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BOSTON MARATHON 2025

Monia De Rosa

Bib: 21331•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Top 48%
Division (F50-54)
#0 / 1303
Top 45%
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
9:38/mi
29:55
↑ 97↓ 3451.5%
10K· 6.21 mi
8:50/mi
57:21
↑ 79↓ 1380.4%
15K· 9.32 mi
8:35/mi
1:24:01
↑ 67↓ 78
20K· 12.43 mi
8:21/mi
1:49:59
↑ 106↓ 860.1%
Half· 13.11 mi
8:14/mi
1:55:36
↑ 19↓ 370.5%
25K· 15.53 mi
8:30/mi
2:16:12
↑ 66↓ 880.2%
30K· 18.64 mi
8:53/mi
2:43:49
↑ 181↓ 1480.2%
20M
8:59/mi
2:56:01
↑ 64↓ 500.2%
21M
9:31/mi
3:05:32
↑ 106↓ 241.6%
35K· 21.75 mi
8:41/mi
3:12:02
↑ 17↓ 861.7%
23M
8:56/mi
3:23:13
↑ 23↓ 630.6%
24M
8:42/mi
3:31:55
↓ 821.3%
40K· 24.85 mi
8:50/mi
3:39:28
↓ 200.3%
25.2M
9:20/mi
3:42:41
↑ 13↓ 160.2%
Finish· 26.22 mi
8:38/mi
3:51:29
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:55:36
Pace8:49 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:55:53
Pace8:50 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:23:5529:559:3829:55
9:38
-
10K
6.21 mi11:51:2157:219:1427:26
8:50
-0:48
15K
9.32 mi12:18:011:24:019:0126:40
8:35
-0:15
20K
12.43 mi12:43:591:49:598:5125:58
8:21
-0:14
Half
13.11 mi12:49:361:55:368:495:37
8:14
-0:07
25K
15.53 mi13:10:122:16:128:4620:36
8:30
+0:16
30K
18.64 mi13:37:492:43:498:4727:37
8:53
+0:23
20M
20.00 mi13:50:012:56:018:4812:12
8:59
+0:06
21M
21.00 mi13:59:323:05:328:509:31
9:31
+0:32
35K
21.75 mi14:06:023:12:028:506:30
8:41
-0:50
23M
23.00 mi14:17:133:23:138:5011:11
8:56
+0:15
24M
24.00 mi14:25:553:31:558:508:42
8:42
-0:14
40K
24.85 mi14:33:283:39:288:507:33
8:50
+0:08
25.2M
25.20 mi14:36:413:42:418:503:13
9:20
+0:30
Finish
26.22 mi14:45:293:51:298:508:48
8:38
-0:42

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

8:14 /mi

Average Pace

8:50 /mi

Slowest Pace

9:38 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:08:50

82% of race

Time at Steady Pace

42:39

18% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:50 /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 mi11:23:5529:559:3829:55
9:38
#24628
10K
6.21 mi11:51:2157:219:1427:26
8:50
#23313
15K
9.32 mi12:18:011:24:019:0126:40
8:35
#22337
20K
12.43 mi12:43:591:49:598:5125:58
8:21
#21176
Half
13.11 mi12:49:361:55:368:495:37
8:14
#21018
25K
15.53 mi13:10:122:16:128:4620:36
8:30
#20448
30K
18.64 mi13:37:492:43:498:4727:37
8:53
#19806
20M
20.00 mi13:50:012:56:018:4812:12
8:59
#19567
21M
21.00 mi13:59:323:05:328:509:31
9:31
#19364
35K
21.75 mi14:06:023:12:028:506:30
8:41
#19273
23M
23.00 mi14:17:133:23:138:5011:11
8:56
#19079
24M
24.00 mi14:25:553:31:558:508:42
8:42
#18935
40K
24.85 mi14:33:283:39:288:507:33
8:50
#18793
25.2M
25.20 mi14:36:413:42:418:503:13
9:20
#18709
Finish
26.22 mi14:45:293:51:298:508:48
8:38
#18639
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi24628100251002519835(Top 70%)7351(Top 60%)7351(Top 564%)
10K6.21 mi3.10 mi23313+13159321+7049321+70421549(Top 76%)8337(Top 68%)8337(Top 640%)
15K9.32 mi3.11 mi22337+9768772+5498772+54919835(Top 70%)7351(Top 60%)7351(Top 564%)
20K12.43 mi3.11 mi21176+11618126+6468126+64617300(Top 61%)5945(Top 49%)5945(Top 456%)
Half13.11 mi0.68 mi21018+1588039+878039+8717566(Top 62%)6092(Top 50%)6092(Top 468%)
25K15.53 mi2.42 mi20448+5707741+2987741+29817201(Top 61%)5978(Top 49%)5978(Top 459%)
30K18.64 mi3.11 mi19806+6427408+3337408+33317102(Top 60%)6083(Top 50%)6083(Top 467%)
20M20.00 mi1.36 mi19567+2397299+1097299+10916708(Top 59%)5986(Top 49%)5986(Top 459%)
21M21.00 mi1.00 mi19364+2037211+887211+8816183(Top 57%)5810(Top 48%)5810(Top 446%)
35K21.75 mi0.75 mi19273+917171+407171+4016668(Top 59%)6164(Top 50%)6164(Top 473%)
23M23.00 mi1.25 mi19079+1947090+817090+8115899(Top 56%)5837(Top 48%)5837(Top 448%)
24M24.00 mi1.00 mi18935+1447038+527038+5215794(Top 56%)5812(Top 48%)5812(Top 446%)
40K24.85 mi0.85 mi18793+1426988+506988+5015401(Top 54%)5758(Top 47%)5758(Top 442%)
25.2M25.20 mi0.35 mi18709+846952+366952+3613729(Top 48%)4909(Top 40%)4909(Top 377%)
Finish26.22 mi1.02 mi18639+706923+296923+2917118(Top 60%)6623(Top 54%)6623(Top 508%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 70%
×21story building
+97ft-345ft

Overall

19835

Females

7351

F50-54

7351

5K→10K

3.1 - 6.2 mi

Top 76%
×5story building
+79ft-138ft

Overall

21549

Females

8337

F50-54

8337

10K→15K

6.2 - 9.3 mi

Top 70%
×3story building
+67ft-78ft

Overall

19835

Females

7351

F50-54

7351

15K→20K

9.3 - 12.4 mi

Top 61%
×5story building
+106ft-86ft

Overall

17300

Females

5945

F50-54

5945

20K→Half

12.4 - 13.1 mi

Top 62%
×2story building
+19ft-37ft

Overall

17566

Females

6092

F50-54

6092

Half→25K

13.1 - 15.5 mi

Top 61%
×4story building
+66ft-88ft

Overall

17201

Females

5978

F50-54

5978

25K→30K

15.5 - 18.6 mi

Top 60%
×9story building
+181ft-148ft

Overall

17102

Females

6083

F50-54

6083

30K→20M

18.6 - 20.0 mi

Top 59%
×5story building
+64ft-50ft

Overall

16708

Females

5986

F50-54

5986

20M→21M

20.0 - 21.0 mi

Top 57%
×8story building
+106ft-24ft

Overall

16183

Females

5810

F50-54

5810

21M→35K

21.0 - 21.8 mi

Top 59%
×7story building
+17ft-86ft

Overall

16668

Females

6164

F50-54

6164

35K→23M

21.8 - 23.0 mi

Top 56%
×5story building
+23ft-63ft

Overall

15899

Females

5837

F50-54

5837

23M→24M

23.0 - 24.0 mi

Top 56%
×6story building
+12ft-82ft

Overall

15794

Females

5812

F50-54

5812

24M→40K

24.0 - 24.9 mi

Top 54%
×1story
+6ft-20ft

Overall

15401

Females

5758

F50-54

5758

40K→25.2M

24.9 - 25.2 mi

Top 48%
×1story
+13ft-16ft

Overall

13729

Females

4909

F50-54

4909

25.2M→Finish

25.2 - 26.2 mi

Top 60%
×2story building
+22ft-21ft

Overall

17118

Females

6623

F50-54

6623

Passing Analysis

Category:
Athletes Passed
6093
Passed By
104
Net Change
+5989
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24628
5K → 10K13205+1315#24628#23313
10K → 15K9771+976#23313#22337
15K → 20K11621+1161#22337#21176
20K → Half1591+158#21176#21018
Half → 25K5733+570#21018#20448
25K → 30K6519+642#20448#19806
30K → 20M25011+239#19806#19567
20M → 21M21411+203#19567#19364
21M → 35K954+91#19364#19273
35K → 23M20713+194#19273#19079
23M → 24M1539+144#19079#18935
24M → 40K15412+142#18935#18793
40K → 25.2M851+84#18793#18709
25.2M → Finish9323+70#18709#18639
TOTALS6093104+5989
📊

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