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BOSTON MARATHON 2023

Theresa Delorenzo

Bib: 21516•F

NY

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F45-49)
#0 / 1817
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
8:42/mi
27:02
↑ 97↓ 3451.5%
10K· 6.21 mi
8:45/mi
54:14
↑ 79↓ 1380.4%
15K· 9.32 mi
8:49/mi
1:21:39
↑ 67↓ 78
20K· 12.43 mi
9:11/mi
1:50:11
↑ 106↓ 860.1%
Half· 13.11 mi
10:49/mi
1:57:34
↑ 19↓ 370.5%
25K· 15.53 mi
9:50/mi
2:21:25
↑ 66↓ 880.2%
30K· 18.64 mi
11:15/mi
2:56:22
↑ 181↓ 1480.2%
20M
11:18/mi
3:11:43
↑ 64↓ 500.2%
21M
15:01/mi
3:26:44
↑ 106↓ 241.6%
35K· 21.75 mi
11:00/mi
3:34:58
↑ 17↓ 861.7%
23M
13:00/mi
3:51:14
↑ 23↓ 630.6%
24M
10:59/mi
4:02:13
↓ 821.3%
40K· 24.85 mi
12:04/mi
4:12:32
↓ 200.3%
25.2M
10:52/mi
4:16:17
↑ 13↓ 160.2%
Finish· 26.22 mi
8:50/mi
4:25:17
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:57:34
Pace8:58 /mi
2nd Half
Distance13.11 mi
Time2:27:43
Pace11:16 /mi
📊Positive Split: 25.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:4827:028:4227:02
8:42
-
10K
6.21 mi11:47:0054:148:4427:12
8:45
+0:03
15K
9.32 mi12:14:251:21:398:4627:25
8:49
+0:04
20K
12.43 mi12:42:571:50:118:5228:32
9:11
+0:22
Half
13.11 mi12:50:201:57:348:587:23
10:49
+1:38
25K
15.53 mi13:14:112:21:259:0623:51
9:50
-0:59
30K
18.64 mi13:49:082:56:229:2834:57
11:15
+1:25
20M
20.00 mi14:04:293:11:439:3515:21
11:18
+0:03
21M
21.00 mi14:19:303:26:449:5115:01
15:01
+3:43
35K
21.75 mi14:27:443:34:589:538:14
11:00
-4:01
23M
23.00 mi14:44:003:51:1410:0316:16
13:00
+2:00
24M
24.00 mi14:54:594:02:1310:0610:59
10:59
-2:01
40K
24.85 mi15:05:184:12:3210:1010:19
12:04
+1:05
25.2M
25.20 mi15:09:034:16:1710:103:45
10:52
-1:12
Finish
26.22 mi15:18:034:25:1710:089:00
8:50
-2:02

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

8:42 /mi

Average Pace

10:08 /mi

Slowest Pace

15:01 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:23:02

54% of race

Time at Steady Pace

1:20:39

30% of race

Time at Slower Pace

41:36

16% of race

Average Pace: 10:07 /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 mi11:19:4827:028:4227:02
8:42
#18917
10K
6.21 mi11:47:0054:148:4427:12
8:45
#19300
15K
9.32 mi12:14:251:21:398:4627:25
8:49
#19403
20K
12.43 mi12:42:571:50:118:5228:32
9:11
#19681
Half
13.11 mi12:50:201:57:348:587:23
10:49
#20224
25K
15.53 mi13:14:112:21:259:0623:51
9:50
#20587
30K
18.64 mi13:49:082:56:229:2834:57
11:15
#21358
20M
20.00 mi14:04:293:11:439:3515:21
11:18
#21558
21M
21.00 mi14:19:303:26:449:5115:01
15:01
#22052
35K
21.75 mi14:27:443:34:589:538:14
11:00
#22096
23M
23.00 mi14:44:003:51:1410:0316:16
13:00
#22368
24M
24.00 mi14:54:594:02:1310:0610:59
10:59
#22412
40K
24.85 mi15:05:184:12:3210:1010:19
12:04
#22482
25.2M
25.20 mi15:09:034:16:1710:103:45
10:52
#22445
Finish
26.22 mi15:18:034:25:1710:089:00
8:50
#22324
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi189177154715419663(Top 74%)7486(Top 66%)7486(Top 412%)
10K6.21 mi3.10 mi19300-3837337-1837337-18319721(Top 74%)7529(Top 66%)7529(Top 414%)
15K9.32 mi3.11 mi19403-1037394-577394-5719663(Top 74%)7486(Top 66%)7486(Top 412%)
20K12.43 mi3.11 mi19681-2787535-1417535-14120516(Top 77%)7970(Top 70%)7970(Top 439%)
Half13.11 mi0.68 mi20224-5437841-3067841-30624702(Top 93%)10317(Top 90%)10317(Top 568%)
25K15.53 mi2.42 mi20587-3638029-1888029-18821838(Top 82%)8747(Top 77%)8747(Top 481%)
30K18.64 mi3.11 mi21358-7718483-4548483-45423497(Top 88%)9731(Top 85%)9731(Top 536%)
20M20.00 mi1.36 mi21558-2008598-1158598-11523176(Top 87%)9610(Top 84%)9610(Top 529%)
21M21.00 mi1.00 mi22052-4948891-2938891-29325732(Top 97%)10968(Top 96%)10968(Top 604%)
35K21.75 mi0.75 mi22096-448919-288919-2823322(Top 88%)9773(Top 86%)9773(Top 538%)
23M23.00 mi1.25 mi22368-2729080-1619080-16125074(Top 94%)10672(Top 93%)10672(Top 587%)
24M24.00 mi1.00 mi22412-449111-319111-3123025(Top 86%)9645(Top 84%)9645(Top 531%)
40K24.85 mi0.85 mi22482-709159-489159-4823977(Top 90%)10166(Top 89%)10166(Top 559%)
25.2M25.20 mi0.35 mi22445+379143+169143+1620207(Top 76%)8176(Top 72%)8176(Top 450%)
Finish26.22 mi1.02 mi22324+1219079+649079+6417228(Top 65%)6505(Top 57%)6505(Top 358%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 74%
×21story building
+97ft-345ft

Overall

19663

Females

7486

F45-49

7486

5K→10K

3.1 - 6.2 mi

Top 74%
×5story building
+79ft-138ft

Overall

19721

Females

7529

F45-49

7529

10K→15K

6.2 - 9.3 mi

Top 74%
×3story building
+67ft-78ft

Overall

19663

Females

7486

F45-49

7486

15K→20K

9.3 - 12.4 mi

Top 77%
×5story building
+106ft-86ft

Overall

20516

Females

7970

F45-49

7970

20K→Half

12.4 - 13.1 mi

Top 93%
×2story building
+19ft-37ft

Overall

24702

Females

10317

F45-49

10317

Half→25K

13.1 - 15.5 mi

Top 82%
×4story building
+66ft-88ft

Overall

21838

Females

8747

F45-49

8747

25K→30K

15.5 - 18.6 mi

Top 88%
×9story building
+181ft-148ft

Overall

23497

Females

9731

F45-49

9731

30K→20M

18.6 - 20.0 mi

Top 87%
×5story building
+64ft-50ft

Overall

23176

Females

9610

F45-49

9610

20M→21M

20.0 - 21.0 mi

Top 97%
×8story building
+106ft-24ft

Overall

25732

Females

10968

F45-49

10968

21M→35K

21.0 - 21.8 mi

Top 88%
×7story building
+17ft-86ft

Overall

23322

Females

9773

F45-49

9773

35K→23M

21.8 - 23.0 mi

Top 94%
×5story building
+23ft-63ft

Overall

25074

Females

10672

F45-49

10672

23M→24M

23.0 - 24.0 mi

Top 86%
×6story building
+12ft-82ft

Overall

23025

Females

9645

F45-49

9645

24M→40K

24.0 - 24.9 mi

Top 90%
×1story
+6ft-20ft

Overall

23977

Females

10166

F45-49

10166

40K→25.2M

24.9 - 25.2 mi

Top 76%
×1story
+13ft-16ft

Overall

20207

Females

8176

F45-49

8176

25.2M→Finish

25.2 - 26.2 mi

Top 65%
×2story building
+22ft-21ft

Overall

17228

Females

6505

F45-49

6505

Passing Analysis

Category:
Athletes Passed
713
Passed By
4120
Net Change
-3407
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18917
5K → 10K186569-383#18917#19300
10K → 15K146249-103#19300#19403
15K → 20K85363-278#19403#19681
20K → Half2545-543#19681#20224
Half → 25K27390-363#20224#20587
25K → 30K22793-771#20587#21358
30K → 20M26226-200#21358#21558
20M → 21M2496-494#21558#22052
21M → 35K1357-44#22052#22096
35K → 23M11283-272#22096#22368
23M → 24M2266-44#22368#22412
24M → 40K1181-70#22412#22482
40K → 25.2M392+37#22482#22445
25.2M → Finish1210+121#22445#22324
TOTALS7134120-3407
📊

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