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BOSTON MARATHON 2023

Stephanie Imig

Bib: 21553•F

OR

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 46%
Masters (Masters Women)
#0 / 6539
Top 35%
Division (F45-49)
#0 / 1817
Top 41%
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
8:10/mi
25:23
↑ 97↓ 3451.5%
10K· 6.21 mi
8:22/mi
51:24
↑ 79↓ 1380.4%
15K· 9.32 mi
8:20/mi
1:17:17
↑ 67↓ 78
20K· 12.43 mi
8:28/mi
1:43:35
↑ 106↓ 860.1%
Half· 13.11 mi
8:20/mi
1:49:16
↑ 19↓ 370.5%
25K· 15.53 mi
8:38/mi
2:10:12
↑ 66↓ 880.2%
30K· 18.64 mi
8:45/mi
2:37:22
↑ 181↓ 1480.2%
20M
8:45/mi
2:49:15
↑ 64↓ 500.2%
21M
9:09/mi
2:58:24
↑ 106↓ 241.6%
35K· 21.75 mi
8:40/mi
3:04:53
↑ 17↓ 861.7%
23M
8:54/mi
3:16:02
↑ 23↓ 630.6%
24M
8:22/mi
3:24:24
↓ 821.3%
40K· 24.85 mi
8:18/mi
3:31:30
↓ 200.3%
25.2M
8:48/mi
3:34:32
↑ 13↓ 160.2%
Finish· 26.22 mi
7:58/mi
3:42:39
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:49:16
Pace8:20 /mi
2nd Half
Distance13.11 mi
Time1:53:23
Pace8:39 /mi
📊Positive Split: 3.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:3025:238:1025:23
8:10
-
10K
6.21 mi11:44:3151:248:1626:01
8:22
+0:12
15K
9.32 mi12:10:241:17:178:1825:53
8:20
-0:02
20K
12.43 mi12:36:421:43:358:2026:18
8:28
+0:08
Half
13.11 mi12:42:231:49:168:205:41
8:20
-0:08
25K
15.53 mi13:03:192:10:128:2320:56
8:38
+0:18
30K
18.64 mi13:30:292:37:228:2727:10
8:45
+0:07
20M
20.00 mi13:42:222:49:158:2811:53
8:45
0:00
21M
21.00 mi13:51:312:58:248:309:09
9:09
+0:24
35K
21.75 mi13:58:003:04:538:306:29
8:40
-0:29
23M
23.00 mi14:09:093:16:028:3111:09
8:54
+0:14
24M
24.00 mi14:17:313:24:248:318:22
8:22
-0:32
40K
24.85 mi14:24:373:31:308:317:06
8:18
-0:04
25.2M
25.20 mi14:27:393:34:328:313:02
8:48
+0:30
Finish
26.22 mi14:35:463:42:398:308:07
7:58
-0:50

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

7:58 /mi

Average Pace

8:30 /mi

Slowest Pace

9:09 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:19:19

90% of race

Time at Steady Pace

23:20

10% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:29 /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 mi11:18:3025:238:1025:23
8:10
#15241
10K
6.21 mi11:44:3151:248:1626:01
8:22
#16311
15K
9.32 mi12:10:241:17:178:1825:53
8:20
#16461
20K
12.43 mi12:36:421:43:358:2026:18
8:28
#16519
Half
13.11 mi12:42:231:49:168:205:41
8:20
#16532
25K
15.53 mi13:03:192:10:128:2320:56
8:38
#16620
30K
18.64 mi13:30:292:37:228:2727:10
8:45
#16419
20M
20.00 mi13:42:222:49:158:2811:53
8:45
#16301
21M
21.00 mi13:51:312:58:248:309:09
9:09
#16153
35K
21.75 mi13:58:003:04:538:306:29
8:40
#16151
23M
23.00 mi14:09:093:16:028:3111:09
8:54
#16103
24M
24.00 mi14:17:313:24:248:318:22
8:22
#15989
40K
24.85 mi14:24:373:31:308:317:06
8:18
#15833
25.2M
25.20 mi14:27:393:34:328:313:02
8:48
#15762
Finish
26.22 mi14:35:463:42:398:308:07
7:58
#15615
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi152414800480016742(Top 63%)5754(Top 50%)5754(Top 317%)
10K6.21 mi3.10 mi16311-10705464-6645464-66417406(Top 65%)6126(Top 54%)6126(Top 337%)
15K9.32 mi3.11 mi16461-1505566-1025566-10216742(Top 63%)5754(Top 50%)5754(Top 317%)
20K12.43 mi3.11 mi16519-585626-605626-6016631(Top 62%)5717(Top 50%)5717(Top 315%)
Half13.11 mi0.68 mi16532-135634-85634-816690(Top 63%)5701(Top 50%)5701(Top 314%)
25K15.53 mi2.42 mi16620-885709-755709-7517006(Top 64%)6006(Top 53%)6006(Top 331%)
30K18.64 mi3.11 mi16419+2015638+715638+7115750(Top 59%)5352(Top 47%)5352(Top 295%)
20M20.00 mi1.36 mi16301+1185587+515587+5115145(Top 57%)5084(Top 45%)5084(Top 280%)
21M21.00 mi1.00 mi16153+1485507+805507+8014247(Top 54%)4624(Top 40%)4624(Top 254%)
35K21.75 mi0.75 mi16151+25528-215528-2116249(Top 61%)5834(Top 51%)5834(Top 321%)
23M23.00 mi1.25 mi16103+485512+165512+1615578(Top 59%)5497(Top 48%)5497(Top 303%)
24M24.00 mi1.00 mi15989+1145464+485464+4813685(Top 51%)4504(Top 39%)4504(Top 248%)
40K24.85 mi0.85 mi15833+1565381+835381+8312137(Top 46%)3762(Top 33%)3762(Top 207%)
25.2M25.20 mi0.35 mi15762+715342+395342+3911443(Top 43%)3455(Top 30%)3455(Top 190%)
Finish26.22 mi1.02 mi15615+1475267+755267+7511923(Top 45%)3680(Top 32%)3680(Top 203%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 63%
×21story building
+97ft-345ft

Overall

16742

Females

5754

F45-49

5754

5K→10K

3.1 - 6.2 mi

Top 65%
×5story building
+79ft-138ft

Overall

17406

Females

6126

F45-49

6126

10K→15K

6.2 - 9.3 mi

Top 63%
×3story building
+67ft-78ft

Overall

16742

Females

5754

F45-49

5754

15K→20K

9.3 - 12.4 mi

Top 62%
×5story building
+106ft-86ft

Overall

16631

Females

5717

F45-49

5717

20K→Half

12.4 - 13.1 mi

Top 63%
×2story building
+19ft-37ft

Overall

16690

Females

5701

F45-49

5701

Half→25K

13.1 - 15.5 mi

Top 64%
×4story building
+66ft-88ft

Overall

17006

Females

6006

F45-49

6006

25K→30K

15.5 - 18.6 mi

Top 59%
×9story building
+181ft-148ft

Overall

15750

Females

5352

F45-49

5352

30K→20M

18.6 - 20.0 mi

Top 57%
×5story building
+64ft-50ft

Overall

15145

Females

5084

F45-49

5084

20M→21M

20.0 - 21.0 mi

Top 54%
×8story building
+106ft-24ft

Overall

14247

Females

4624

F45-49

4624

21M→35K

21.0 - 21.8 mi

Top 61%
×7story building
+17ft-86ft

Overall

16249

Females

5834

F45-49

5834

35K→23M

21.8 - 23.0 mi

Top 59%
×5story building
+23ft-63ft

Overall

15578

Females

5497

F45-49

5497

23M→24M

23.0 - 24.0 mi

Top 51%
×6story building
+12ft-82ft

Overall

13685

Females

4504

F45-49

4504

24M→40K

24.0 - 24.9 mi

Top 46%
×1story
+6ft-20ft

Overall

12137

Females

3762

F45-49

3762

40K→25.2M

24.9 - 25.2 mi

Top 43%
×1story
+13ft-16ft

Overall

11443

Females

3455

F45-49

3455

25.2M→Finish

25.2 - 26.2 mi

Top 45%
×2story building
+22ft-21ft

Overall

11923

Females

3680

F45-49

3680

Passing Analysis

Category:
Athletes Passed
1731
Passed By
2105
Net Change
-374
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15241
5K → 10K441114-1070#15241#16311
10K → 15K136286-150#16311#16461
15K → 20K146204-58#16461#16519
20K → Half2437-13#16519#16532
Half → 25K106194-88#16532#16620
25K → 30K28079+201#16620#16419
30K → 20M14325+118#16419#16301
20M → 21M17224+148#16301#16153
21M → 35K5351+2#16153#16151
35K → 23M11163+48#16151#16103
23M → 24M12915+114#16103#15989
24M → 40K1615+156#15989#15833
40K → 25.2M743+71#15833#15762
25.2M → Finish1525+147#15762#15615
TOTALS17312105-374
📊

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