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BOSTON MARATHON 2025

Sarah Czuprynski

Bib: 162•F

CA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 4%
Gender (Female)
#0 / 12228
Top 0.5%
Division (F18-39)
#0 / 5469
Top 1%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
17:54
Rank: #542
Start → 5K
17:54 | 5:46/mi
10K· 6.21 mi
36:01
Rank: #602 (-60)
5K → 10K
18:07 | 5:50/mi
15K· 9.32 mi
54:16
Rank: #612 (-10)
10K → 15K
18:15 | 5:52/mi
20K· 12.43 mi
1:13:09
Rank: #711 (-99)
15K → 20K
18:53 | 6:05/mi
Half· 13.11 mi
1:17:13
Rank: #719 (-8)
20K → Half
4:04 | 5:58/mi
25K· 15.53 mi
1:32:09
Rank: #776 (-57)
Half → 25K
14:56 | 6:10/mi
30K· 18.64 mi
1:52:13
Rank: #882 (-106)
25K → 30K
20:04 | 6:28/mi
20M
2:01:13
Rank: #921 (-39)
30K → 20M
9:00 | 6:37/mi
21M
2:08:18
Rank: #975 (-54)
20M → 21M
7:05 | 7:05/mi
35K· 21.75 mi
2:13:00
Rank: #973 (+2)
21M → 35K
4:42 | 6:17/mi
23M
2:21:26
Rank: #1010 (-37)
35K → 23M
8:26 | 6:44/mi
24M
2:28:08
Rank: #1064 (-54)
23M → 24M
6:42 | 6:42/mi
40K· 24.85 mi
2:33:59
Rank: #1105 (-41)
24M → 40K
5:51 | 6:51/mi
25.2M
2:36:39
Rank: #1133 (-28)
40K → 25.2M
2:40 | 7:44/mi
Finish· 26.22 mi
2:43:37
Rank: #1202 (-69)
25.2M → Finish
6:58 | 6:50/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:17:13
Pace5:53 /mi
2nd Half
Distance13.11 mi
Time1:26:24
Pace6:35 /mi
📊Positive Split: 11.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:04:5517:545:4617:54
5:46
-
10K
6.21 mi10:23:0236:015:4818:07
5:50
+0:04
15K
9.32 mi10:41:1754:165:4918:15
5:52
+0:02
20K
12.43 mi11:00:101:13:095:5318:53
6:05
+0:13
Half
13.11 mi11:04:141:17:135:534:04
5:58
-0:07
25K
15.53 mi11:19:101:32:095:5614:56
6:10
+0:12
30K
18.64 mi11:39:141:52:136:0120:04
6:28
+0:18
20M
20.00 mi11:48:142:01:136:049:00
6:37
+0:09
21M
21.00 mi11:55:192:08:186:077:05
7:05
+0:28
35K
21.75 mi12:00:012:13:006:074:42
6:17
-0:48
23M
23.00 mi12:08:272:21:266:098:26
6:44
+0:27
24M
24.00 mi12:15:092:28:086:106:42
6:42
-0:02
40K
24.85 mi12:21:002:33:596:125:51
6:51
+0:09
25.2M
25.20 mi12:23:402:36:396:132:40
7:44
+0:53
Finish
26.22 mi12:30:382:43:376:156:58
6:50
-0:54

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

5:46 /mi

Average Pace

6:15 /mi

Slowest Pace

7:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:32:09

56% of race

Time at Steady Pace

40:28

25% of race

Time at Slower Pace

31:00

19% of race

Average Pace: 6:14 /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 mi10:04:5517:545:4617:54
5:46
#542
10K
6.21 mi10:23:0236:015:4818:07
5:50
#602
15K
9.32 mi10:41:1754:165:4918:15
5:52
#612
20K
12.43 mi11:00:101:13:095:5318:53
6:05
#711
Half
13.11 mi11:04:141:17:135:534:04
5:58
#719
25K
15.53 mi11:19:101:32:095:5614:56
6:10
#776
30K
18.64 mi11:39:141:52:136:0120:04
6:28
#882
20M
20.00 mi11:48:142:01:136:049:00
6:37
#921
21M
21.00 mi11:55:192:08:186:077:05
7:05
#975
35K
21.75 mi12:00:012:13:006:074:42
6:17
#973
23M
23.00 mi12:08:272:21:266:098:26
6:44
#1010
24M
24.00 mi12:15:092:28:086:106:42
6:42
#1064
40K
24.85 mi12:21:002:33:596:125:51
6:51
#1105
25.2M
25.20 mi12:23:402:36:396:132:40
7:44
#1133
Finish
26.22 mi12:30:382:43:376:156:58
6:50
#1202
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi5423636710(Top 2%)44(Top 0.4%)44(Top 0.8%)
10K6.21 mi3.10 mi602-6042-642-6671(Top 2%)41(Top 0.3%)41(Top 0.7%)
15K9.32 mi3.11 mi612-1041+141+1710(Top 2%)44(Top 0.4%)44(Top 0.8%)
20K12.43 mi3.11 mi711-9945-445-41100(Top 4%)59(Top 0.5%)59(Top 1%)
Half13.11 mi0.68 mi719-845451059(Top 4%)52(Top 0.4%)52(Top 1.0%)
25K15.53 mi2.42 mi776-5746-146-11316(Top 5%)63(Top 0.5%)63(Top 1%)
30K18.64 mi3.11 mi882-10649-349-31814(Top 6%)83(Top 0.7%)83(Top 2%)
20M20.00 mi1.36 mi921-3952-352-32147(Top 8%)108(Top 0.9%)108(Top 2%)
21M21.00 mi1.00 mi975-5453-153-12633(Top 9%)169(Top 1%)169(Top 3%)
35K21.75 mi0.75 mi973+253531573(Top 6%)87(Top 0.7%)87(Top 2%)
23M23.00 mi1.25 mi1010-3754-154-12429(Top 9%)165(Top 1%)165(Top 3%)
24M24.00 mi1.00 mi1064-5456-256-23014(Top 11%)267(Top 2%)267(Top 5%)
40K24.85 mi0.85 mi1105-4158-258-23087(Top 11%)294(Top 2%)294(Top 5%)
25.2M25.20 mi0.35 mi1133-2860-260-24563(Top 16%)710(Top 6%)710(Top 13%)
Finish26.22 mi1.02 mi1202-6965-565-54734(Top 17%)759(Top 6%)759(Top 14%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 2%
×21stories
+97ft-345ft

Overall

710

Females

44

F18-39

44

5K→10K

3.1 - 6.2 mi

Top 2%
×5stories
+79ft-138ft

Overall

671

Females

41

F18-39

41

10K→15K

6.2 - 9.3 mi

Top 2%
×3stories
+67ft-78ft

Overall

710

Females

44

F18-39

44

15K→20K

9.3 - 12.4 mi

Top 4%
×5stories
+106ft-86ft

Overall

1100

Females

59

F18-39

59

20K→Half

12.4 - 13.1 mi

Top 4%
×2stories
+19ft-37ft

Overall

1059

Females

52

F18-39

52

Half→25K

13.1 - 15.5 mi

Top 5%
×4stories
+66ft-88ft

Overall

1316

Females

63

F18-39

63

25K→30K

15.5 - 18.6 mi

Top 6%
×9stories
+181ft-148ft

Overall

1814

Females

83

F18-39

83

30K→20M

18.6 - 20.0 mi

Top 8%
×5stories
+64ft-50ft

Overall

2147

Females

108

F18-39

108

20M→21M

20.0 - 21.0 mi

Top 9%
×8stories
+106ft-24ft

Overall

2633

Females

169

F18-39

169

21M→35K

21.0 - 21.8 mi

Top 6%
×7stories
+17ft-86ft

Overall

1573

Females

87

F18-39

87

35K→23M

21.8 - 23.0 mi

Top 9%
×5stories
+23ft-63ft

Overall

2429

Females

165

F18-39

165

23M→24M

23.0 - 24.0 mi

Top 11%
×6stories
+12ft-82ft

Overall

3014

Females

267

F18-39

267

24M→40K

24.0 - 24.9 mi

Top 11%
×1story
+6ft-20ft

Overall

3087

Females

294

F18-39

294

40K→25.2M

24.9 - 25.2 mi

Top 16%
×1story
+13ft-16ft

Overall

4563

Females

710

F18-39

710

25.2M→Finish

25.2 - 26.2 mi

Top 17%
×2stories
+22ft-21ft

Overall

4734

Females

759

F18-39

759

Passing Analysis

Category:
Athletes Passed
129
Passed By
789
Net Change
-660
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#542
5K → 10K1373-60#542#602
10K → 15K1222-10#602#612
15K → 20K6105-99#612#711
20K → Half311-8#711#719
Half → 25K1269-57#719#776
25K → 30K13119-106#776#882
30K → 20M1352-39#882#921
20M → 21M862-54#921#975
21M → 35K1412+2#975#973
35K → 23M1956-37#973#1010
23M → 24M357-54#1010#1064
24M → 40K546-41#1064#1105
40K → 25.2M028-28#1105#1133
25.2M → Finish877-69#1133#1202
TOTALS129789-660
📊

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