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BOSTON MARATHON 2025

Emma Diprizio

Bib: 26427•F

NH

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

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
8:44/mi
27:09
↑ 97↓ 3451.5%
10K· 6.21 mi
8:47/mi
54:27
↑ 79↓ 1380.4%
15K· 9.32 mi
8:46/mi
1:21:42
↑ 67↓ 78
20K· 12.43 mi
8:44/mi
1:48:50
↑ 106↓ 860.1%
Half· 13.11 mi
8:43/mi
1:54:47
↑ 19↓ 370.5%
25K· 15.53 mi
8:56/mi
2:16:26
↑ 66↓ 880.2%
30K· 18.64 mi
9:06/mi
2:44:43
↑ 181↓ 1480.2%
20M
9:16/mi
2:57:18
↑ 64↓ 500.2%
21M
9:56/mi
3:07:14
↑ 106↓ 241.6%
35K· 21.75 mi
9:12/mi
3:14:07
↑ 17↓ 861.7%
23M
9:36/mi
3:26:08
↑ 23↓ 630.6%
24M
9:27/mi
3:35:35
↓ 821.3%
40K· 24.85 mi
9:28/mi
3:43:41
↓ 200.3%
25.2M
10:09/mi
3:47:11
↑ 13↓ 160.2%
Finish· 26.22 mi
8:38/mi
3:55:59
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:54:47
Pace8:45 /mi
2nd Half
Distance13.11 mi
Time2:01:12
Pace9:15 /mi
📊Positive Split: 5.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:42:3827:098:4427:09
8:44
-
10K
6.21 mi12:09:5654:278:4627:18
8:47
+0:03
15K
9.32 mi12:37:111:21:428:4627:15
8:46
-0:01
20K
12.43 mi13:04:191:48:508:4527:08
8:44
-0:02
Half
13.11 mi13:10:161:54:478:455:57
8:43
-0:01
25K
15.53 mi13:31:552:16:268:4721:39
8:56
+0:13
30K
18.64 mi14:00:122:44:438:5028:17
9:06
+0:10
20M
20.00 mi14:12:472:57:188:5212:35
9:16
+0:10
21M
21.00 mi14:22:433:07:148:559:56
9:56
+0:40
35K
21.75 mi14:29:363:14:078:566:53
9:12
-0:44
23M
23.00 mi14:41:373:26:088:5812:01
9:36
+0:24
24M
24.00 mi14:51:043:35:358:599:27
9:27
-0:09
40K
24.85 mi14:59:103:43:419:008:06
9:28
+0:01
25.2M
25.20 mi15:02:403:47:119:013:30
10:09
+0:41
Finish
26.22 mi15:11:283:55:599:008:48
8:38
-1:31

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

8:38 /mi

Average Pace

9:00 /mi

Slowest Pace

10:09 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:30:32

89% of race

Time at Steady Pace

25:27

11% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:00 /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 mi11:42:3827:098:4427:09
8:44
#21202
10K
6.21 mi12:09:5654:278:4627:18
8:47
#21247
15K
9.32 mi12:37:111:21:428:4627:15
8:46
#21069
20K
12.43 mi13:04:191:48:508:4527:08
8:44
#20714
Half
13.11 mi13:10:161:54:478:455:57
8:43
#20702
25K
15.53 mi13:31:552:16:268:4721:39
8:56
#20534
30K
18.64 mi14:00:122:44:438:5028:17
9:06
#20075
20M
20.00 mi14:12:472:57:188:5212:35
9:16
#19911
21M
21.00 mi14:22:433:07:148:559:56
9:56
#19779
35K
21.75 mi14:29:363:14:078:566:53
9:12
#19757
23M
23.00 mi14:41:373:26:088:5812:01
9:36
#19712
24M
24.00 mi14:51:043:35:358:599:27
9:27
#19713
40K
24.85 mi14:59:103:43:419:008:06
9:28
#19688
25.2M
25.20 mi15:02:403:47:119:013:30
10:09
#19642
Finish
26.22 mi15:11:283:55:599:008:48
8:38
#19547
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi212028197819720884(Top 74%)7933(Top 65%)7933(Top 145%)
10K6.21 mi3.10 mi21247-458182+158182+1521352(Top 75%)8225(Top 67%)8225(Top 150%)
15K9.32 mi3.11 mi21069+1788075+1078075+10720884(Top 74%)7933(Top 65%)7933(Top 145%)
20K12.43 mi3.11 mi20714+3557880+1957880+19519601(Top 69%)7265(Top 59%)7265(Top 133%)
Half13.11 mi0.68 mi20702+127874+67874+620511(Top 72%)7759(Top 63%)7759(Top 142%)
25K15.53 mi2.42 mi20534+1687791+837791+8319584(Top 69%)7305(Top 60%)7305(Top 134%)
30K18.64 mi3.11 mi20075+4597562+2297562+22918206(Top 64%)6698(Top 55%)6698(Top 122%)
20M20.00 mi1.36 mi19911+1647494+687494+6818113(Top 64%)6782(Top 55%)6782(Top 124%)
21M21.00 mi1.00 mi19779+1327445+497445+4918064(Top 64%)6828(Top 56%)6828(Top 125%)
35K21.75 mi0.75 mi19757+227450-57450-519194(Top 68%)7554(Top 62%)7554(Top 138%)
23M23.00 mi1.25 mi19712+457457-77457-719079(Top 67%)7551(Top 62%)7551(Top 138%)
24M24.00 mi1.00 mi19713-17486-297486-2919446(Top 68%)7796(Top 64%)7796(Top 143%)
40K24.85 mi0.85 mi19688+257486748618630(Top 66%)7446(Top 61%)7446(Top 136%)
25.2M25.20 mi0.35 mi19642+467474+127474+1217750(Top 62%)7002(Top 57%)7002(Top 128%)
Finish26.22 mi1.02 mi19547+957439+357439+3517124(Top 60%)6629(Top 54%)6629(Top 121%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 74%
×21story building
+97ft-345ft

Overall

20884

Females

7933

F18-39

7933

5K→10K

3.1 - 6.2 mi

Top 75%
×5story building
+79ft-138ft

Overall

21352

Females

8225

F18-39

8225

10K→15K

6.2 - 9.3 mi

Top 74%
×3story building
+67ft-78ft

Overall

20884

Females

7933

F18-39

7933

15K→20K

9.3 - 12.4 mi

Top 69%
×5story building
+106ft-86ft

Overall

19601

Females

7265

F18-39

7265

20K→Half

12.4 - 13.1 mi

Top 72%
×2story building
+19ft-37ft

Overall

20511

Females

7759

F18-39

7759

Half→25K

13.1 - 15.5 mi

Top 69%
×4story building
+66ft-88ft

Overall

19584

Females

7305

F18-39

7305

25K→30K

15.5 - 18.6 mi

Top 64%
×9story building
+181ft-148ft

Overall

18206

Females

6698

F18-39

6698

30K→20M

18.6 - 20.0 mi

Top 64%
×5story building
+64ft-50ft

Overall

18113

Females

6782

F18-39

6782

20M→21M

20.0 - 21.0 mi

Top 64%
×8story building
+106ft-24ft

Overall

18064

Females

6828

F18-39

6828

21M→35K

21.0 - 21.8 mi

Top 68%
×7story building
+17ft-86ft

Overall

19194

Females

7554

F18-39

7554

35K→23M

21.8 - 23.0 mi

Top 67%
×5story building
+23ft-63ft

Overall

19079

Females

7551

F18-39

7551

23M→24M

23.0 - 24.0 mi

Top 68%
×6story building
+12ft-82ft

Overall

19446

Females

7796

F18-39

7796

24M→40K

24.0 - 24.9 mi

Top 66%
×1story
+6ft-20ft

Overall

18630

Females

7446

F18-39

7446

40K→25.2M

24.9 - 25.2 mi

Top 62%
×1story
+13ft-16ft

Overall

17750

Females

7002

F18-39

7002

25.2M→Finish

25.2 - 26.2 mi

Top 60%
×2story building
+22ft-21ft

Overall

17124

Females

6629

F18-39

6629

Passing Analysis

Category:
Athletes Passed
2533
Passed By
878
Net Change
+1655
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21202
5K → 10K254299-45#21202#21247
10K → 15K285107+178#21247#21069
15K → 20K39338+355#21069#20714
20K → Half3523+12#20714#20702
Half → 25K23668+168#20702#20534
25K → 30K49738+459#20534#20075
30K → 20M19329+164#20075#19911
20M → 21M15826+132#19911#19779
21M → 35K5735+22#19779#19757
35K → 23M11671+45#19757#19712
23M → 24M7374-1#19712#19713
24M → 40K7045+25#19713#19688
40K → 25.2M548+46#19688#19642
25.2M → Finish11217+95#19642#19547
TOTALS2533878+1655
📊

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