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BOSTON MARATHON 2023

Mary Ann Nichols

Bib: 31831•F

NY

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
9:29/mi
29:28
↑ 97↓ 3451.5%
10K· 6.21 mi
9:30/mi
58:58
↑ 79↓ 1380.4%
15K· 9.32 mi
9:11/mi
1:27:29
↑ 67↓ 78
20K· 12.43 mi
9:12/mi
1:56:05
↑ 106↓ 860.1%
Half· 13.11 mi
9:05/mi
2:02:17
↑ 19↓ 370.5%
25K· 15.53 mi
9:20/mi
2:24:55
↑ 66↓ 880.2%
30K· 18.64 mi
9:32/mi
2:54:31
↑ 181↓ 1480.2%
20M
9:08/mi
3:06:56
↑ 64↓ 500.2%
21M
9:39/mi
3:16:35
↑ 106↓ 241.6%
35K· 21.75 mi
8:43/mi
3:23:06
↑ 17↓ 861.7%
23M
9:17/mi
3:34:43
↑ 23↓ 630.6%
24M
8:22/mi
3:43:05
↓ 821.3%
40K· 24.85 mi
8:33/mi
3:50:24
↓ 200.3%
25.2M
9:02/mi
3:53:31
↑ 13↓ 160.2%
Finish· 26.22 mi
8:15/mi
4:01:55
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time2:02:17
Pace9:20 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:59:38
Pace9:08 /mi
📊Negative Split: 2.2% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:49:2829:289:2929:28
9:29
-
10K
6.21 mi12:18:5858:589:2929:30
9:30
+0:01
15K
9.32 mi12:47:291:27:299:2328:31
9:11
-0:19
20K
12.43 mi13:16:051:56:059:2028:36
9:12
+0:01
Half
13.11 mi13:22:172:02:179:206:12
9:05
-0:07
25K
15.53 mi13:44:552:24:559:2022:38
9:20
+0:15
30K
18.64 mi14:14:312:54:319:2229:36
9:32
+0:12
20M
20.00 mi14:26:563:06:569:2112:25
9:08
-0:24
21M
21.00 mi14:36:353:16:359:229:39
9:39
+0:31
35K
21.75 mi14:43:063:23:069:206:31
8:43
-0:56
23M
23.00 mi14:54:433:34:439:2011:37
9:17
+0:34
24M
24.00 mi15:03:053:43:059:188:22
8:22
-0:55
40K
24.85 mi15:10:243:50:249:167:19
8:33
+0:11
25.2M
25.20 mi15:13:313:53:319:163:07
9:02
+0:29
Finish
26.22 mi15:21:554:01:559:148:24
8:15
-0:47

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

8:15 /mi

Average Pace

9:14 /mi

Slowest Pace

9:39 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

33:43

14% of race

Time at Steady Pace

3:28:12

86% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:14 /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 mi11:49:2829:289:2929:28
9:29
#22039
10K
6.21 mi12:18:5858:589:2929:30
9:30
#22304
15K
9.32 mi12:47:291:27:299:2328:31
9:11
#21951
20K
12.43 mi13:16:051:56:059:2028:36
9:12
#21647
Half
13.11 mi13:22:172:02:179:206:12
9:05
#21594
25K
15.53 mi13:44:552:24:559:2022:38
9:20
#21371
30K
18.64 mi14:14:312:54:319:2229:36
9:32
#21055
20M
20.00 mi14:26:563:06:569:2112:25
9:08
#20773
21M
21.00 mi14:36:353:16:359:229:39
9:39
#20545
35K
21.75 mi14:43:063:23:069:206:31
8:43
#20413
23M
23.00 mi14:54:433:34:439:2011:37
9:17
#20257
24M
24.00 mi15:03:053:43:059:188:22
8:22
#20060
40K
24.85 mi15:10:243:50:249:167:19
8:33
#19843
25.2M
25.20 mi15:13:313:53:319:163:07
9:02
#19769
Finish
26.22 mi15:21:554:01:559:148:24
8:15
#19598
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi220398897889721234(Top 80%)8360(Top 73%)8360(Top 171%)
10K6.21 mi3.10 mi22304-2659001-1049001-10422508(Top 85%)9088(Top 80%)9088(Top 186%)
15K9.32 mi3.11 mi21951+3538810+1918810+19121234(Top 80%)8360(Top 73%)8360(Top 171%)
20K12.43 mi3.11 mi21647+3048634+1768634+17620597(Top 77%)8004(Top 70%)8004(Top 164%)
Half13.11 mi0.68 mi21594+538603+318603+3120797(Top 78%)8121(Top 71%)8121(Top 166%)
25K15.53 mi2.42 mi21371+2238473+1308473+13020305(Top 76%)7866(Top 69%)7866(Top 161%)
30K18.64 mi3.11 mi21055+3168315+1588315+15819535(Top 73%)7495(Top 66%)7495(Top 153%)
20M20.00 mi1.36 mi20773+2828157+1588157+15817281(Top 65%)6332(Top 55%)6332(Top 130%)
21M21.00 mi1.00 mi20545+2288057+1008057+10016675(Top 63%)6007(Top 53%)6007(Top 123%)
35K21.75 mi0.75 mi20413+1327992+657992+6516525(Top 62%)6024(Top 53%)6024(Top 123%)
23M23.00 mi1.25 mi20257+1567911+817911+8117444(Top 66%)6539(Top 57%)6539(Top 134%)
24M24.00 mi1.00 mi20060+1977812+997812+9913704(Top 51%)4523(Top 40%)4523(Top 93%)
40K24.85 mi0.85 mi19843+2177689+1237689+12313762(Top 52%)4629(Top 41%)4629(Top 95%)
25.2M25.20 mi0.35 mi19769+747654+357654+3512871(Top 48%)4204(Top 37%)4204(Top 86%)
Finish26.22 mi1.02 mi19598+1717561+937561+9313782(Top 52%)4641(Top 41%)4641(Top 95%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 80%
×21story building
+97ft-345ft

Overall

21234

Females

8360

F18-39

8360

5K→10K

3.1 - 6.2 mi

Top 85%
×5story building
+79ft-138ft

Overall

22508

Females

9088

F18-39

9088

10K→15K

6.2 - 9.3 mi

Top 80%
×3story building
+67ft-78ft

Overall

21234

Females

8360

F18-39

8360

15K→20K

9.3 - 12.4 mi

Top 77%
×5story building
+106ft-86ft

Overall

20597

Females

8004

F18-39

8004

20K→Half

12.4 - 13.1 mi

Top 78%
×2story building
+19ft-37ft

Overall

20797

Females

8121

F18-39

8121

Half→25K

13.1 - 15.5 mi

Top 76%
×4story building
+66ft-88ft

Overall

20305

Females

7866

F18-39

7866

25K→30K

15.5 - 18.6 mi

Top 73%
×9story building
+181ft-148ft

Overall

19535

Females

7495

F18-39

7495

30K→20M

18.6 - 20.0 mi

Top 65%
×5story building
+64ft-50ft

Overall

17281

Females

6332

F18-39

6332

20M→21M

20.0 - 21.0 mi

Top 63%
×8story building
+106ft-24ft

Overall

16675

Females

6007

F18-39

6007

21M→35K

21.0 - 21.8 mi

Top 62%
×7story building
+17ft-86ft

Overall

16525

Females

6024

F18-39

6024

35K→23M

21.8 - 23.0 mi

Top 66%
×5story building
+23ft-63ft

Overall

17444

Females

6539

F18-39

6539

23M→24M

23.0 - 24.0 mi

Top 51%
×6story building
+12ft-82ft

Overall

13704

Females

4523

F18-39

4523

24M→40K

24.0 - 24.9 mi

Top 52%
×1story
+6ft-20ft

Overall

13762

Females

4629

F18-39

4629

40K→25.2M

24.9 - 25.2 mi

Top 48%
×1story
+13ft-16ft

Overall

12871

Females

4204

F18-39

4204

25.2M→Finish

25.2 - 26.2 mi

Top 52%
×2story building
+22ft-21ft

Overall

13782

Females

4641

F18-39

4641

Passing Analysis

Category:
Athletes Passed
2967
Passed By
526
Net Change
+2441
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22039
5K → 10K134399-265#22039#22304
10K → 15K39340+353#22304#21951
15K → 20K31915+304#21951#21647
20K → Half6512+53#21647#21594
Half → 25K24219+223#21594#21371
25K → 30K33822+316#21371#21055
30K → 20M2853+282#21055#20773
20M → 21M2291+228#20773#20545
21M → 35K1331+132#20545#20413
35K → 23M1659+156#20413#20257
23M → 24M1970+197#20257#20060
24M → 40K2170+217#20060#19843
40K → 25.2M751+74#19843#19769
25.2M → Finish1754+171#19769#19598
TOTALS2967526+2441
📊

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