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BOSTON MARATHON 2025

Mollie O'Leary

Bib: 15662•F

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 29%
Gender (Female)
#0 / 12228
Top 11%
Division (F18-39)
#0 / 5469
Top 21%
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
7:20/mi
22:46
↑ 97↓ 3451.5%
10K· 6.21 mi
7:24/mi
45:45
↑ 79↓ 1380.4%
15K· 9.32 mi
7:25/mi
1:08:47
↑ 67↓ 78
20K· 12.43 mi
7:25/mi
1:31:49
↑ 106↓ 860.1%
Half· 13.11 mi
7:17/mi
1:36:47
↑ 19↓ 370.5%
25K· 15.53 mi
7:17/mi
1:54:26
↑ 66↓ 880.2%
30K· 18.64 mi
7:29/mi
2:17:41
↑ 181↓ 1480.2%
20M
7:34/mi
2:27:58
↑ 64↓ 500.2%
21M
7:37/mi
2:35:35
↑ 106↓ 241.6%
35K· 21.75 mi
7:08/mi
2:40:55
↑ 17↓ 861.7%
23M
7:32/mi
2:50:21
↑ 23↓ 630.6%
24M
7:26/mi
2:57:47
↓ 821.3%
40K· 24.85 mi
7:30/mi
3:04:12
↓ 200.3%
25.2M
7:50/mi
3:06:54
↑ 13↓ 160.2%
Finish· 26.22 mi
6:34/mi
3:13:36
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:36:47
Pace7:23 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:36:49
Pace7:23 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:54:1322:467:2022:46
7:20
-
10K
6.21 mi11:17:1245:457:2222:59
7:24
+0:04
15K
9.32 mi11:40:141:08:477:2323:02
7:25
+0:01
20K
12.43 mi12:03:161:31:497:2323:02
7:25
0:00
Half
13.11 mi12:08:141:36:477:234:58
7:17
-0:08
25K
15.53 mi12:25:531:54:267:2217:39
7:17
0:00
30K
18.64 mi12:49:082:17:417:2323:15
7:29
+0:12
20M
20.00 mi12:59:252:27:587:2410:17
7:34
+0:05
21M
21.00 mi13:07:022:35:357:257:37
7:37
+0:03
35K
21.75 mi13:12:222:40:557:245:20
7:08
-0:29
23M
23.00 mi13:21:482:50:217:249:26
7:32
+0:24
24M
24.00 mi13:29:142:57:477:247:26
7:26
-0:06
40K
24.85 mi13:35:393:04:127:256:25
7:30
+0:04
25.2M
25.20 mi13:38:213:06:547:252:42
7:50
+0:20
Finish
26.22 mi13:45:033:13:367:236:42
6:34
-1:16

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

6:34 /mi

Average Pace

7:23 /mi

Slowest Pace

7:50 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

12:02

6% of race

Time at Steady Pace

2:58:52

92% of race

Time at Slower Pace

2:42

1% of race

Average Pace: 7:23 /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 mi10:54:1322:467:2022:46
7:20
#10649
10K
6.21 mi11:17:1245:457:2222:59
7:24
#10896
15K
9.32 mi11:40:141:08:477:2323:02
7:25
#10882
20K
12.43 mi12:03:161:31:497:2323:02
7:25
#10647
Half
13.11 mi12:08:141:36:477:234:58
7:17
#10596
25K
15.53 mi12:25:531:54:267:2217:39
7:17
#10152
30K
18.64 mi12:49:082:17:417:2323:15
7:29
#9587
20M
20.00 mi12:59:252:27:587:2410:17
7:34
#9363
21M
21.00 mi13:07:022:35:357:257:37
7:37
#9057
35K
21.75 mi13:12:222:40:557:245:20
7:08
#8899
23M
23.00 mi13:21:482:50:217:249:26
7:32
#8703
24M
24.00 mi13:29:142:57:477:247:26
7:26
#8591
40K
24.85 mi13:35:393:04:127:256:25
7:30
#8464
25.2M
25.20 mi13:38:213:06:547:252:42
7:50
#8369
Finish
26.22 mi13:45:033:13:367:236:42
6:34
#8101
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi106492106210611000(Top 39%)2369(Top 19%)2369(Top 43%)
10K6.21 mi3.10 mi10896-2472254-1482254-14811161(Top 39%)2394(Top 20%)2394(Top 44%)
15K9.32 mi3.11 mi10882+142259-52259-511000(Top 39%)2369(Top 19%)2369(Top 43%)
20K12.43 mi3.11 mi10647+2352173+862173+8610020(Top 35%)1965(Top 16%)1965(Top 36%)
Half13.11 mi0.68 mi10596+512144+292144+299846(Top 35%)1862(Top 15%)1862(Top 34%)
25K15.53 mi2.42 mi10152+4441980+1641980+1648227(Top 29%)1307(Top 11%)1307(Top 24%)
30K18.64 mi3.11 mi9587+5651772+2081772+2087649(Top 27%)1252(Top 10%)1252(Top 23%)
20M20.00 mi1.36 mi9363+2241701+711701+717478(Top 26%)1335(Top 11%)1335(Top 24%)
21M21.00 mi1.00 mi9057+3061595+1061595+1065251(Top 18%)683(Top 6%)683(Top 12%)
35K21.75 mi0.75 mi8899+1581551+441551+446209(Top 22%)999(Top 8%)999(Top 18%)
23M23.00 mi1.25 mi8703+1961513+381513+386847(Top 24%)1330(Top 11%)1330(Top 24%)
24M24.00 mi1.00 mi8591+1121499+141499+147278(Top 26%)1567(Top 13%)1567(Top 29%)
40K24.85 mi0.85 mi8464+1271486+131486+136853(Top 24%)1493(Top 12%)1493(Top 27%)
25.2M25.20 mi0.35 mi8369+951466+201466+205128(Top 18%)926(Top 8%)926(Top 17%)
Finish26.22 mi1.02 mi8101+2681395+711395+713244(Top 11%)377(Top 3%)377(Top 7%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 39%
×21story building
+97ft-345ft

Overall

11000

Females

2369

F18-39

2369

5K→10K

3.1 - 6.2 mi

Top 39%
×5story building
+79ft-138ft

Overall

11161

Females

2394

F18-39

2394

10K→15K

6.2 - 9.3 mi

Top 39%
×3story building
+67ft-78ft

Overall

11000

Females

2369

F18-39

2369

15K→20K

9.3 - 12.4 mi

Top 35%
×5story building
+106ft-86ft

Overall

10020

Females

1965

F18-39

1965

20K→Half

12.4 - 13.1 mi

Top 35%
×2story building
+19ft-37ft

Overall

9846

Females

1862

F18-39

1862

Half→25K

13.1 - 15.5 mi

Top 29%
×4story building
+66ft-88ft

Overall

8227

Females

1307

F18-39

1307

25K→30K

15.5 - 18.6 mi

Top 27%
×9story building
+181ft-148ft

Overall

7649

Females

1252

F18-39

1252

30K→20M

18.6 - 20.0 mi

Top 26%
×5story building
+64ft-50ft

Overall

7478

Females

1335

F18-39

1335

20M→21M

20.0 - 21.0 mi

Top 18%
×8story building
+106ft-24ft

Overall

5251

Females

683

F18-39

683

21M→35K

21.0 - 21.8 mi

Top 22%
×7story building
+17ft-86ft

Overall

6209

Females

999

F18-39

999

35K→23M

21.8 - 23.0 mi

Top 24%
×5story building
+23ft-63ft

Overall

6847

Females

1330

F18-39

1330

23M→24M

23.0 - 24.0 mi

Top 26%
×6story building
+12ft-82ft

Overall

7278

Females

1567

F18-39

1567

24M→40K

24.0 - 24.9 mi

Top 24%
×1story
+6ft-20ft

Overall

6853

Females

1493

F18-39

1493

40K→25.2M

24.9 - 25.2 mi

Top 18%
×1story
+13ft-16ft

Overall

5128

Females

926

F18-39

926

25.2M→Finish

25.2 - 26.2 mi

Top 11%
×2story building
+22ft-21ft

Overall

3244

Females

377

F18-39

377

Passing Analysis

Category:
Athletes Passed
3297*
Passed By
749
Net Change
+2548
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10649
5K → 10K154401-247#10649#10896
10K → 15K180166+14#10896#10882
15K → 20K29156+235#10882#10647
20K → Half6817+51#10647#10596
Half → 25K4528+444#10596#10152
25K → 30K580*15+565#10152#9587
30K → 20M23713+224#9587#9363
20M → 21M3071+306#9363#9057
21M → 35K1635+158#9057#8899
35K → 23M22024+196#8899#8703
23M → 24M13523+112#8703#8591
24M → 40K14316+127#8591#8464
40K → 25.2M983+95#8464#8369
25.2M → Finish2691+268#8369#8101
TOTALS3297*749+2548

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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