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BOSTON MARATHON 2025

Rosemary Burns

Bib: 28288•F

MA

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

Start
0:00:00
Race begins
5K· 3.11 mi
26:47
Rank: #20584
Start → 5K
8:37/mi
26:47 split
10K· 6.21 mi
54:01
Rank: #20883 (-299)
5K → 10K
8:46/mi
27:14 split
15K· 9.32 mi
1:21:19
Rank: #20877 (+6)
10K → 15K
8:47/mi
27:18 split
20K· 12.43 mi
1:49:15
Rank: #20880 (-3)
15K → 20K
8:59/mi
27:56 split
Half· 13.11 mi
1:55:14
Rank: #20873 (+7)
20K → Half
8:46/mi
5:59 split
25K· 15.53 mi
2:18:01
Rank: #21020 (-147)
Half → 25K
9:24/mi
22:47 split
30K· 18.64 mi
2:47:58
Rank: #20925 (+95)
25K → 30K
9:38/mi
29:57 split
20M
3:01:33
Rank: #20931 (-6)
30K → 20M
10:00/mi
13:35 split
21M
3:11:59
Rank: #20837 (+94)
20M → 21M
10:26/mi
10:26 split
35K· 21.75 mi
3:19:17
Rank: #20874 (-37)
21M → 35K
9:45/mi
7:18 split
23M
3:31:49
Rank: #20870 (+4)
35K → 23M
10:01/mi
12:32 split
24M
3:41:34
Rank: #20876 (-6)
23M → 24M
9:45/mi
9:45 split
40K· 24.85 mi
3:49:43
Rank: #20791 (+85)
24M → 40K
9:32/mi
8:09 split
25.2M
3:53:16
Rank: #20751 (+40)
40K → 25.2M
10:18/mi
3:33 split
Finish· 26.22 mi
4:02:29
Rank: #20706 (+45)
25.2M → Finish
9:03/mi
9:13 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:55:14
Pace8:47 /mi
2nd Half
Distance13.11 mi
Time2:07:15
Pace9:42 /mi
📊Positive Split: 10.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:44:0826:478:3726:47
8:37
-
10K
6.21 mi12:11:2254:018:4227:14
8:46
+0:09
15K
9.32 mi12:38:401:21:198:4327:18
8:47
+0:01
20K
12.43 mi13:06:361:49:158:4727:56
8:59
+0:12
Half
13.11 mi13:12:351:55:148:475:59
8:46
-0:13
25K
15.53 mi13:35:222:18:018:5322:47
9:24
+0:38
30K
18.64 mi14:05:192:47:589:0129:57
9:38
+0:14
20M
20.00 mi14:18:543:01:339:0513:35
10:00
+0:22
21M
21.00 mi14:29:203:11:599:0910:26
10:26
+0:26
35K
21.75 mi14:36:383:19:179:107:18
9:45
-0:41
23M
23.00 mi14:49:103:31:499:1312:32
10:01
+0:16
24M
24.00 mi14:58:553:41:349:149:45
9:45
-0:16
40K
24.85 mi15:07:043:49:439:158:09
9:32
-0:13
25.2M
25.20 mi15:10:373:53:169:153:33
10:18
+0:46
Finish
26.22 mi15:19:504:02:299:159:13
9:03
-1:15

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

8:37 /mi

Average Pace

9:15 /mi

Slowest Pace

10:26 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:04:27

51% of race

Time at Steady Pace

1:17:56

32% of race

Time at Slower Pace

40:06

17% of race

Average Pace: 9:15 /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 mi11:44:0826:478:3726:47
8:37
#20584
10K
6.21 mi12:11:2254:018:4227:14
8:46
#20883
15K
9.32 mi12:38:401:21:198:4327:18
8:47
#20877
20K
12.43 mi13:06:361:49:158:4727:56
8:59
#20880
Half
13.11 mi13:12:351:55:148:475:59
8:46
#20873
25K
15.53 mi13:35:222:18:018:5322:47
9:24
#21020
30K
18.64 mi14:05:192:47:589:0129:57
9:38
#20925
20M
20.00 mi14:18:543:01:339:0513:35
10:00
#20931
21M
21.00 mi14:29:203:11:599:0910:26
10:26
#20837
35K
21.75 mi14:36:383:19:179:107:18
9:45
#20874
23M
23.00 mi14:49:103:31:499:1312:32
10:01
#20870
24M
24.00 mi14:58:553:41:349:149:45
9:45
#20876
40K
24.85 mi15:07:043:49:439:158:09
9:32
#20791
25.2M
25.20 mi15:10:373:53:169:153:33
10:18
#20751
Finish
26.22 mi15:19:504:02:299:159:13
9:03
#20706
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi205847854785420974(Top 74%)7988(Top 65%)7988(Top 146%)
10K6.21 mi3.10 mi20883-2997991-1377991-13721237(Top 75%)8164(Top 67%)8164(Top 149%)
15K9.32 mi3.11 mi20877+67972+197972+1920974(Top 74%)7988(Top 65%)7988(Top 146%)
20K12.43 mi3.11 mi20880-37969+37969+320928(Top 74%)8013(Top 66%)8013(Top 147%)
Half13.11 mi0.68 mi20873+77963+67963+620816(Top 73%)7942(Top 65%)7942(Top 145%)
25K15.53 mi2.42 mi21020-1478048-858048-8521537(Top 76%)8383(Top 69%)8383(Top 153%)
30K18.64 mi3.11 mi20925+958047+18047+120517(Top 72%)7942(Top 65%)7942(Top 145%)
20M20.00 mi1.36 mi20931-68057-108057-1020933(Top 74%)8323(Top 68%)8323(Top 152%)
21M21.00 mi1.00 mi20837+948031+268031+2619811(Top 70%)7804(Top 64%)7804(Top 143%)
35K21.75 mi0.75 mi20874-378071-408071-4021203(Top 75%)8611(Top 70%)8611(Top 157%)
23M23.00 mi1.25 mi20870+48091-208091-2020532(Top 72%)8313(Top 68%)8313(Top 152%)
24M24.00 mi1.00 mi20876-68115-248115-2420581(Top 72%)8382(Top 69%)8382(Top 153%)
40K24.85 mi0.85 mi20791+858082+338082+3318866(Top 66%)7566(Top 62%)7566(Top 138%)
25.2M25.20 mi0.35 mi20751+408073+98073+918331(Top 65%)7319(Top 60%)7319(Top 134%)
Finish26.22 mi1.02 mi20706+458058+158058+1519284(Top 68%)7761(Top 63%)7761(Top 142%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 74%
×21story building
+97ft-345ft

Overall

20974

Females

7988

F18-39

7988

5K→10K

3.1 - 6.2 mi

Top 75%
×5story building
+79ft-138ft

Overall

21237

Females

8164

F18-39

8164

10K→15K

6.2 - 9.3 mi

Top 74%
×3story building
+67ft-78ft

Overall

20974

Females

7988

F18-39

7988

15K→20K

9.3 - 12.4 mi

Top 74%
×5story building
+106ft-86ft

Overall

20928

Females

8013

F18-39

8013

20K→Half

12.4 - 13.1 mi

Top 73%
×2story building
+19ft-37ft

Overall

20816

Females

7942

F18-39

7942

Half→25K

13.1 - 15.5 mi

Top 76%
×4story building
+66ft-88ft

Overall

21537

Females

8383

F18-39

8383

25K→30K

15.5 - 18.6 mi

Top 72%
×9story building
+181ft-148ft

Overall

20517

Females

7942

F18-39

7942

30K→20M

18.6 - 20.0 mi

Top 74%
×5story building
+64ft-50ft

Overall

20933

Females

8323

F18-39

8323

20M→21M

20.0 - 21.0 mi

Top 70%
×8story building
+106ft-24ft

Overall

19811

Females

7804

F18-39

7804

21M→35K

21.0 - 21.8 mi

Top 75%
×7story building
+17ft-86ft

Overall

21203

Females

8611

F18-39

8611

35K→23M

21.8 - 23.0 mi

Top 72%
×5story building
+23ft-63ft

Overall

20532

Females

8313

F18-39

8313

23M→24M

23.0 - 24.0 mi

Top 72%
×6story building
+12ft-82ft

Overall

20581

Females

8382

F18-39

8382

24M→40K

24.0 - 24.9 mi

Top 66%
×1story
+6ft-20ft

Overall

18866

Females

7566

F18-39

7566

40K→25.2M

24.9 - 25.2 mi

Top 65%
×1story
+13ft-16ft

Overall

18331

Females

7319

F18-39

7319

25.2M→Finish

25.2 - 26.2 mi

Top 68%
×2story building
+22ft-21ft

Overall

19284

Females

7761

F18-39

7761

Passing Analysis

Category:
Athletes Passed
1584
Passed By
1706
Net Change
-122
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20584
5K → 10K166465-299#20584#20883
10K → 15K190184+6#20883#20877
15K → 20K191194-3#20877#20880
20K → Half3730+7#20880#20873
Half → 25K106253-147#20873#21020
25K → 30K250155+95#21020#20925
30K → 20M99105-6#20925#20931
20M → 21M14046+94#20931#20837
21M → 35K4481-37#20837#20874
35K → 23M9894+4#20874#20870
23M → 24M5359-6#20870#20876
24M → 40K9712+85#20876#20791
40K → 25.2M477+40#20791#20751
25.2M → Finish6621+45#20751#20706
TOTALS15841706-122
📊

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