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BOSTON MARATHON 2023

Mollie O'Leary

Bib: 12069•F

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 35%
Gender (Female)
#0 / 11423
Top 16%
Division (F18-39)
#0 / 4884
Top 29%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ 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
7:37/mi
23:40
↑ 97↓ 3451.5%
10K· 6.21 mi
7:32/mi
47:03
↑ 79↓ 1380.4%
15K· 9.32 mi
7:30/mi
1:10:21
↑ 67↓ 78
20K· 12.43 mi
7:34/mi
1:33:50
↑ 106↓ 860.1%
Half· 13.11 mi
7:23/mi
1:38:52
↑ 19↓ 370.5%
25K· 15.53 mi
7:35/mi
1:57:16
↑ 66↓ 880.2%
30K· 18.64 mi
7:31/mi
2:20:38
↑ 181↓ 1480.2%
20M
7:43/mi
2:31:07
↑ 64↓ 500.2%
21M
8:02/mi
2:39:09
↑ 106↓ 241.6%
35K· 21.75 mi
7:20/mi
2:44:38
↑ 17↓ 861.7%
23M
7:55/mi
2:54:33
↑ 23↓ 630.6%
24M
7:51/mi
3:02:24
↓ 821.3%
40K· 24.85 mi
8:07/mi
3:09:20
↓ 200.3%
25.2M
9:11/mi
3:12:30
↑ 13↓ 160.2%
Finish· 26.22 mi
8:10/mi
3:20:49
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:52
Pace7:32 /mi
2nd Half
Distance13.11 mi
Time1:41:57
Pace7:47 /mi
📊Positive Split: 3.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:1023:407:3723:40
7:37
-
10K
6.21 mi11:14:3347:037:3423:23
7:32
-0:05
15K
9.32 mi11:37:511:10:217:3323:18
7:30
-0:02
20K
12.43 mi12:01:201:33:507:3323:29
7:34
+0:04
Half
13.11 mi12:06:221:38:527:325:02
7:23
-0:11
25K
15.53 mi12:24:461:57:167:3318:24
7:35
+0:12
30K
18.64 mi12:48:082:20:387:3323:22
7:31
-0:04
20M
20.00 mi12:58:372:31:077:3310:29
7:43
+0:12
21M
21.00 mi13:06:392:39:097:358:02
8:02
+0:19
35K
21.75 mi13:12:082:44:387:345:29
7:20
-0:42
23M
23.00 mi13:22:032:54:337:359:55
7:55
+0:35
24M
24.00 mi13:29:543:02:247:367:51
7:51
-0:04
40K
24.85 mi13:36:503:09:207:376:56
8:07
+0:16
25.2M
25.20 mi13:40:003:12:307:383:10
9:11
+1:04
Finish
26.22 mi13:48:193:20:497:408:19
8:10
-1:01

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

7:20 /mi

Average Pace

7:40 /mi

Slowest Pace

9:11 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

10:31

5% of race

Time at Steady Pace

2:26:05

73% of race

Time at Slower Pace

44:13

22% of race

Average Pace: 7:40 /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 mi10:51:1023:407:3723:40
7:37
#10702
10K
6.21 mi11:14:3347:037:3423:23
7:32
#10661
15K
9.32 mi11:37:511:10:217:3323:18
7:30
#10486
20K
12.43 mi12:01:201:33:507:3323:29
7:34
#10278
Half
13.11 mi12:06:221:38:527:325:02
7:23
#10217
25K
15.53 mi12:24:461:57:167:3318:24
7:35
#10037
30K
18.64 mi12:48:082:20:387:3323:22
7:31
#9535
20M
20.00 mi12:58:372:31:077:3310:29
7:43
#9410
21M
21.00 mi13:06:392:39:097:358:02
8:02
#9260
35K
21.75 mi13:12:082:44:387:345:29
7:20
#9165
23M
23.00 mi13:22:032:54:337:359:55
7:55
#9152
24M
24.00 mi13:29:543:02:247:367:51
7:51
#9161
40K
24.85 mi13:36:503:09:207:376:56
8:07
#9189
25.2M
25.20 mi13:40:003:12:307:383:10
9:11
#9269
Finish
26.22 mi13:48:193:20:497:408:19
8:10
#9405
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi107022181218110183(Top 38%)1927(Top 17%)1927(Top 39%)
10K6.21 mi3.10 mi10661+412150+312150+3110677(Top 40%)2141(Top 19%)2141(Top 44%)
15K9.32 mi3.11 mi10486+1752056+942056+9410183(Top 38%)1927(Top 17%)1927(Top 39%)
20K12.43 mi3.11 mi10278+2081964+921964+929777(Top 37%)1818(Top 16%)1818(Top 37%)
Half13.11 mi0.68 mi10217+611937+271937+279320(Top 35%)1612(Top 14%)1612(Top 33%)
25K15.53 mi2.42 mi10037+1801878+591878+599474(Top 36%)1765(Top 15%)1765(Top 36%)
30K18.64 mi3.11 mi9535+5021697+1811697+1817378(Top 28%)1064(Top 9%)1064(Top 22%)
20M20.00 mi1.36 mi9410+1251674+231674+238323(Top 31%)1527(Top 13%)1527(Top 31%)
21M21.00 mi1.00 mi9260+1501639+351639+357592(Top 29%)1358(Top 12%)1358(Top 28%)
35K21.75 mi0.75 mi9165+951614+251614+257388(Top 28%)1263(Top 11%)1263(Top 26%)
23M23.00 mi1.25 mi9152+131638-241638-249227(Top 35%)2130(Top 19%)2130(Top 44%)
24M24.00 mi1.00 mi9161-91659-211659-2110169(Top 38%)2662(Top 23%)2662(Top 55%)
40K24.85 mi0.85 mi9189-281699-401699-4010772(Top 40%)3020(Top 26%)3020(Top 62%)
25.2M25.20 mi0.35 mi9269-801745-461745-4613556(Top 51%)4493(Top 39%)4493(Top 92%)
Finish26.22 mi1.02 mi9405-1361820-751820-7513181(Top 50%)4290(Top 38%)4290(Top 88%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 38%
×21story building
+97ft-345ft

Overall

10183

Females

1927

F18-39

1927

5K→10K

3.1 - 6.2 mi

Top 40%
×5story building
+79ft-138ft

Overall

10677

Females

2141

F18-39

2141

10K→15K

6.2 - 9.3 mi

Top 38%
×3story building
+67ft-78ft

Overall

10183

Females

1927

F18-39

1927

15K→20K

9.3 - 12.4 mi

Top 37%
×5story building
+106ft-86ft

Overall

9777

Females

1818

F18-39

1818

20K→Half

12.4 - 13.1 mi

Top 35%
×2story building
+19ft-37ft

Overall

9320

Females

1612

F18-39

1612

Half→25K

13.1 - 15.5 mi

Top 36%
×4story building
+66ft-88ft

Overall

9474

Females

1765

F18-39

1765

25K→30K

15.5 - 18.6 mi

Top 28%
×9story building
+181ft-148ft

Overall

7378

Females

1064

F18-39

1064

30K→20M

18.6 - 20.0 mi

Top 31%
×5story building
+64ft-50ft

Overall

8323

Females

1527

F18-39

1527

20M→21M

20.0 - 21.0 mi

Top 29%
×8story building
+106ft-24ft

Overall

7592

Females

1358

F18-39

1358

21M→35K

21.0 - 21.8 mi

Top 28%
×7story building
+17ft-86ft

Overall

7388

Females

1263

F18-39

1263

35K→23M

21.8 - 23.0 mi

Top 35%
×5story building
+23ft-63ft

Overall

9227

Females

2130

F18-39

2130

23M→24M

23.0 - 24.0 mi

Top 38%
×6story building
+12ft-82ft

Overall

10169

Females

2662

F18-39

2662

24M→40K

24.0 - 24.9 mi

Top 40%
×1story
+6ft-20ft

Overall

10772

Females

3020

F18-39

3020

40K→25.2M

24.9 - 25.2 mi

Top 51%
×1story
+13ft-16ft

Overall

13556

Females

4493

F18-39

4493

25.2M→Finish

25.2 - 26.2 mi

Top 50%
×2story building
+22ft-21ft

Overall

13181

Females

4290

F18-39

4290

Passing Analysis

Category:
Athletes Passed
2313*
Passed By
1016
Net Change
+1297
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10702
5K → 10K315274+41#10702#10661
10K → 15K294119+175#10661#10486
15K → 20K261*53+208#10486#10278
20K → Half709+61#10278#10217
Half → 25K22242+180#10217#10037
25K → 30K509*7+502#10037#9535
30K → 20M14823+125#9535#9410
20M → 21M16919+150#9410#9260
21M → 35K994+95#9260#9165
35K → 23M8976+13#9165#9152
23M → 24M5766-9#9152#9161
24M → 40K5583-28#9161#9189
40K → 25.2M585-80#9189#9269
25.2M → Finish20156-136#9269#9405
TOTALS2313*1016+1297

* 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