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BOSTON MARATHON 2023

Megan Griffiths

Bib: 17729•F

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
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
8:09/mi
25:20
↑ 97↓ 3451.5%
10K· 6.21 mi
8:01/mi
50:13
↑ 79↓ 1380.4%
15K· 9.32 mi
8:36/mi
1:16:57
↑ 67↓ 78
20K· 12.43 mi
8:36/mi
1:43:39
↑ 106↓ 860.1%
Half· 13.11 mi
8:34/mi
1:49:30
↑ 19↓ 370.5%
25K· 15.53 mi
8:46/mi
2:10:45
↑ 66↓ 880.2%
30K· 18.64 mi
9:13/mi
2:39:22
↑ 181↓ 1480.2%
20M
9:16/mi
2:51:58
↑ 64↓ 500.2%
21M
10:05/mi
3:02:03
↑ 106↓ 241.6%
35K· 21.75 mi
9:20/mi
3:09:02
↑ 17↓ 861.7%
23M
9:53/mi
3:21:25
↑ 23↓ 630.6%
24M
9:58/mi
3:31:23
↓ 821.3%
40K· 24.85 mi
9:47/mi
3:39:45
↓ 200.3%
25.2M
11:24/mi
3:43:41
↑ 13↓ 160.2%
Finish· 26.22 mi
9:05/mi
3:52:56
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:49:30
Pace8:21 /mi
2nd Half
Distance13.11 mi
Time2:03:26
Pace9:25 /mi
📊Positive Split: 12.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:2225:208:0925:20
8:09
-
10K
6.21 mi11:42:1550:138:0524:53
8:01
-0:08
15K
9.32 mi12:08:591:16:578:1526:44
8:36
+0:35
20K
12.43 mi12:35:411:43:398:2026:42
8:36
0:00
Half
13.11 mi12:41:321:49:308:215:51
8:34
-0:02
25K
15.53 mi13:02:472:10:458:2521:15
8:46
+0:12
30K
18.64 mi13:31:242:39:228:3328:37
9:13
+0:27
20M
20.00 mi13:44:002:51:588:3612:36
9:16
+0:03
21M
21.00 mi13:54:053:02:038:4010:05
10:05
+0:49
35K
21.75 mi14:01:043:09:028:426:59
9:20
-0:45
23M
23.00 mi14:13:273:21:258:4512:23
9:53
+0:33
24M
24.00 mi14:23:253:31:238:489:58
9:58
+0:05
40K
24.85 mi14:31:473:39:458:508:22
9:47
-0:11
25.2M
25.20 mi14:35:433:43:418:533:56
11:24
+1:37
Finish
26.22 mi14:44:583:52:568:539:15
9:05
-2:19

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

8:01 /mi

Average Pace

8:53 /mi

Slowest Pace

11:24 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:10:45

56% of race

Time at Steady Pace

57:27

25% of race

Time at Slower Pace

44:44

19% of race

Average Pace: 8:53 /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 mi11:17:2225:208:0925:20
8:09
#15125
10K
6.21 mi11:42:1550:138:0524:53
8:01
#14990
15K
9.32 mi12:08:591:16:578:1526:44
8:36
#16221
20K
12.43 mi12:35:411:43:398:2026:42
8:36
#16554
Half
13.11 mi12:41:321:49:308:215:51
8:34
#16658
25K
15.53 mi13:02:472:10:458:2521:15
8:46
#16841
30K
18.64 mi13:31:242:39:228:3328:37
9:13
#17051
20M
20.00 mi13:44:002:51:588:3612:36
9:16
#17129
21M
21.00 mi13:54:053:02:038:4010:05
10:05
#17202
35K
21.75 mi14:01:043:09:028:426:59
9:20
#17288
23M
23.00 mi14:13:273:21:258:4512:23
9:53
#17503
24M
24.00 mi14:23:253:31:238:489:58
9:58
#17751
40K
24.85 mi14:31:473:39:458:508:22
9:47
#17851
25.2M
25.20 mi14:35:433:43:418:533:56
11:24
#17946
Finish
26.22 mi14:44:583:52:568:539:15
9:05
#17965
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi151254729472918488(Top 69%)6791(Top 59%)6791(Top 139%)
10K6.21 mi3.10 mi14990+1354647+824647+8214892(Top 56%)4609(Top 40%)4609(Top 94%)
15K9.32 mi3.11 mi16221-12315423-7765423-77618488(Top 69%)6791(Top 59%)6791(Top 139%)
20K12.43 mi3.11 mi16554-3335649-2265649-22617461(Top 66%)6202(Top 54%)6202(Top 127%)
Half13.11 mi0.68 mi16658-1045719-705719-7018224(Top 68%)6619(Top 58%)6619(Top 136%)
25K15.53 mi2.42 mi16841-1835858-1395858-13917764(Top 67%)6438(Top 56%)6438(Top 132%)
30K18.64 mi3.11 mi17051-2105995-1375995-13718222(Top 68%)6776(Top 59%)6776(Top 139%)
20M20.00 mi1.36 mi17129-786054-596054-5917901(Top 67%)6692(Top 59%)6692(Top 137%)
21M21.00 mi1.00 mi17202-736115-616115-6118331(Top 69%)6950(Top 61%)6950(Top 142%)
35K21.75 mi0.75 mi17288-866175-606175-6019297(Top 72%)7538(Top 66%)7538(Top 154%)
23M23.00 mi1.25 mi17503-2156324-1496324-14919671(Top 74%)7778(Top 68%)7778(Top 159%)
24M24.00 mi1.00 mi17751-2486481-1576481-15720706(Top 78%)8386(Top 73%)8386(Top 172%)
40K24.85 mi0.85 mi17851-1006540-596540-5919358(Top 73%)7685(Top 67%)7685(Top 157%)
25.2M25.20 mi0.35 mi17946-956607-676607-6721357(Top 80%)8776(Top 77%)8776(Top 180%)
Finish26.22 mi1.02 mi17965-196637-306637-3018383(Top 69%)7104(Top 62%)7104(Top 145%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 69%
×21story building
+97ft-345ft

Overall

18488

Females

6791

F18-39

6791

5K→10K

3.1 - 6.2 mi

Top 56%
×5story building
+79ft-138ft

Overall

14892

Females

4609

F18-39

4609

10K→15K

6.2 - 9.3 mi

Top 69%
×3story building
+67ft-78ft

Overall

18488

Females

6791

F18-39

6791

15K→20K

9.3 - 12.4 mi

Top 66%
×5story building
+106ft-86ft

Overall

17461

Females

6202

F18-39

6202

20K→Half

12.4 - 13.1 mi

Top 68%
×2story building
+19ft-37ft

Overall

18224

Females

6619

F18-39

6619

Half→25K

13.1 - 15.5 mi

Top 67%
×4story building
+66ft-88ft

Overall

17764

Females

6438

F18-39

6438

25K→30K

15.5 - 18.6 mi

Top 68%
×9story building
+181ft-148ft

Overall

18222

Females

6776

F18-39

6776

30K→20M

18.6 - 20.0 mi

Top 67%
×5story building
+64ft-50ft

Overall

17901

Females

6692

F18-39

6692

20M→21M

20.0 - 21.0 mi

Top 69%
×8story building
+106ft-24ft

Overall

18331

Females

6950

F18-39

6950

21M→35K

21.0 - 21.8 mi

Top 72%
×7story building
+17ft-86ft

Overall

19297

Females

7538

F18-39

7538

35K→23M

21.8 - 23.0 mi

Top 74%
×5story building
+23ft-63ft

Overall

19671

Females

7778

F18-39

7778

23M→24M

23.0 - 24.0 mi

Top 78%
×6story building
+12ft-82ft

Overall

20706

Females

8386

F18-39

8386

24M→40K

24.0 - 24.9 mi

Top 73%
×1story
+6ft-20ft

Overall

19358

Females

7685

F18-39

7685

40K→25.2M

24.9 - 25.2 mi

Top 80%
×1story
+13ft-16ft

Overall

21357

Females

8776

F18-39

8776

25.2M→Finish

25.2 - 26.2 mi

Top 69%
×2story building
+22ft-21ft

Overall

18383

Females

7104

F18-39

7104

Passing Analysis

Category:
Athletes Passed
943
Passed By
3783
Net Change
-2840
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15125
5K → 10K362227+135#15125#14990
10K → 15K171248-1231#14990#16221
15K → 20K78411-333#16221#16554
20K → Half14118-104#16554#16658
Half → 25K82265-183#16658#16841
25K → 30K108318-210#16841#17051
30K → 20M55133-78#17051#17129
20M → 21M65138-73#17129#17202
21M → 35K25111-86#17202#17288
35K → 23M41256-215#17288#17503
23M → 24M17265-248#17503#17751
24M → 40K25125-100#17751#17851
40K → 25.2M5100-95#17851#17946
25.2M → Finish4968-19#17946#17965
TOTALS9433783-2840
📊

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