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BOSTON MARATHON 2023

Mackenzie O'toole

Bib: 8391•F

CA

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 35%
Division (F18-39)
#0 / 4884
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
8:24/mi
26:07
↑ 97↓ 3451.5%
10K· 6.21 mi
8:22/mi
52:06
↑ 79↓ 1380.4%
15K· 9.32 mi
8:11/mi
1:17:31
↑ 67↓ 78
20K· 12.43 mi
8:12/mi
1:43:01
↑ 106↓ 860.1%
Half· 13.11 mi
7:58/mi
1:48:27
↑ 19↓ 370.5%
25K· 15.53 mi
8:04/mi
2:08:01
↑ 66↓ 880.2%
30K· 18.64 mi
8:15/mi
2:33:38
↑ 181↓ 1480.2%
20M
8:15/mi
2:44:51
↑ 64↓ 500.2%
21M
8:39/mi
2:53:30
↑ 106↓ 241.6%
35K· 21.75 mi
7:51/mi
2:59:22
↑ 17↓ 861.7%
23M
8:02/mi
3:09:25
↑ 23↓ 630.6%
24M
7:48/mi
3:17:13
↓ 821.3%
40K· 24.85 mi
7:55/mi
3:23:59
↓ 200.3%
25.2M
8:42/mi
3:26:59
↑ 13↓ 160.2%
Finish· 26.22 mi
7:42/mi
3:34:50
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:48:27
Pace8:16 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:46:23
Pace8:07 /mi
📊Negative Split: 1.9% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:2426:078:2426:07
8:24
-
10K
6.21 mi11:43:2352:068:2325:59
8:22
-0:02
15K
9.32 mi12:08:481:17:318:1925:25
8:11
-0:11
20K
12.43 mi12:34:181:43:018:1725:30
8:12
+0:01
Half
13.11 mi12:39:441:48:278:165:26
7:58
-0:14
25K
15.53 mi12:59:182:08:018:1419:34
8:04
+0:06
30K
18.64 mi13:24:552:33:388:1425:37
8:15
+0:11
20M
20.00 mi13:36:082:44:518:1511:13
8:15
0:00
21M
21.00 mi13:44:472:53:308:168:39
8:39
+0:24
35K
21.75 mi13:50:392:59:228:155:52
7:51
-0:48
23M
23.00 mi14:00:423:09:258:1410:03
8:02
+0:11
24M
24.00 mi14:08:303:17:138:137:48
7:48
-0:14
40K
24.85 mi14:15:163:23:598:126:46
7:55
+0:07
25.2M
25.20 mi14:18:163:26:598:133:00
8:42
+0:47
Finish
26.22 mi14:26:073:34:508:127:51
7:42
-1:00

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

7:42 /mi

Average Pace

8:12 /mi

Slowest Pace

8:42 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:23:11

95% of race

Time at Steady Pace

11:39

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:12 /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 mi11:17:2426:078:2426:07
8:24
#16923
10K
6.21 mi11:43:2352:068:2325:59
8:22
#17102
15K
9.32 mi12:08:481:17:318:1925:25
8:11
#16631
20K
12.43 mi12:34:181:43:018:1725:30
8:12
#16183
Half
13.11 mi12:39:441:48:278:165:26
7:58
#16073
25K
15.53 mi12:59:182:08:018:1419:34
8:04
#15625
30K
18.64 mi13:24:552:33:388:1425:37
8:15
#15080
20M
20.00 mi13:36:082:44:518:1511:13
8:15
#14853
21M
21.00 mi13:44:472:53:308:168:39
8:39
#14636
35K
21.75 mi13:50:392:59:228:155:52
7:51
#14507
23M
23.00 mi14:00:423:09:258:1410:03
8:02
#14214
24M
24.00 mi14:08:303:17:138:137:48
7:48
#14002
40K
24.85 mi14:15:163:23:598:126:46
7:55
#13818
25.2M
25.20 mi14:18:163:26:598:133:00
8:42
#13760
Finish
26.22 mi14:26:073:34:508:127:51
7:42
#13583
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi169235873587315719(Top 59%)5118(Top 45%)5118(Top 105%)
10K6.21 mi3.10 mi17102-1795985-1125985-11217328(Top 65%)6076(Top 53%)6076(Top 124%)
15K9.32 mi3.11 mi16631+4715679+3065679+30615719(Top 59%)5118(Top 45%)5118(Top 105%)
20K12.43 mi3.11 mi16183+4485410+2695410+26915011(Top 56%)4720(Top 41%)4720(Top 97%)
Half13.11 mi0.68 mi16073+1105354+565354+5614116(Top 53%)4147(Top 36%)4147(Top 85%)
25K15.53 mi2.42 mi15625+4485104+2505104+25013317(Top 50%)3815(Top 33%)3815(Top 78%)
30K18.64 mi3.11 mi15080+5454808+2964808+29612664(Top 48%)3568(Top 31%)3568(Top 73%)
20M20.00 mi1.36 mi14853+2274672+1364672+13612084(Top 45%)3332(Top 29%)3332(Top 68%)
21M21.00 mi1.00 mi14636+2174570+1024570+10211394(Top 43%)3092(Top 27%)3092(Top 63%)
35K21.75 mi0.75 mi14507+1294508+624508+6211026(Top 41%)2903(Top 25%)2903(Top 59%)
23M23.00 mi1.25 mi14214+2934356+1524356+1529985(Top 38%)2517(Top 22%)2517(Top 52%)
24M24.00 mi1.00 mi14002+2124252+1044252+1049852(Top 37%)2537(Top 22%)2537(Top 52%)
40K24.85 mi0.85 mi13818+1844160+924160+929517(Top 36%)2432(Top 21%)2432(Top 50%)
25.2M25.20 mi0.35 mi13760+584129+314129+3110846(Top 41%)3120(Top 27%)3120(Top 64%)
Finish26.22 mi1.02 mi13583+1774035+944035+9410038(Top 38%)2725(Top 24%)2725(Top 56%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 59%
×21story building
+97ft-345ft

Overall

15719

Females

5118

F18-39

5118

5K→10K

3.1 - 6.2 mi

Top 65%
×5story building
+79ft-138ft

Overall

17328

Females

6076

F18-39

6076

10K→15K

6.2 - 9.3 mi

Top 59%
×3story building
+67ft-78ft

Overall

15719

Females

5118

F18-39

5118

15K→20K

9.3 - 12.4 mi

Top 56%
×5story building
+106ft-86ft

Overall

15011

Females

4720

F18-39

4720

20K→Half

12.4 - 13.1 mi

Top 53%
×2story building
+19ft-37ft

Overall

14116

Females

4147

F18-39

4147

Half→25K

13.1 - 15.5 mi

Top 50%
×4story building
+66ft-88ft

Overall

13317

Females

3815

F18-39

3815

25K→30K

15.5 - 18.6 mi

Top 48%
×9story building
+181ft-148ft

Overall

12664

Females

3568

F18-39

3568

30K→20M

18.6 - 20.0 mi

Top 45%
×5story building
+64ft-50ft

Overall

12084

Females

3332

F18-39

3332

20M→21M

20.0 - 21.0 mi

Top 43%
×8story building
+106ft-24ft

Overall

11394

Females

3092

F18-39

3092

21M→35K

21.0 - 21.8 mi

Top 41%
×7story building
+17ft-86ft

Overall

11026

Females

2903

F18-39

2903

35K→23M

21.8 - 23.0 mi

Top 38%
×5story building
+23ft-63ft

Overall

9985

Females

2517

F18-39

2517

23M→24M

23.0 - 24.0 mi

Top 37%
×6story building
+12ft-82ft

Overall

9852

Females

2537

F18-39

2537

24M→40K

24.0 - 24.9 mi

Top 36%
×1story
+6ft-20ft

Overall

9517

Females

2432

F18-39

2432

40K→25.2M

24.9 - 25.2 mi

Top 41%
×1story
+13ft-16ft

Overall

10846

Females

3120

F18-39

3120

25.2M→Finish

25.2 - 26.2 mi

Top 38%
×2story building
+22ft-21ft

Overall

10038

Females

2725

F18-39

2725

Passing Analysis

Category:
Athletes Passed
3873
Passed By
533
Net Change
+3340
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16923
5K → 10K228407-179#16923#17102
10K → 15K52655+471#17102#16631
15K → 20K46719+448#16631#16183
20K → Half1155+110#16183#16073
Half → 25K4546+448#16073#15625
25K → 30K5505+545#15625#15080
30K → 20M2314+227#15080#14853
20M → 21M22710+217#14853#14636
21M → 35K1301+129#14636#14507
35K → 23M2930+293#14507#14214
23M → 24M2142+212#14214#14002
24M → 40K1895+184#14002#13818
40K → 25.2M646+58#13818#13760
25.2M → Finish1858+177#13760#13583
TOTALS3873533+3340
📊

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