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BOSTON MARATHON 2023

Stacey Bailey

Bib: 11194•F

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 29%
Gender (Female)
#0 / 11423
Top 10%
Masters (Masters Women)
#0 / 6539
Top 3%
Division (F45-49)
#0 / 1817
Top 3%
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
7:34/mi
23:29
↑ 97↓ 3451.5%
10K· 6.21 mi
7:24/mi
46:29
↑ 79↓ 1380.4%
15K· 9.32 mi
7:21/mi
1:09:20
↑ 67↓ 78
20K· 12.43 mi
7:24/mi
1:32:20
↑ 106↓ 860.1%
Half· 13.11 mi
7:21/mi
1:37:21
↑ 19↓ 370.5%
25K· 15.53 mi
7:21/mi
1:55:11
↑ 66↓ 880.2%
30K· 18.64 mi
7:29/mi
2:18:26
↑ 181↓ 1480.2%
20M
7:24/mi
2:28:30
↑ 64↓ 500.2%
21M
7:50/mi
2:36:20
↑ 106↓ 241.6%
35K· 21.75 mi
7:09/mi
2:41:41
↑ 17↓ 861.7%
23M
7:28/mi
2:51:02
↑ 23↓ 630.6%
24M
7:04/mi
2:58:06
↓ 821.3%
40K· 24.85 mi
7:19/mi
3:04:21
↓ 200.3%
25.2M
8:01/mi
3:07:07
↑ 13↓ 160.2%
Finish· 26.22 mi
7:27/mi
3:14:43
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:37:21
Pace7:26 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:37:22
Pace7:26 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:4523:297:3423:29
7:34
-
10K
6.21 mi11:13:4546:297:2923:00
7:24
-0:10
15K
9.32 mi11:36:361:09:207:2622:51
7:21
-0:03
20K
12.43 mi11:59:361:32:207:2623:00
7:24
+0:03
Half
13.11 mi12:04:371:37:217:265:01
7:21
-0:03
25K
15.53 mi12:22:271:55:117:2517:50
7:21
0:00
30K
18.64 mi12:45:422:18:267:2623:15
7:29
+0:08
20M
20.00 mi12:55:462:28:307:2510:04
7:24
-0:05
21M
21.00 mi13:03:362:36:207:277:50
7:50
+0:26
35K
21.75 mi13:08:572:41:417:265:21
7:09
-0:41
23M
23.00 mi13:18:182:51:027:269:21
7:28
+0:19
24M
24.00 mi13:25:222:58:067:257:04
7:04
-0:24
40K
24.85 mi13:31:373:04:217:256:15
7:19
+0:15
25.2M
25.20 mi13:34:233:07:077:262:46
8:01
+0:42
Finish
26.22 mi13:41:593:14:437:267:36
7:27
-0:34

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

7:04 /mi

Average Pace

7:26 /mi

Slowest Pace

8:01 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:04:07

95% of race

Time at Steady Pace

10:36

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:26 /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 mi10:50:4523:297:3423:29
7:34
#10145
10K
6.21 mi11:13:4546:297:2923:00
7:24
#9842
15K
9.32 mi11:36:361:09:207:2622:51
7:21
#9515
20K
12.43 mi11:59:361:32:207:2623:00
7:24
#9234
Half
13.11 mi12:04:371:37:217:265:01
7:21
#9217
25K
15.53 mi12:22:271:55:117:2517:50
7:21
#8940
30K
18.64 mi12:45:422:18:267:2623:15
7:29
#8577
20M
20.00 mi12:55:462:28:307:2510:04
7:24
#8356
21M
21.00 mi13:03:362:36:207:277:50
7:50
#8229
35K
21.75 mi13:08:572:41:417:265:21
7:09
#8130
23M
23.00 mi13:18:182:51:027:269:21
7:28
#7966
24M
24.00 mi13:25:222:58:067:257:04
7:04
#7799
40K
24.85 mi13:31:373:04:217:256:15
7:19
#7670
25.2M
25.20 mi13:34:233:07:077:262:46
8:01
#7658
Finish
26.22 mi13:41:593:14:437:267:36
7:27
#7653
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi10145192619268983(Top 34%)1438(Top 13%)1438(Top 79%)
10K6.21 mi3.10 mi9842+3031760+1661760+1669660(Top 36%)1678(Top 15%)1678(Top 92%)
15K9.32 mi3.11 mi9515+3271621+1391621+1398983(Top 34%)1438(Top 13%)1438(Top 79%)
20K12.43 mi3.11 mi9234+2811531+901531+908547(Top 32%)1311(Top 11%)1311(Top 72%)
Half13.11 mi0.68 mi9217+171525+61525+69058(Top 34%)1482(Top 13%)1482(Top 82%)
25K15.53 mi2.42 mi8940+2771427+981427+987674(Top 29%)1078(Top 9%)1078(Top 59%)
30K18.64 mi3.11 mi8577+3631324+1031324+1037125(Top 27%)972(Top 9%)972(Top 53%)
20M20.00 mi1.36 mi8356+2211276+481276+486256(Top 23%)776(Top 7%)776(Top 43%)
21M21.00 mi1.00 mi8229+1271241+351241+356370(Top 24%)908(Top 8%)908(Top 50%)
35K21.75 mi0.75 mi8130+991213+281213+286271(Top 24%)852(Top 7%)852(Top 47%)
23M23.00 mi1.25 mi7966+1641175+381175+386264(Top 24%)906(Top 8%)906(Top 50%)
24M24.00 mi1.00 mi7799+1671133+421133+425054(Top 19%)592(Top 5%)592(Top 33%)
40K24.85 mi0.85 mi7670+1291102+311102+315557(Top 21%)833(Top 7%)833(Top 46%)
25.2M25.20 mi0.35 mi7658+121109-71109-76710(Top 25%)1296(Top 11%)1296(Top 71%)
Finish26.22 mi1.02 mi7653+51130-211130-218258(Top 31%)1933(Top 17%)1933(Top 106%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 34%
×21story building
+97ft-345ft

Overall

8983

Females

1438

F45-49

1438

5K→10K

3.1 - 6.2 mi

Top 36%
×5story building
+79ft-138ft

Overall

9660

Females

1678

F45-49

1678

10K→15K

6.2 - 9.3 mi

Top 34%
×3story building
+67ft-78ft

Overall

8983

Females

1438

F45-49

1438

15K→20K

9.3 - 12.4 mi

Top 32%
×5story building
+106ft-86ft

Overall

8547

Females

1311

F45-49

1311

20K→Half

12.4 - 13.1 mi

Top 34%
×2story building
+19ft-37ft

Overall

9058

Females

1482

F45-49

1482

Half→25K

13.1 - 15.5 mi

Top 29%
×4story building
+66ft-88ft

Overall

7674

Females

1078

F45-49

1078

25K→30K

15.5 - 18.6 mi

Top 27%
×9story building
+181ft-148ft

Overall

7125

Females

972

F45-49

972

30K→20M

18.6 - 20.0 mi

Top 23%
×5story building
+64ft-50ft

Overall

6256

Females

776

F45-49

776

20M→21M

20.0 - 21.0 mi

Top 24%
×8story building
+106ft-24ft

Overall

6370

Females

908

F45-49

908

21M→35K

21.0 - 21.8 mi

Top 24%
×7story building
+17ft-86ft

Overall

6271

Females

852

F45-49

852

35K→23M

21.8 - 23.0 mi

Top 24%
×5story building
+23ft-63ft

Overall

6264

Females

906

F45-49

906

23M→24M

23.0 - 24.0 mi

Top 19%
×6story building
+12ft-82ft

Overall

5054

Females

592

F45-49

592

24M→40K

24.0 - 24.9 mi

Top 21%
×1story
+6ft-20ft

Overall

5557

Females

833

F45-49

833

40K→25.2M

24.9 - 25.2 mi

Top 25%
×1story
+13ft-16ft

Overall

6710

Females

1296

F45-49

1296

25.2M→Finish

25.2 - 26.2 mi

Top 31%
×2story building
+22ft-21ft

Overall

8258

Females

1933

F45-49

1933

Passing Analysis

Category:
Athletes Passed
2941*
Passed By
449
Net Change
+2492
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10145
5K → 10K482*179+303#10145#9842
10K → 15K37548+327#9842#9515
15K → 20K31231+281#9515#9234
20K → Half3518+17#9234#9217
Half → 25K2836+277#9217#8940
25K → 30K38219+363#8940#8577
30K → 20M23413+221#8577#8356
20M → 21M14316+127#8356#8229
21M → 35K1056+99#8229#8130
35K → 23M18016+164#8130#7966
23M → 24M1736+167#7966#7799
24M → 40K13910+129#7799#7670
40K → 25.2M3523+12#7670#7658
25.2M → Finish6358+5#7658#7653
TOTALS2941*449+2492

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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