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BOSTON MARATHON 2023

Stacey Forni

Bib: 27066•F

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F50-54)
#0 / 1207
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
10:27/mi
32:29
↑ 97↓ 3451.5%
10K· 6.21 mi
10:37/mi
1:05:28
↑ 79↓ 1380.4%
15K· 9.32 mi
10:30/mi
1:38:04
↑ 67↓ 78
20K· 12.43 mi
10:38/mi
2:11:07
↑ 106↓ 860.1%
Half· 13.11 mi
11:41/mi
2:19:05
↑ 19↓ 370.5%
25K· 15.53 mi
10:47/mi
2:45:14
↑ 66↓ 880.2%
30K· 18.64 mi
11:28/mi
3:20:52
↑ 181↓ 1480.2%
20M
12:18/mi
3:37:35
↑ 64↓ 500.2%
21M
13:27/mi
3:51:02
↑ 106↓ 241.6%
35K· 21.75 mi
11:48/mi
3:59:52
↑ 17↓ 861.7%
23M
11:56/mi
4:14:49
↑ 23↓ 630.6%
24M
12:00/mi
4:26:49
↓ 821.3%
40K· 24.85 mi
12:50/mi
4:37:47
↓ 200.3%
25.2M
13:23/mi
4:42:24
↑ 13↓ 160.2%
Finish· 26.22 mi
11:12/mi
4:53:49
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:19:05
Pace10:37 /mi
2nd Half
Distance13.11 mi
Time2:34:44
Pace11:48 /mi
📊Positive Split: 11.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:53:4232:2910:2732:29
10:27
-
10K
6.21 mi12:26:411:05:2810:3232:59
10:37
+0:10
15K
9.32 mi12:59:171:38:0410:3132:36
10:30
-0:07
20K
12.43 mi13:32:202:11:0710:3333:03
10:38
+0:08
Half
13.11 mi13:40:182:19:0510:377:58
11:41
+1:03
25K
15.53 mi14:06:272:45:1410:3826:09
10:47
-0:54
30K
18.64 mi14:42:053:20:5210:4735:38
11:28
+0:41
20M
20.00 mi14:58:483:37:3510:5316:43
12:18
+0:50
21M
21.00 mi15:12:153:51:0211:0013:27
13:27
+1:09
35K
21.75 mi15:21:053:59:5211:028:50
11:48
-1:39
23M
23.00 mi15:36:024:14:4911:0514:57
11:56
+0:08
24M
24.00 mi15:48:024:26:4911:0712:00
12:00
+0:04
40K
24.85 mi15:59:004:37:4711:1110:58
12:50
+0:50
25.2M
25.20 mi16:03:374:42:2411:124:37
13:23
+0:33
Finish
26.22 mi16:15:024:53:4911:1311:25
11:12
-2:11

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

10:27 /mi

Average Pace

11:13 /mi

Slowest Pace

13:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:37:16

54% of race

Time at Steady Pace

1:30:48

31% of race

Time at Slower Pace

45:45

16% of race

Average Pace: 11:12 /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 mi11:53:4232:2910:2732:29
10:27
#24598
10K
6.21 mi12:26:411:05:2810:3232:59
10:37
#24777
15K
9.32 mi12:59:171:38:0410:3132:36
10:30
#24665
20K
12.43 mi13:32:202:11:0710:3333:03
10:38
#24501
Half
13.11 mi13:40:182:19:0510:377:58
11:41
#24607
25K
15.53 mi14:06:272:45:1410:3826:09
10:47
#24430
30K
18.64 mi14:42:053:20:5210:4735:38
11:28
#24302
20M
20.00 mi14:58:483:37:3510:5316:43
12:18
#24342
21M
21.00 mi15:12:153:51:0211:0013:27
13:27
#24364
35K
21.75 mi15:21:053:59:5211:028:50
11:48
#24368
23M
23.00 mi15:36:024:14:4911:0514:57
11:56
#24351
24M
24.00 mi15:48:024:26:4911:0712:00
12:00
#24377
40K
24.85 mi15:59:004:37:4711:1110:58
12:50
#24412
25.2M
25.20 mi16:03:374:42:2411:124:37
13:23
#24422
Finish
26.22 mi16:15:024:53:4911:1311:25
11:12
#24428
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi24598102161021624445(Top 92%)10149(Top 89%)10149(Top 841%)
10K6.21 mi3.10 mi24777-17910312-9610312-9624885(Top 93%)10377(Top 91%)10377(Top 860%)
15K9.32 mi3.11 mi24665+11210258+5410258+5424445(Top 92%)10149(Top 89%)10149(Top 841%)
20K12.43 mi3.11 mi24501+16410175+8310175+8324087(Top 90%)9962(Top 87%)9962(Top 825%)
Half13.11 mi0.68 mi24607-10610237-6210237-6225624(Top 96%)10857(Top 95%)10857(Top 900%)
25K15.53 mi2.42 mi24430+17710150+8710150+8723654(Top 89%)9762(Top 85%)9762(Top 809%)
30K18.64 mi3.11 mi24302+12810098+5210098+5223819(Top 89%)9912(Top 87%)9912(Top 821%)
20M20.00 mi1.36 mi24342-4010125-2710125-2724546(Top 92%)10365(Top 91%)10365(Top 859%)
21M21.00 mi1.00 mi24364-2210144-1910144-1924540(Top 92%)10366(Top 91%)10366(Top 859%)
35K21.75 mi0.75 mi24368-410156-1210156-1224492(Top 92%)10392(Top 91%)10392(Top 861%)
23M23.00 mi1.25 mi24351+1710154+210154+223928(Top 90%)10083(Top 88%)10083(Top 835%)
24M24.00 mi1.00 mi24377-2610181-2710181-2724538(Top 92%)10448(Top 91%)10448(Top 866%)
40K24.85 mi0.85 mi24412-3510203-2210203-2224797(Top 93%)10567(Top 93%)10567(Top 875%)
25.2M25.20 mi0.35 mi24422-1010208-510208-524420(Top 92%)10387(Top 91%)10387(Top 861%)
Finish26.22 mi1.02 mi24428-610219-1110219-1124306(Top 91%)10306(Top 90%)10306(Top 854%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 92%
×21story building
+97ft-345ft

Overall

24445

Females

10149

F50-54

10149

5K→10K

3.1 - 6.2 mi

Top 93%
×5story building
+79ft-138ft

Overall

24885

Females

10377

F50-54

10377

10K→15K

6.2 - 9.3 mi

Top 92%
×3story building
+67ft-78ft

Overall

24445

Females

10149

F50-54

10149

15K→20K

9.3 - 12.4 mi

Top 90%
×5story building
+106ft-86ft

Overall

24087

Females

9962

F50-54

9962

20K→Half

12.4 - 13.1 mi

Top 96%
×2story building
+19ft-37ft

Overall

25624

Females

10857

F50-54

10857

Half→25K

13.1 - 15.5 mi

Top 89%
×4story building
+66ft-88ft

Overall

23654

Females

9762

F50-54

9762

25K→30K

15.5 - 18.6 mi

Top 89%
×9story building
+181ft-148ft

Overall

23819

Females

9912

F50-54

9912

30K→20M

18.6 - 20.0 mi

Top 92%
×5story building
+64ft-50ft

Overall

24546

Females

10365

F50-54

10365

20M→21M

20.0 - 21.0 mi

Top 92%
×8story building
+106ft-24ft

Overall

24540

Females

10366

F50-54

10366

21M→35K

21.0 - 21.8 mi

Top 92%
×7story building
+17ft-86ft

Overall

24492

Females

10392

F50-54

10392

35K→23M

21.8 - 23.0 mi

Top 90%
×5story building
+23ft-63ft

Overall

23928

Females

10083

F50-54

10083

23M→24M

23.0 - 24.0 mi

Top 92%
×6story building
+12ft-82ft

Overall

24538

Females

10448

F50-54

10448

24M→40K

24.0 - 24.9 mi

Top 93%
×1story
+6ft-20ft

Overall

24797

Females

10567

F50-54

10567

40K→25.2M

24.9 - 25.2 mi

Top 92%
×1story
+13ft-16ft

Overall

24420

Females

10387

F50-54

10387

25.2M→Finish

25.2 - 26.2 mi

Top 91%
×2story building
+22ft-21ft

Overall

24306

Females

10306

F50-54

10306

Passing Analysis

Category:
Athletes Passed
1055
Passed By
885
Net Change
+170
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24598
5K → 10K116295-179#24598#24777
10K → 15K17260+112#24777#24665
15K → 20K18925+164#24665#24501
20K → Half6112-106#24501#24607
Half → 25K19619+177#24607#24430
25K → 30K18153+128#24430#24302
30K → 20M3373-40#24302#24342
20M → 21M3254-22#24342#24364
21M → 35K3034-4#24364#24368
35K → 23M3922+17#24368#24351
23M → 24M1844-26#24351#24377
24M → 40K1752-35#24377#24412
40K → 25.2M616-10#24412#24422
25.2M → Finish2026-6#24422#24428
TOTALS1055885+170
📊

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