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BOSTON MARATHON 2023

Beth Delahunty

Bib: 23113•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
9:09/mi
28:25
↑ 97↓ 3451.5%
10K· 6.21 mi
9:27/mi
57:47
↑ 79↓ 1380.4%
15K· 9.32 mi
9:36/mi
1:27:38
↑ 67↓ 78
20K· 12.43 mi
9:13/mi
1:56:16
↑ 106↓ 860.1%
Half· 13.11 mi
8:55/mi
2:02:21
↑ 19↓ 370.5%
25K· 15.53 mi
9:16/mi
2:24:49
↑ 66↓ 880.2%
30K· 18.64 mi
9:01/mi
2:52:51
↑ 181↓ 1480.2%
20M
8:41/mi
3:04:39
↑ 64↓ 500.2%
21M
9:18/mi
3:13:57
↑ 106↓ 241.6%
35K· 21.75 mi
8:35/mi
3:20:22
↑ 17↓ 861.7%
23M
8:43/mi
3:31:17
↑ 23↓ 630.6%
24M
8:37/mi
3:39:54
↓ 821.3%
40K· 24.85 mi
8:31/mi
3:47:11
↓ 200.3%
25.2M
9:05/mi
3:50:19
↑ 13↓ 160.2%
Finish· 26.22 mi
8:15/mi
3:58:43
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time2:02:21
Pace9:20 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:56:22
Pace8:53 /mi
📊Negative Split: 4.9% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:24:0428:259:0928:25
9:09
-
10K
6.21 mi11:53:2657:479:1829:22
9:27
+0:18
15K
9.32 mi12:23:171:27:389:2429:51
9:36
+0:09
20K
12.43 mi12:51:551:56:169:2128:38
9:13
-0:23
Half
13.11 mi12:58:002:02:219:206:05
8:55
-0:18
25K
15.53 mi13:20:282:24:499:1922:28
9:16
+0:21
30K
18.64 mi13:48:302:52:519:1628:02
9:01
-0:15
20M
20.00 mi14:00:183:04:399:1411:48
8:41
-0:20
21M
21.00 mi14:09:363:13:579:149:18
9:18
+0:37
35K
21.75 mi14:16:013:20:229:136:25
8:35
-0:43
23M
23.00 mi14:26:563:31:179:1110:55
8:43
+0:08
24M
24.00 mi14:35:333:39:549:108:37
8:37
-0:06
40K
24.85 mi14:42:503:47:119:087:17
8:31
-0:06
25.2M
25.20 mi14:45:583:50:199:083:08
9:05
+0:34
Finish
26.22 mi14:54:223:58:439:078:24
8:15
-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

8:15 /mi

Average Pace

9:07 /mi

Slowest Pace

9:36 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:27:33

37% of race

Time at Steady Pace

2:31:10

63% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:06 /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 mi11:24:0428:259:0928:25
9:09
#21035
10K
6.21 mi11:53:2657:479:1829:22
9:27
#21725
15K
9.32 mi12:23:171:27:389:2429:51
9:36
#21990
20K
12.43 mi12:51:551:56:169:2128:38
9:13
#21687
Half
13.11 mi12:58:002:02:219:206:05
8:55
#21613
25K
15.53 mi13:20:282:24:499:1922:28
9:16
#21353
30K
18.64 mi13:48:302:52:519:1628:02
9:01
#20719
20M
20.00 mi14:00:183:04:399:1411:48
8:41
#20375
21M
21.00 mi14:09:363:13:579:149:18
9:18
#20102
35K
21.75 mi14:16:013:20:229:136:25
8:35
#19949
23M
23.00 mi14:26:563:31:179:1110:55
8:43
#19685
24M
24.00 mi14:35:333:39:549:108:37
8:37
#19516
40K
24.85 mi14:42:503:47:119:087:17
8:31
#19322
25.2M
25.20 mi14:45:583:50:199:083:08
9:05
#19239
Finish
26.22 mi14:54:223:58:439:078:24
8:15
#19084
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi210358391839122539(Top 85%)9089(Top 80%)9089(Top 753%)
10K6.21 mi3.10 mi21725-6908702-3118702-31122375(Top 84%)9016(Top 79%)9016(Top 747%)
15K9.32 mi3.11 mi21990-2658834-1328834-13222539(Top 85%)9089(Top 80%)9089(Top 753%)
20K12.43 mi3.11 mi21687+3038653+1818653+18120642(Top 78%)8025(Top 70%)8025(Top 665%)
Half13.11 mi0.68 mi21613+748615+388615+3820072(Top 75%)7699(Top 67%)7699(Top 638%)
25K15.53 mi2.42 mi21353+2608462+1538462+15320081(Top 75%)7739(Top 68%)7739(Top 641%)
30K18.64 mi3.11 mi20719+6348116+3468116+34617311(Top 65%)6254(Top 55%)6254(Top 518%)
20M20.00 mi1.36 mi20375+3447951+1657951+16514791(Top 56%)4891(Top 43%)4891(Top 405%)
21M21.00 mi1.00 mi20102+2737809+1427809+14215027(Top 56%)5081(Top 44%)5081(Top 421%)
35K21.75 mi0.75 mi19949+1537722+877722+8715792(Top 59%)5587(Top 49%)5587(Top 463%)
23M23.00 mi1.25 mi19685+2647577+1457577+14514545(Top 55%)4939(Top 43%)4939(Top 409%)
24M24.00 mi1.00 mi19516+1697493+847493+8415219(Top 57%)5370(Top 47%)5370(Top 445%)
40K24.85 mi0.85 mi19322+1947383+1107383+11013530(Top 51%)4507(Top 39%)4507(Top 373%)
25.2M25.20 mi0.35 mi19239+837337+467337+4613135(Top 49%)4333(Top 38%)4333(Top 359%)
Finish26.22 mi1.02 mi19084+1557256+817256+8113778(Top 52%)4637(Top 41%)4637(Top 384%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 85%
×21story building
+97ft-345ft

Overall

22539

Females

9089

F50-54

9089

5K→10K

3.1 - 6.2 mi

Top 84%
×5story building
+79ft-138ft

Overall

22375

Females

9016

F50-54

9016

10K→15K

6.2 - 9.3 mi

Top 85%
×3story building
+67ft-78ft

Overall

22539

Females

9089

F50-54

9089

15K→20K

9.3 - 12.4 mi

Top 78%
×5story building
+106ft-86ft

Overall

20642

Females

8025

F50-54

8025

20K→Half

12.4 - 13.1 mi

Top 75%
×2story building
+19ft-37ft

Overall

20072

Females

7699

F50-54

7699

Half→25K

13.1 - 15.5 mi

Top 75%
×4story building
+66ft-88ft

Overall

20081

Females

7739

F50-54

7739

25K→30K

15.5 - 18.6 mi

Top 65%
×9story building
+181ft-148ft

Overall

17311

Females

6254

F50-54

6254

30K→20M

18.6 - 20.0 mi

Top 56%
×5story building
+64ft-50ft

Overall

14791

Females

4891

F50-54

4891

20M→21M

20.0 - 21.0 mi

Top 56%
×8story building
+106ft-24ft

Overall

15027

Females

5081

F50-54

5081

21M→35K

21.0 - 21.8 mi

Top 59%
×7story building
+17ft-86ft

Overall

15792

Females

5587

F50-54

5587

35K→23M

21.8 - 23.0 mi

Top 55%
×5story building
+23ft-63ft

Overall

14545

Females

4939

F50-54

4939

23M→24M

23.0 - 24.0 mi

Top 57%
×6story building
+12ft-82ft

Overall

15219

Females

5370

F50-54

5370

24M→40K

24.0 - 24.9 mi

Top 51%
×1story
+6ft-20ft

Overall

13530

Females

4507

F50-54

4507

40K→25.2M

24.9 - 25.2 mi

Top 49%
×1story
+13ft-16ft

Overall

13135

Females

4333

F50-54

4333

25.2M→Finish

25.2 - 26.2 mi

Top 52%
×2story building
+22ft-21ft

Overall

13778

Females

4637

F50-54

4637

Passing Analysis

Category:
Athletes Passed
3105
Passed By
1154
Net Change
+1951
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21035
5K → 10K68758-690#21035#21725
10K → 15K78343-265#21725#21990
15K → 20K32118+303#21990#21687
20K → Half751+74#21687#21613
Half → 25K27616+260#21613#21353
25K → 30K6351+634#21353#20719
30K → 20M3451+344#20719#20375
20M → 21M2741+273#20375#20102
21M → 35K1530+153#20102#19949
35K → 23M2673+264#19949#19685
23M → 24M1723+169#19685#19516
24M → 40K1951+194#19516#19322
40K → 25.2M841+83#19322#19239
25.2M → Finish1627+155#19239#19084
TOTALS31051154+1951
📊

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