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BOSTON MARATHON 2025

Siobhan Oreilly

Bib: 31899•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

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
8:59/mi
27:56
↑ 97↓ 3451.5%
10K· 6.21 mi
8:54/mi
55:34
↑ 79↓ 1380.4%
15K· 9.32 mi
8:49/mi
1:22:59
↑ 67↓ 78
20K· 12.43 mi
9:01/mi
1:51:01
↑ 106↓ 860.1%
Half· 13.11 mi
9:02/mi
1:57:11
↑ 19↓ 370.5%
25K· 15.53 mi
10:02/mi
2:21:31
↑ 66↓ 880.2%
30K· 18.64 mi
10:50/mi
2:55:12
↑ 181↓ 1480.2%
20M
10:37/mi
3:09:37
↑ 64↓ 500.2%
21M
13:06/mi
3:22:43
↑ 106↓ 241.6%
35K· 21.75 mi
11:06/mi
3:31:01
↑ 17↓ 861.7%
23M
10:27/mi
3:44:06
↑ 23↓ 630.6%
24M
10:40/mi
3:54:46
↓ 821.3%
40K· 24.85 mi
10:28/mi
4:03:43
↓ 200.3%
25.2M
12:57/mi
4:08:11
↑ 13↓ 160.2%
Finish· 26.22 mi
9:46/mi
4:18:08
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:57:11
Pace8:56 /mi
2nd Half
Distance13.11 mi
Time2:20:57
Pace10:45 /mi
📊Positive Split: 20.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:52:0727:568:5927:56
8:59
-
10K
6.21 mi12:19:4555:348:5727:38
8:54
-0:05
15K
9.32 mi12:47:101:22:598:5427:25
8:49
-0:05
20K
12.43 mi13:15:121:51:018:5628:02
9:01
+0:12
Half
13.11 mi13:21:221:57:118:566:10
9:02
+0:01
25K
15.53 mi13:45:422:21:319:0724:20
10:02
+1:00
30K
18.64 mi14:19:232:55:129:2433:41
10:50
+0:48
20M
20.00 mi14:33:483:09:379:2914:25
10:37
-0:13
21M
21.00 mi14:46:543:22:439:3913:06
13:06
+2:29
35K
21.75 mi14:55:123:31:019:428:18
11:06
-2:00
23M
23.00 mi15:08:173:44:069:4513:05
10:27
-0:39
24M
24.00 mi15:18:573:54:469:4710:40
10:40
+0:13
40K
24.85 mi15:27:544:03:439:488:57
10:28
-0:12
25.2M
25.20 mi15:32:224:08:119:514:28
12:57
+2:29
Finish
26.22 mi15:42:194:18:089:519:57
9:46
-3:11

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

8:49 /mi

Average Pace

9:51 /mi

Slowest Pace

13:06 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:07:08

49% of race

Time at Steady Pace

1:53:26

44% of race

Time at Slower Pace

17:34

7% of race

Average Pace: 9:51 /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 mi11:52:0727:568:5927:56
8:59
#22383
10K
6.21 mi12:19:4555:348:5727:38
8:54
#22171
15K
9.32 mi12:47:101:22:598:5427:25
8:49
#21832
20K
12.43 mi13:15:121:51:018:5628:02
9:01
#21634
Half
13.11 mi13:21:221:57:118:566:10
9:02
#21638
25K
15.53 mi13:45:422:21:319:0724:20
10:02
#22041
30K
18.64 mi14:19:232:55:129:2433:41
10:50
#22485
20M
20.00 mi14:33:483:09:379:2914:25
10:37
#22491
21M
21.00 mi14:46:543:22:439:3913:06
13:06
#22734
35K
21.75 mi14:55:123:31:019:428:18
11:06
#22806
23M
23.00 mi15:08:173:44:069:4513:05
10:27
#22742
24M
24.00 mi15:18:573:54:469:4710:40
10:40
#22732
40K
24.85 mi15:27:544:03:439:488:57
10:28
#22681
25.2M
25.20 mi15:32:224:08:119:514:28
12:57
#22737
Finish
26.22 mi15:42:194:18:089:519:57
9:46
#22730
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi223838848884821161(Top 75%)8093(Top 66%)8093(Top 148%)
10K6.21 mi3.10 mi22171+2128710+1388710+13821908(Top 77%)8548(Top 70%)8548(Top 156%)
15K9.32 mi3.11 mi21832+3398509+2018509+20121161(Top 75%)8093(Top 66%)8093(Top 148%)
20K12.43 mi3.11 mi21634+1988402+1078402+10721108(Top 74%)8122(Top 66%)8122(Top 149%)
Half13.11 mi0.68 mi21638-48401+18401+122026(Top 78%)8631(Top 71%)8631(Top 158%)
25K15.53 mi2.42 mi22041-4038626-2258626-22523355(Top 82%)9395(Top 77%)9395(Top 172%)
30K18.64 mi3.11 mi22485-4448905-2798905-27923700(Top 83%)9705(Top 79%)9705(Top 177%)
20M20.00 mi1.36 mi22491-68928-238928-2322730(Top 80%)9270(Top 76%)9270(Top 170%)
21M21.00 mi1.00 mi22734-2439079-1519079-15125180(Top 89%)10651(Top 87%)10651(Top 195%)
35K21.75 mi0.75 mi22806-729138-599138-5924424(Top 86%)10289(Top 84%)10289(Top 188%)
23M23.00 mi1.25 mi22742+649120+189120+1821892(Top 77%)9012(Top 74%)9012(Top 165%)
24M24.00 mi1.00 mi22732+109138-189138-1823250(Top 82%)9761(Top 80%)9761(Top 178%)
40K24.85 mi0.85 mi22681+519126+129126+1221851(Top 77%)9124(Top 75%)9124(Top 167%)
25.2M25.20 mi0.35 mi22737-569166-409166-4024984(Top 88%)10670(Top 87%)10670(Top 195%)
Finish26.22 mi1.02 mi22730+79181-159181-1522158(Top 78%)9245(Top 76%)9245(Top 169%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 75%
×21story building
+97ft-345ft

Overall

21161

Females

8093

F18-39

8093

5K→10K

3.1 - 6.2 mi

Top 77%
×5story building
+79ft-138ft

Overall

21908

Females

8548

F18-39

8548

10K→15K

6.2 - 9.3 mi

Top 75%
×3story building
+67ft-78ft

Overall

21161

Females

8093

F18-39

8093

15K→20K

9.3 - 12.4 mi

Top 74%
×5story building
+106ft-86ft

Overall

21108

Females

8122

F18-39

8122

20K→Half

12.4 - 13.1 mi

Top 78%
×2story building
+19ft-37ft

Overall

22026

Females

8631

F18-39

8631

Half→25K

13.1 - 15.5 mi

Top 82%
×4story building
+66ft-88ft

Overall

23355

Females

9395

F18-39

9395

25K→30K

15.5 - 18.6 mi

Top 83%
×9story building
+181ft-148ft

Overall

23700

Females

9705

F18-39

9705

30K→20M

18.6 - 20.0 mi

Top 80%
×5story building
+64ft-50ft

Overall

22730

Females

9270

F18-39

9270

20M→21M

20.0 - 21.0 mi

Top 89%
×8story building
+106ft-24ft

Overall

25180

Females

10651

F18-39

10651

21M→35K

21.0 - 21.8 mi

Top 86%
×7story building
+17ft-86ft

Overall

24424

Females

10289

F18-39

10289

35K→23M

21.8 - 23.0 mi

Top 77%
×5story building
+23ft-63ft

Overall

21892

Females

9012

F18-39

9012

23M→24M

23.0 - 24.0 mi

Top 82%
×6story building
+12ft-82ft

Overall

23250

Females

9761

F18-39

9761

24M→40K

24.0 - 24.9 mi

Top 77%
×1story
+6ft-20ft

Overall

21851

Females

9124

F18-39

9124

40K→25.2M

24.9 - 25.2 mi

Top 88%
×1story
+13ft-16ft

Overall

24984

Females

10670

F18-39

10670

25.2M→Finish

25.2 - 26.2 mi

Top 78%
×2story building
+22ft-21ft

Overall

22158

Females

9245

F18-39

9245

Passing Analysis

Category:
Athletes Passed
1655
Passed By
2002
Net Change
-347
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22383
5K → 10K383171+212#22383#22171
10K → 15K39051+339#22171#21832
15K → 20K304106+198#21832#21634
20K → Half2529-4#21634#21638
Half → 25K56459-403#21638#22041
25K → 30K81525-444#22041#22485
30K → 20M7581-6#22485#22491
20M → 21M26269-243#22491#22734
21M → 35K29101-72#22734#22806
35K → 23M10339+64#22806#22742
23M → 24M5747+10#22742#22732
24M → 40K7120+51#22732#22681
40K → 25.2M965-56#22681#22737
25.2M → Finish4639+7#22737#22730
TOTALS16552002-347
📊

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