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BOSTON MARATHON 2025

Erin Rielly

Bib: 7375•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
22:59
Rank: #11329
Start → 5K
22:59 | 7:24/mi
10K· 6.21 mi
46:55
Rank: #12593 (-1264)
5K → 10K
23:56 | 7:42/mi
15K· 9.32 mi
1:11:26
Rank: #13450 (-857)
10K → 15K
24:31 | 7:53/mi
20K· 12.43 mi
1:39:25
Rank: #15927 (-2477)
15K → 20K
27:59 | 9:00/mi
Half· 13.11 mi
1:45:54
Rank: #16525 (-598)
20K → Half
6:29 | 9:30/mi
25K· 15.53 mi
2:19:31
Rank: #21476 (-4951)
Half → 25K
33:37 | 13:52/mi
30K· 18.64 mi
2:52:39
Rank: #22030 (-554)
25K → 30K
33:08 | 10:40/mi
20M
3:09:34
Rank: #22483 (-453)
30K → 20M
16:55 | 12:27/mi
21M
3:20:44
Rank: #22437 (+46)
20M → 21M
11:10 | 11:10/mi
35K· 21.75 mi
3:27:09
Rank: #22261 (+176)
21M → 35K
6:25 | 8:35/mi
23M
3:40:29
Rank: #22237 (+24)
35K → 23M
13:20 | 10:39/mi
24M
3:50:04
Rank: #22141 (+96)
23M → 24M
9:35 | 9:35/mi
40K· 24.85 mi
3:56:58
Rank: #21851 (+290)
24M → 40K
6:54 | 8:04/mi
25.2M
3:59:55
Rank: #21722 (+129)
40K → 25.2M
2:57 | 8:33/mi
Finish· 26.22 mi
4:07:34
Rank: #21413 (+309)
25.2M → Finish
7:39 | 7:30/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:45:54
Pace8:05 /mi
2nd Half
Distance13.11 mi
Time2:21:40
Pace10:48 /mi
📊Positive Split: 33.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:30:3522:597:2422:59
7:24
-
10K
6.21 mi10:54:3146:557:3323:56
7:42
+0:18
15K
9.32 mi11:19:021:11:267:4024:31
7:53
+0:11
20K
12.43 mi11:47:011:39:258:0027:59
9:00
+1:07
Half
13.11 mi11:53:301:45:548:056:29
9:30
+0:30
25K
15.53 mi12:27:072:19:318:5933:37
13:52
+4:22
30K
18.64 mi13:00:152:52:399:1633:08
10:40
-3:12
20M
20.00 mi13:17:103:09:349:2916:55
12:27
+1:47
21M
21.00 mi13:28:203:20:449:3411:10
11:10
-1:17
35K
21.75 mi13:34:453:27:099:326:25
8:35
-2:35
23M
23.00 mi13:48:053:40:299:3513:20
10:39
+2:04
24M
24.00 mi13:57:403:50:049:359:35
9:35
-1:04
40K
24.85 mi14:04:343:56:589:326:54
8:04
-1:31
25.2M
25.20 mi14:07:313:59:559:312:57
8:33
+0:29
Finish
26.22 mi14:15:104:07:349:277:39
7:30
-1:03

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

7:24 /mi

Average Pace

9:27 /mi

Slowest Pace

13:52 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:25:59

35% of race

Time at Steady Pace

53:25

22% of race

Time at Slower Pace

1:48:10

44% of race

Average Pace: 9:27 /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 mi10:30:3522:597:2422:59
7:24
#11329
10K
6.21 mi10:54:3146:557:3323:56
7:42
#12593
15K
9.32 mi11:19:021:11:267:4024:31
7:53
#13450
20K
12.43 mi11:47:011:39:258:0027:59
9:00
#15927
Half
13.11 mi11:53:301:45:548:056:29
9:30
#16525
25K
15.53 mi12:27:072:19:318:5933:37
13:52
#21476
30K
18.64 mi13:00:152:52:399:1633:08
10:40
#22030
20M
20.00 mi13:17:103:09:349:2916:55
12:27
#22483
21M
21.00 mi13:28:203:20:449:3411:10
11:10
#22437
35K
21.75 mi13:34:453:27:099:326:25
8:35
#22261
23M
23.00 mi13:48:053:40:299:3513:20
10:39
#22237
24M
24.00 mi13:57:403:50:049:359:35
9:35
#22141
40K
24.85 mi14:04:343:56:589:326:54
8:04
#21851
25.2M
25.20 mi14:07:313:59:559:312:57
8:33
#21722
Finish
26.22 mi14:15:104:07:349:277:39
7:30
#21413
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi113292452245215194(Top 53%)4690(Top 38%)4690(Top 86%)
10K6.21 mi3.10 mi12593-12643125-6733125-67313948(Top 49%)3935(Top 32%)3935(Top 72%)
15K9.32 mi3.11 mi13450-8573658-5333658-53315194(Top 53%)4690(Top 38%)4690(Top 86%)
20K12.43 mi3.11 mi15927-24775104-14465104-144621027(Top 74%)8077(Top 66%)8077(Top 148%)
Half13.11 mi0.68 mi16525-5985453-3495453-34923578(Top 83%)9465(Top 77%)9465(Top 173%)
25K15.53 mi2.42 mi21476-49518307-28548307-285427822(Top 98%)11903(Top 97%)11903(Top 218%)
30K18.64 mi3.11 mi22030-5548639-3328639-33223310(Top 82%)9497(Top 78%)9497(Top 174%)
20M20.00 mi1.36 mi22483-4538922-2838922-28325853(Top 91%)10929(Top 89%)10929(Top 200%)
21M21.00 mi1.00 mi22437+468908+148908+1421819(Top 77%)8876(Top 73%)8876(Top 162%)
35K21.75 mi0.75 mi22261+1768824+848824+8416012(Top 56%)5803(Top 47%)5803(Top 106%)
23M23.00 mi1.25 mi22237+248850-268850-2622402(Top 79%)9285(Top 76%)9285(Top 170%)
24M24.00 mi1.00 mi22141+968815+358815+3519945(Top 70%)8056(Top 66%)8056(Top 147%)
40K24.85 mi0.85 mi21851+2908678+1378678+13710723(Top 38%)3292(Top 27%)3292(Top 60%)
25.2M25.20 mi0.35 mi21722+1298617+618617+619278(Top 33%)2715(Top 22%)2715(Top 50%)
Finish26.22 mi1.02 mi21413+3098453+1648453+1649298(Top 33%)2685(Top 22%)2685(Top 49%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 53%
×21stories
+97ft-345ft

Overall

15194

Females

4690

F18-39

4690

5K→10K

3.1 - 6.2 mi

Top 49%
×5stories
+79ft-138ft

Overall

13948

Females

3935

F18-39

3935

10K→15K

6.2 - 9.3 mi

Top 53%
×3stories
+67ft-78ft

Overall

15194

Females

4690

F18-39

4690

15K→20K

9.3 - 12.4 mi

Top 74%
×5stories
+106ft-86ft

Overall

21027

Females

8077

F18-39

8077

20K→Half

12.4 - 13.1 mi

Top 83%
×2stories
+19ft-37ft

Overall

23578

Females

9465

F18-39

9465

Half→25K

13.1 - 15.5 mi

Top 98%
×4stories
+66ft-88ft

Overall

27822

Females

11903

F18-39

11903

25K→30K

15.5 - 18.6 mi

Top 82%
×9stories
+181ft-148ft

Overall

23310

Females

9497

F18-39

9497

30K→20M

18.6 - 20.0 mi

Top 91%
×5stories
+64ft-50ft

Overall

25853

Females

10929

F18-39

10929

20M→21M

20.0 - 21.0 mi

Top 77%
×8stories
+106ft-24ft

Overall

21819

Females

8876

F18-39

8876

21M→35K

21.0 - 21.8 mi

Top 56%
×7stories
+17ft-86ft

Overall

16012

Females

5803

F18-39

5803

35K→23M

21.8 - 23.0 mi

Top 79%
×5stories
+23ft-63ft

Overall

22402

Females

9285

F18-39

9285

23M→24M

23.0 - 24.0 mi

Top 70%
×6stories
+12ft-82ft

Overall

19945

Females

8056

F18-39

8056

24M→40K

24.0 - 24.9 mi

Top 38%
×1story
+6ft-20ft

Overall

10723

Females

3292

F18-39

3292

40K→25.2M

24.9 - 25.2 mi

Top 33%
×1story
+13ft-16ft

Overall

9278

Females

2715

F18-39

2715

25.2M→Finish

25.2 - 26.2 mi

Top 33%
×2stories
+22ft-21ft

Overall

9298

Females

2685

F18-39

2685

Passing Analysis

Category:
Athletes Passed
1355
Passed By
11439
Net Change
-10084
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11329
5K → 10K261290-1264#11329#12593
10K → 15K38895-857#12593#13450
15K → 20K132490-2477#13450#15927
20K → Half1599-598#15927#16525
Half → 25K04951-4951#16525#21476
25K → 30K69623-554#21476#22030
30K → 20M21474-453#22030#22483
20M → 21M9246+46#22483#22437
21M → 35K1771+176#22437#22261
35K → 23M9066+24#22261#22237
23M → 24M1004+96#22237#22141
24M → 40K2900+290#22141#21851
40K → 25.2M1290+129#21851#21722
25.2M → Finish3090+309#21722#21413
TOTALS135511439-10084
📊

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