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BOSTON MARATHON 2025

Grazyna Czopek

Bib: 23781•F

NY

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 47%
Masters (Masters Women)
#0 / 6759
Top 35%
Division (F50-54)
#0 / 1303
Top 29%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
8:23/mi
26:04
↑ 97↓ 3451.5%
10K· 6.21 mi
8:21/mi
52:02
↑ 79↓ 1380.4%
15K· 9.32 mi
8:20/mi
1:17:56
↑ 67↓ 78
20K· 12.43 mi
8:30/mi
1:44:21
↑ 106↓ 860.1%
Half· 13.11 mi
8:15/mi
1:49:59
↑ 19↓ 370.5%
25K· 15.53 mi
8:29/mi
2:10:33
↑ 66↓ 880.2%
30K· 18.64 mi
8:41/mi
2:37:32
↑ 181↓ 1480.2%
20M
8:42/mi
2:49:22
↑ 64↓ 500.2%
21M
9:12/mi
2:58:34
↑ 106↓ 241.6%
35K· 21.75 mi
7:59/mi
3:04:32
↑ 17↓ 861.7%
23M
8:39/mi
3:15:22
↑ 23↓ 630.6%
24M
8:26/mi
3:23:48
↓ 821.3%
40K· 24.85 mi
8:43/mi
3:31:15
↓ 200.3%
25.2M
9:20/mi
3:34:28
↑ 13↓ 160.2%
Finish· 26.22 mi
8:22/mi
3:43:00
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:49:59
Pace8:23 /mi
2nd Half
Distance13.11 mi
Time1:53:01
Pace8:37 /mi
📊Positive Split: 2.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:24:0126:048:2326:04
8:23
-
10K
6.21 mi11:49:5952:028:2225:58
8:21
-0:02
15K
9.32 mi12:15:531:17:568:2225:54
8:20
-0:01
20K
12.43 mi12:42:181:44:218:2426:25
8:30
+0:10
Half
13.11 mi12:47:561:49:598:235:38
8:15
-0:15
25K
15.53 mi13:08:302:10:338:2420:34
8:29
+0:14
30K
18.64 mi13:35:292:37:328:2726:59
8:41
+0:12
20M
20.00 mi13:47:192:49:228:2811:50
8:42
+0:01
21M
21.00 mi13:56:312:58:348:309:12
9:12
+0:30
35K
21.75 mi14:02:293:04:328:295:58
7:59
-1:13
23M
23.00 mi14:13:193:15:228:3010:50
8:39
+0:40
24M
24.00 mi14:21:453:23:488:308:26
8:26
-0:13
40K
24.85 mi14:29:123:31:158:307:27
8:43
+0:17
25.2M
25.20 mi14:32:253:34:288:313:13
9:20
+0:37
Finish
26.22 mi14:40:573:43:008:318:32
8:22
-0:58

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

7:59 /mi

Average Pace

8:31 /mi

Slowest Pace

9:20 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:30:35

94% of race

Time at Steady Pace

12:25

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:30 /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 mi11:24:0126:048:2326:04
8:23
#19253
10K
6.21 mi11:49:5952:028:2225:58
8:21
#19090
15K
9.32 mi12:15:531:17:568:2225:54
8:20
#18800
20K
12.43 mi12:42:181:44:218:2426:25
8:30
#18638
Half
13.11 mi12:47:561:49:598:235:38
8:15
#18575
25K
15.53 mi13:08:302:10:338:2420:34
8:29
#18294
30K
18.64 mi13:35:292:37:328:2726:59
8:41
#17792
20M
20.00 mi13:47:192:49:228:2811:50
8:42
#17571
21M
21.00 mi13:56:312:58:348:309:12
9:12
#17381
35K
21.75 mi14:02:293:04:328:295:58
7:59
#17181
23M
23.00 mi14:13:193:15:228:3010:50
8:39
#16976
24M
24.00 mi14:21:453:23:488:308:26
8:26
#16836
40K
24.85 mi14:29:123:31:158:307:27
8:43
#16737
25.2M
25.20 mi14:32:253:34:288:313:13
9:20
#16685
Finish
26.22 mi14:40:573:43:008:318:32
8:22
#16625
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi192537051705118302(Top 64%)6492(Top 53%)6492(Top 498%)
10K6.21 mi3.10 mi19090+1636952+996952+9918927(Top 67%)6835(Top 56%)6835(Top 525%)
15K9.32 mi3.11 mi18800+2906787+1656787+16518302(Top 64%)6492(Top 53%)6492(Top 498%)
20K12.43 mi3.11 mi18638+1626696+916696+9118265(Top 64%)6481(Top 53%)6481(Top 497%)
Half13.11 mi0.68 mi18575+636662+346662+3417682(Top 62%)6136(Top 50%)6136(Top 471%)
25K15.53 mi2.42 mi18294+2816524+1386524+13817088(Top 60%)5901(Top 48%)5901(Top 453%)
30K18.64 mi3.11 mi17792+5026282+2426282+24215918(Top 56%)5419(Top 44%)5419(Top 416%)
20M20.00 mi1.36 mi17571+2216187+956187+9515149(Top 53%)5129(Top 42%)5129(Top 394%)
21M21.00 mi1.00 mi17381+1906104+836104+8314664(Top 52%)4982(Top 41%)4982(Top 382%)
35K21.75 mi0.75 mi17181+2006008+966008+9612183(Top 43%)3757(Top 31%)3757(Top 288%)
23M23.00 mi1.25 mi16976+2055917+915917+9114289(Top 50%)4961(Top 41%)4961(Top 381%)
24M24.00 mi1.00 mi16836+1405864+535864+5314138(Top 50%)4904(Top 40%)4904(Top 376%)
40K24.85 mi0.85 mi16737+995835+295835+2914728(Top 52%)5382(Top 44%)5382(Top 413%)
25.2M25.20 mi0.35 mi16685+525815+205815+2013702(Top 48%)4882(Top 40%)4882(Top 375%)
Finish26.22 mi1.02 mi16625+605801+145801+1415421(Top 54%)5710(Top 47%)5710(Top 438%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 64%
×21story building
+97ft-345ft

Overall

18302

Females

6492

F50-54

6492

5K→10K

3.1 - 6.2 mi

Top 67%
×5story building
+79ft-138ft

Overall

18927

Females

6835

F50-54

6835

10K→15K

6.2 - 9.3 mi

Top 64%
×3story building
+67ft-78ft

Overall

18302

Females

6492

F50-54

6492

15K→20K

9.3 - 12.4 mi

Top 64%
×5story building
+106ft-86ft

Overall

18265

Females

6481

F50-54

6481

20K→Half

12.4 - 13.1 mi

Top 62%
×2story building
+19ft-37ft

Overall

17682

Females

6136

F50-54

6136

Half→25K

13.1 - 15.5 mi

Top 60%
×4story building
+66ft-88ft

Overall

17088

Females

5901

F50-54

5901

25K→30K

15.5 - 18.6 mi

Top 56%
×9story building
+181ft-148ft

Overall

15918

Females

5419

F50-54

5419

30K→20M

18.6 - 20.0 mi

Top 53%
×5story building
+64ft-50ft

Overall

15149

Females

5129

F50-54

5129

20M→21M

20.0 - 21.0 mi

Top 52%
×8story building
+106ft-24ft

Overall

14664

Females

4982

F50-54

4982

21M→35K

21.0 - 21.8 mi

Top 43%
×7story building
+17ft-86ft

Overall

12183

Females

3757

F50-54

3757

35K→23M

21.8 - 23.0 mi

Top 50%
×5story building
+23ft-63ft

Overall

14289

Females

4961

F50-54

4961

23M→24M

23.0 - 24.0 mi

Top 50%
×6story building
+12ft-82ft

Overall

14138

Females

4904

F50-54

4904

24M→40K

24.0 - 24.9 mi

Top 52%
×1story
+6ft-20ft

Overall

14728

Females

5382

F50-54

5382

40K→25.2M

24.9 - 25.2 mi

Top 48%
×1story
+13ft-16ft

Overall

13702

Females

4882

F50-54

4882

25.2M→Finish

25.2 - 26.2 mi

Top 54%
×2story building
+22ft-21ft

Overall

15421

Females

5710

F50-54

5710

Passing Analysis

Category:
Athletes Passed
3240
Passed By
612
Net Change
+2628
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19253
5K → 10K345182+163#19253#19090
10K → 15K35767+290#19090#18800
15K → 20K275113+162#18800#18638
20K → Half729+63#18638#18575
Half → 25K32140+281#18575#18294
25K → 30K53129+502#18294#17792
30K → 20M23514+221#17792#17571
20M → 21M21323+190#17571#17381
21M → 35K2044+200#17381#17181
35K → 23M22823+205#17181#16976
23M → 24M15515+140#16976#16836
24M → 40K13233+99#16836#16737
40K → 25.2M6412+52#16737#16685
25.2M → Finish10848+60#16685#16625
TOTALS3240612+2628
📊

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