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BOSTON MARATHON 2023

Janina Simmons

Bib: 13957•F

NC

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 49%
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
7:44/mi
24:02
↑ 97↓ 3451.5%
10K· 6.21 mi
7:52/mi
48:28
↑ 79↓ 1380.4%
15K· 9.32 mi
8:08/mi
1:13:43
↑ 67↓ 78
20K· 12.43 mi
8:31/mi
1:40:11
↑ 106↓ 860.1%
Half· 13.11 mi
8:11/mi
1:45:46
↑ 19↓ 370.5%
25K· 15.53 mi
8:29/mi
2:06:20
↑ 66↓ 880.2%
30K· 18.64 mi
9:00/mi
2:34:17
↑ 181↓ 1480.2%
20M
9:08/mi
2:46:42
↑ 64↓ 500.2%
21M
9:49/mi
2:56:31
↑ 106↓ 241.6%
35K· 21.75 mi
9:04/mi
3:03:18
↑ 17↓ 861.7%
23M
9:17/mi
3:14:55
↑ 23↓ 630.6%
24M
9:26/mi
3:24:21
↓ 821.3%
40K· 24.85 mi
9:17/mi
3:32:17
↓ 200.3%
25.2M
10:12/mi
3:35:48
↑ 13↓ 160.2%
Finish· 26.22 mi
8:59/mi
3:44:57
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:45:46
Pace8:04 /mi
2nd Half
Distance13.11 mi
Time1:59:11
Pace9:06 /mi
📊Positive Split: 12.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:3624:027:4424:02
7:44
-
10K
6.21 mi11:17:0248:287:4824:26
7:52
+0:08
15K
9.32 mi11:42:171:13:437:5525:15
8:08
+0:16
20K
12.43 mi12:08:451:40:118:0426:28
8:31
+0:23
Half
13.11 mi12:14:201:45:468:045:35
8:11
-0:20
25K
15.53 mi12:34:542:06:208:0820:34
8:29
+0:18
30K
18.64 mi13:02:512:34:178:1727:57
9:00
+0:31
20M
20.00 mi13:15:162:46:428:2012:25
9:08
+0:08
21M
21.00 mi13:25:052:56:318:249:49
9:49
+0:41
35K
21.75 mi13:31:523:03:188:266:47
9:04
-0:45
23M
23.00 mi13:43:293:14:558:2811:37
9:17
+0:13
24M
24.00 mi13:52:553:24:218:319:26
9:26
+0:09
40K
24.85 mi14:00:513:32:178:327:56
9:17
-0:09
25.2M
25.20 mi14:04:223:35:488:343:31
10:12
+0:55
Finish
26.22 mi14:13:313:44:578:359:09
8:59
-1:13

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

7:44 /mi

Average Pace

8:35 /mi

Slowest Pace

10:12 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:06:20

56% of race

Time at Steady Pace

1:15:51

34% of race

Time at Slower Pace

22:46

10% of race

Average Pace: 8:35 /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 mi10:52:3624:027:4424:02
7:44
#11801
10K
6.21 mi11:17:0248:287:4824:26
7:52
#12709
15K
9.32 mi11:42:171:13:437:5525:15
8:08
#13655
20K
12.43 mi12:08:451:40:118:0426:28
8:31
#14570
Half
13.11 mi12:14:201:45:468:045:35
8:11
#14638
25K
15.53 mi12:34:542:06:208:0820:34
8:29
#14863
30K
18.64 mi13:02:512:34:178:1727:57
9:00
#15306
20M
20.00 mi13:15:162:46:428:2012:25
9:08
#15470
21M
21.00 mi13:25:052:56:318:249:49
9:49
#15569
35K
21.75 mi13:31:523:03:188:266:47
9:04
#15675
23M
23.00 mi13:43:293:14:558:2811:37
9:17
#15766
24M
24.00 mi13:52:553:24:218:319:26
9:26
#15974
40K
24.85 mi14:00:513:32:178:327:56
9:17
#16029
25.2M
25.20 mi14:04:223:35:488:343:31
10:12
#16061
Finish
26.22 mi14:13:313:44:578:359:09
8:59
#16165
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi118012757275715355(Top 58%)4884(Top 43%)4884(Top 100%)
10K6.21 mi3.10 mi12709-9083269-5123269-51213703(Top 51%)3863(Top 34%)3863(Top 79%)
15K9.32 mi3.11 mi13655-9463856-5873856-58715355(Top 58%)4884(Top 43%)4884(Top 100%)
20K12.43 mi3.11 mi14570-9154414-5584414-55816981(Top 64%)5915(Top 52%)5915(Top 121%)
Half13.11 mi0.68 mi14638-684455-414455-4115763(Top 59%)5169(Top 45%)5169(Top 106%)
25K15.53 mi2.42 mi14863-2254626-1714626-17116096(Top 60%)5503(Top 48%)5503(Top 113%)
30K18.64 mi3.11 mi15306-4434947-3214947-32117151(Top 64%)6158(Top 54%)6158(Top 126%)
20M20.00 mi1.36 mi15470-1645073-1265073-12617257(Top 65%)6308(Top 55%)6308(Top 129%)
21M21.00 mi1.00 mi15569-995157-845157-8417330(Top 65%)6387(Top 56%)6387(Top 131%)
35K21.75 mi0.75 mi15675-1065241-845241-8418174(Top 68%)6926(Top 61%)6926(Top 142%)
23M23.00 mi1.25 mi15766-915320-795320-7917417(Top 65%)6512(Top 57%)6512(Top 133%)
24M24.00 mi1.00 mi15974-2085459-1395459-13918974(Top 71%)7426(Top 65%)7426(Top 152%)
40K24.85 mi0.85 mi16029-555495-365495-3617435(Top 65%)6644(Top 58%)6644(Top 136%)
25.2M25.20 mi0.35 mi16061-325510-155510-1518132(Top 68%)7012(Top 61%)7012(Top 144%)
Finish26.22 mi1.02 mi16165-1045590-805590-8017886(Top 67%)6848(Top 60%)6848(Top 140%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 58%
×21story building
+97ft-345ft

Overall

15355

Females

4884

F18-39

4884

5K→10K

3.1 - 6.2 mi

Top 51%
×5story building
+79ft-138ft

Overall

13703

Females

3863

F18-39

3863

10K→15K

6.2 - 9.3 mi

Top 58%
×3story building
+67ft-78ft

Overall

15355

Females

4884

F18-39

4884

15K→20K

9.3 - 12.4 mi

Top 64%
×5story building
+106ft-86ft

Overall

16981

Females

5915

F18-39

5915

20K→Half

12.4 - 13.1 mi

Top 59%
×2story building
+19ft-37ft

Overall

15763

Females

5169

F18-39

5169

Half→25K

13.1 - 15.5 mi

Top 60%
×4story building
+66ft-88ft

Overall

16096

Females

5503

F18-39

5503

25K→30K

15.5 - 18.6 mi

Top 64%
×9story building
+181ft-148ft

Overall

17151

Females

6158

F18-39

6158

30K→20M

18.6 - 20.0 mi

Top 65%
×5story building
+64ft-50ft

Overall

17257

Females

6308

F18-39

6308

20M→21M

20.0 - 21.0 mi

Top 65%
×8story building
+106ft-24ft

Overall

17330

Females

6387

F18-39

6387

21M→35K

21.0 - 21.8 mi

Top 68%
×7story building
+17ft-86ft

Overall

18174

Females

6926

F18-39

6926

35K→23M

21.8 - 23.0 mi

Top 65%
×5story building
+23ft-63ft

Overall

17417

Females

6512

F18-39

6512

23M→24M

23.0 - 24.0 mi

Top 71%
×6story building
+12ft-82ft

Overall

18974

Females

7426

F18-39

7426

24M→40K

24.0 - 24.9 mi

Top 65%
×1story
+6ft-20ft

Overall

17435

Females

6644

F18-39

6644

40K→25.2M

24.9 - 25.2 mi

Top 68%
×1story
+13ft-16ft

Overall

18132

Females

7012

F18-39

7012

25.2M→Finish

25.2 - 26.2 mi

Top 67%
×2story building
+22ft-21ft

Overall

17886

Females

6848

F18-39

6848

Passing Analysis

Category:
Athletes Passed
601
Passed By
4965
Net Change
-4364
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11801
5K → 10K68976-908#11801#12709
10K → 15K29975-946#12709#13655
15K → 20K39954-915#13655#14570
20K → Half1078-68#14570#14638
Half → 25K87312-225#14638#14863
25K → 30K66509-443#14863#15306
30K → 20M41205-164#15306#15470
20M → 21M59158-99#15470#15569
21M → 35K20126-106#15569#15675
35K → 23M55146-91#15675#15766
23M → 24M31239-208#15766#15974
24M → 40K4095-55#15974#16029
40K → 25.2M1648-32#16029#16061
25.2M → Finish40144-104#16061#16165
TOTALS6014965-4364
📊

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