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BOSTON MARATHON 2025

Rebeca Ehrnrooth

Bib: 21533•F

NC

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 41%
Masters (Masters Women)
#0 / 6759
Top 27%
Division (F45-49)
#0 / 1813
Top 32%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:06
Rank: #17223
Start → 5K
25:06 | 8:05/mi
10K· 6.21 mi
50:11
Rank: #17086 (+137)
5K → 10K
25:05 | 8:04/mi
15K· 9.32 mi
1:15:07
Rank: #16775 (+311)
10K → 15K
24:56 | 8:02/mi
20K· 12.43 mi
1:40:22
Rank: #16505 (+270)
15K → 20K
25:15 | 8:08/mi
Half· 13.11 mi
1:45:52
Rank: #16502 (+3)
20K → Half
5:30 | 8:04/mi
25K· 15.53 mi
2:06:00
Rank: #16392 (+110)
Half → 25K
20:08 | 8:18/mi
30K· 18.64 mi
2:32:37
Rank: #16137 (+255)
25K → 30K
26:37 | 8:34/mi
20M
2:44:27
Rank: #16020 (+117)
30K → 20M
11:50 | 8:42/mi
21M
2:53:34
Rank: #15850 (+170)
20M → 21M
9:07 | 9:07/mi
35K· 21.75 mi
2:59:44
Rank: #15751 (+99)
21M → 35K
6:10 | 8:15/mi
23M
3:10:26
Rank: #15585 (+166)
35K → 23M
10:42 | 8:33/mi
24M
3:18:41
Rank: #15463 (+122)
23M → 24M
8:15 | 8:15/mi
40K· 24.85 mi
3:25:48
Rank: #15319 (+144)
24M → 40K
7:07 | 8:19/mi
25.2M
3:28:59
Rank: #15270 (+49)
40K → 25.2M
3:11 | 9:14/mi
Finish· 26.22 mi
3:37:11
Rank: #15188 (+82)
25.2M → Finish
8:12 | 8:03/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:45:52
Pace8:05 /mi
2nd Half
Distance13.11 mi
Time1:51:19
Pace8:29 /mi
📊Positive Split: 5.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:0925:068:0525:06
8:05
-
10K
6.21 mi11:45:1450:118:0525:05
8:04
-0:01
15K
9.32 mi12:10:101:15:078:0424:56
8:02
-0:02
20K
12.43 mi12:35:251:40:228:0525:15
8:08
+0:06
Half
13.11 mi12:40:551:45:528:055:30
8:04
-0:04
25K
15.53 mi13:01:032:06:008:0720:08
8:18
+0:14
30K
18.64 mi13:27:402:32:378:1126:37
8:34
+0:16
20M
20.00 mi13:39:302:44:278:1311:50
8:42
+0:08
21M
21.00 mi13:48:372:53:348:169:07
9:07
+0:25
35K
21.75 mi13:54:472:59:448:166:10
8:15
-0:52
23M
23.00 mi14:05:293:10:268:1710:42
8:33
+0:18
24M
24.00 mi14:13:443:18:418:178:15
8:15
-0:18
40K
24.85 mi14:20:513:25:488:177:07
8:19
+0:04
25.2M
25.20 mi14:24:023:28:598:183:11
9:14
+0:55
Finish
26.22 mi14:32:143:37:118:178:12
8:03
-1:11

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

8:02 /mi

Average Pace

8:17 /mi

Slowest Pace

9:14 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:24:53

94% of race

Time at Steady Pace

12:18

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:17 /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 mi11:20:0925:068:0525:06
8:05
#17223
10K
6.21 mi11:45:1450:118:0525:05
8:04
#17086
15K
9.32 mi12:10:101:15:078:0424:56
8:02
#16775
20K
12.43 mi12:35:251:40:228:0525:15
8:08
#16505
Half
13.11 mi12:40:551:45:528:055:30
8:04
#16502
25K
15.53 mi13:01:032:06:008:0720:08
8:18
#16392
30K
18.64 mi13:27:402:32:378:1126:37
8:34
#16137
20M
20.00 mi13:39:302:44:278:1311:50
8:42
#16020
21M
21.00 mi13:48:372:53:348:169:07
9:07
#15850
35K
21.75 mi13:54:472:59:448:166:10
8:15
#15751
23M
23.00 mi14:05:293:10:268:1710:42
8:33
#15585
24M
24.00 mi14:13:443:18:418:178:15
8:15
#15463
40K
24.85 mi14:20:513:25:488:177:07
8:19
#15319
25.2M
25.20 mi14:24:023:28:598:183:11
9:14
#15270
Finish
26.22 mi14:32:143:37:118:178:12
8:03
#15188
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi172235870587016247(Top 57%)5281(Top 43%)5281(Top 291%)
10K6.21 mi3.10 mi17086+1375775+955775+9517023(Top 60%)5715(Top 47%)5715(Top 315%)
15K9.32 mi3.11 mi16775+3115596+1795596+17916247(Top 57%)5281(Top 43%)5281(Top 291%)
20K12.43 mi3.11 mi16505+2705436+1605436+16015847(Top 56%)5126(Top 42%)5126(Top 283%)
Half13.11 mi0.68 mi16502+35438-25438-216397(Top 58%)5402(Top 44%)5402(Top 298%)
25K15.53 mi2.42 mi16392+1105401+375401+3715953(Top 56%)5285(Top 43%)5285(Top 292%)
30K18.64 mi3.11 mi16137+2555306+955306+9515192(Top 53%)5011(Top 41%)5011(Top 276%)
20M20.00 mi1.36 mi16020+1175278+285278+2815134(Top 53%)5114(Top 42%)5114(Top 282%)
21M21.00 mi1.00 mi15850+1705217+615217+6114218(Top 50%)4748(Top 39%)4748(Top 262%)
35K21.75 mi0.75 mi15751+995185+325185+3213942(Top 49%)4654(Top 38%)4654(Top 257%)
23M23.00 mi1.25 mi15585+1665121+645121+6413619(Top 48%)4603(Top 38%)4603(Top 254%)
24M24.00 mi1.00 mi15463+1225069+525069+5212951(Top 46%)4301(Top 35%)4301(Top 237%)
40K24.85 mi0.85 mi15319+1445023+465023+4612343(Top 43%)4112(Top 34%)4112(Top 227%)
25.2M25.20 mi0.35 mi15270+495012+115012+1113174(Top 46%)4593(Top 38%)4593(Top 253%)
Finish26.22 mi1.02 mi15188+824983+294983+2913232(Top 47%)4572(Top 37%)4572(Top 252%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 57%
×21stories
+97ft-345ft

Overall

16247

Females

5281

F45-49

5281

5K→10K

3.1 - 6.2 mi

Top 60%
×5stories
+79ft-138ft

Overall

17023

Females

5715

F45-49

5715

10K→15K

6.2 - 9.3 mi

Top 57%
×3stories
+67ft-78ft

Overall

16247

Females

5281

F45-49

5281

15K→20K

9.3 - 12.4 mi

Top 56%
×5stories
+106ft-86ft

Overall

15847

Females

5126

F45-49

5126

20K→Half

12.4 - 13.1 mi

Top 58%
×2stories
+19ft-37ft

Overall

16397

Females

5402

F45-49

5402

Half→25K

13.1 - 15.5 mi

Top 56%
×4stories
+66ft-88ft

Overall

15953

Females

5285

F45-49

5285

25K→30K

15.5 - 18.6 mi

Top 53%
×9stories
+181ft-148ft

Overall

15192

Females

5011

F45-49

5011

30K→20M

18.6 - 20.0 mi

Top 53%
×5stories
+64ft-50ft

Overall

15134

Females

5114

F45-49

5114

20M→21M

20.0 - 21.0 mi

Top 50%
×8stories
+106ft-24ft

Overall

14218

Females

4748

F45-49

4748

21M→35K

21.0 - 21.8 mi

Top 49%
×7stories
+17ft-86ft

Overall

13942

Females

4654

F45-49

4654

35K→23M

21.8 - 23.0 mi

Top 48%
×5stories
+23ft-63ft

Overall

13619

Females

4603

F45-49

4603

23M→24M

23.0 - 24.0 mi

Top 46%
×6stories
+12ft-82ft

Overall

12951

Females

4301

F45-49

4301

24M→40K

24.0 - 24.9 mi

Top 43%
×1story
+6ft-20ft

Overall

12343

Females

4112

F45-49

4112

40K→25.2M

24.9 - 25.2 mi

Top 46%
×1story
+13ft-16ft

Overall

13174

Females

4593

F45-49

4593

25.2M→Finish

25.2 - 26.2 mi

Top 47%
×2stories
+22ft-21ft

Overall

13232

Females

4572

F45-49

4572

Passing Analysis

Category:
Athletes Passed
2839
Passed By
804
Net Change
+2035
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17223
5K → 10K367230+137#17223#17086
10K → 15K38170+311#17086#16775
15K → 20K35484+270#16775#16505
20K → Half4037+3#16505#16502
Half → 25K20393+110#16502#16392
25K → 30K355100+255#16392#16137
30K → 20M17053+117#16137#16020
20M → 21M20232+170#16020#15850
21M → 35K11516+99#15850#15751
35K → 23M19024+166#15751#15585
23M → 24M13917+122#15585#15463
24M → 40K16016+144#15463#15319
40K → 25.2M556+49#15319#15270
25.2M → Finish10826+82#15270#15188
TOTALS2839804+2035
📊

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