52:28
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
8:15/mi
2:12:27
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
10:01/mi
2:43:34
↑ 181↓ 1480.2%
138 ft elev
20M
8:39/mi
2:55:19
↑ 64↓ 500.2%
148 ft elev
21M
9:18/mi
3:04:37
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
7:59/mi
3:10:35
↑ 17↓ 861.7%
156 ft elev
23M
8:24/mi
3:21:06
↑ 23↓ 630.6%
116 ft elev
24M
8:11/mi
3:29:17
↓ 821.3%
34 ft elev
40K· 24.85 mi
8:31/mi
3:36:34
↓ 200.3%
20 ft elev
25.2M
9:52/mi
3:39:58
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
8:30/mi
3:48:38
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
1:52:288:35 /mi⚡ faster
2nd Half
1:56:108:52 /mi+3.3%
Positive split — 3.3% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
26:168:273.11 mi26:16
8:27
-
10K
52:188:253.10 mi26:02
8:23
-0:04
15K
1:17:488:213.11 mi25:30
8:12
-0:11
20K
1:46:518:363.11 mi29:03
9:21
+1:09
Half(13.11 mi)
1:52:288:350.68 mi5:37
8:14
-1:07
25K
2:12:278:322.42 mi19:59
8:15
+0:01
30K
2:43:348:463.11 mi31:07
10:01
+1:46
20M
2:55:198:461.36 mi11:45
8:39
-1:22
21M
3:04:378:471.00 mi9:18
9:18
+0:39
35K
3:10:358:460.75 mi5:58
7:59
-1:19
23M
3:21:068:451.25 mi10:31
8:24
+0:25
24M
3:29:178:431.00 mi8:11
8:11
-0:13
40K
3:36:348:430.85 mi7:17
8:31
+0:20
25.2M
3:39:588:440.35 mi3:24
9:52
+1:21
Finish(26.22 mi)
3:48:388:441.02 mi8:40
8:30
-1:22
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

7:59 /mi

Average Pace

8:44 /mi

Slowest Pace

10:01 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

5:58

3% of race

Time at Steady Pace

2:29:48

66% of race

Time at Slower Pace

1:12:52

32% of race

Average Pace: 8:43 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

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0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi19626727372731744859855985
10K3.10 mi19345+2817087+1867087+1861907669276927
15K3.11 mi18712+6336739+3486739+3481744859855985
20K3.11 mi19855-11437393-6547393-6542241888168816
Half(13.11 mi)0.68 mi19750+1057333+607333+601755460806080
25K2.42 mi19068+6826957+3766957+3761559050745074
30K3.11 mi19726-6587366-4097366-4092163985818581
20M1.36 mi19377+3497195+1717195+1711474549204920
21M1.00 mi19128+2497069+1267069+1261518552895289
35K0.75 mi18898+2306967+1026967+1021218737613761
23M1.25 mi18544+3546791+1766791+1761273941374137
24M1.00 mi18263+2816662+1296662+1291251540694069
40K0.85 mi18097+1666599+636599+631361147774777
25.2M0.35 mi18071+266592+76592+71644663076307
Finish(26.22 mi)1.02 mi17995+766567+256567+251628061846184

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 61%
×21story building
+97ft-345ft

Overall

17448

Females

5985

F18-39

5985

5K→10K

3.1 - 6.2 mi

Top 67%
×5story building
+79ft-138ft

Overall

19076

Females

6927

F18-39

6927

10K→15K

6.2 - 9.3 mi

Top 61%
×3story building
+67ft-78ft

Overall

17448

Females

5985

F18-39

5985

15K→20K

9.3 - 12.4 mi

Top 79%
×5story building
+106ft-86ft

Overall

22418

Females

8816

F18-39

8816

20K→Half

12.4 - 13.1 mi

Top 62%
×2story building
+19ft-37ft

Overall

17554

Females

6080

F18-39

6080

Half→25K

13.1 - 15.5 mi

Top 55%
×4story building
+66ft-88ft

Overall

15590

Females

5074

F18-39

5074

25K→30K

15.5 - 18.6 mi

Top 76%
×9story building
+181ft-148ft

Overall

21639

Females

8581

F18-39

8581

30K→20M

18.6 - 20.0 mi

Top 52%
×5story building
+64ft-50ft

Overall

14745

Females

4920

F18-39

4920

20M→21M

20.0 - 21.0 mi

Top 53%
×8story building
+106ft-24ft

Overall

15185

Females

5289

F18-39

5289

21M→35K

21.0 - 21.8 mi

Top 43%
×7story building
+17ft-86ft

Overall

12187

Females

3761

F18-39

3761

35K→23M

21.8 - 23.0 mi

Top 45%
×5story building
+23ft-63ft

Overall

12739

Females

4137

F18-39

4137

23M→24M

23.0 - 24.0 mi

Top 44%
×6story building
+12ft-82ft

Overall

12515

Females

4069

F18-39

4069

24M→40K

24.0 - 24.9 mi

Top 48%
×1story
+6ft-20ft

Overall

13611

Females

4777

F18-39

4777

40K→25.2M

24.9 - 25.2 mi

Top 58%
×1story
+13ft-16ft

Overall

16446

Females

6307

F18-39

6307

25.2M→Finish

25.2 - 26.2 mi

Top 57%
×2story building
+22ft-21ft

Overall

16280

Females

6184

F18-39

6184

Passing Analysis

Category:
Passed
3781
Passed By
2150
Net Change
+1631
SegmentPassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19626
5K → 10K428147+281#19626#19345
10K → 15K65522+633#19345#18712
15K → 20K301173-1143#18712#19855
20K → Half1072+105#19855#19750
Half → 25K6853+682#19750#19068
25K → 30K78736-658#19068#19726
30K → 20M3501+349#19726#19377
20M → 21M25910+249#19377#19128
21M → 35K2300+230#19128#18898
35K → 23M3573+354#18898#18544
23M → 24M2821+281#18544#18263
24M → 40K1715+166#18263#18097
40K → 25.2M4216+26#18097#18071
25.2M → Finish10731+76#18071#17995
TOTALS37812150+1631

Passing Charts

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