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BOSTON MARATHON 2023

Marlena Del Hierro

Bib: 18988•F

NY

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 43%
Gender (Female)
#0 / 11423
Top 25%
Division (F18-39)
#0 / 4884
Top 42%
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
8:06/mi
25:10
↑ 97↓ 3451.5%
10K· 6.21 mi
7:53/mi
49:38
↑ 79↓ 1380.4%
15K· 9.32 mi
7:51/mi
1:14:02
↑ 67↓ 78
20K· 12.43 mi
7:50/mi
1:38:22
↑ 106↓ 860.1%
Half· 13.11 mi
7:48/mi
1:43:41
↑ 19↓ 370.5%
25K· 15.53 mi
7:52/mi
2:02:45
↑ 66↓ 880.2%
30K· 18.64 mi
8:01/mi
2:27:38
↑ 181↓ 1480.2%
20M
7:59/mi
2:38:29
↑ 64↓ 500.2%
21M
8:17/mi
2:46:46
↑ 106↓ 241.6%
35K· 21.75 mi
7:38/mi
2:52:29
↑ 17↓ 861.7%
23M
8:02/mi
3:02:32
↑ 23↓ 630.6%
24M
7:45/mi
3:10:17
↓ 821.3%
40K· 24.85 mi
7:51/mi
3:17:00
↓ 200.3%
25.2M
8:30/mi
3:19:56
↑ 13↓ 160.2%
Finish· 26.22 mi
7:37/mi
3:27:42
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:43:41
Pace7:55 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:44:01
Pace7:56 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:0225:108:0625:10
8:06
-
10K
6.21 mi11:44:3049:387:5924:28
7:53
-0:13
15K
9.32 mi12:08:541:14:027:5724:24
7:51
-0:02
20K
12.43 mi12:33:141:38:227:5524:20
7:50
-0:01
Half
13.11 mi12:38:331:43:417:555:19
7:48
-0:02
25K
15.53 mi12:57:372:02:457:5419:04
7:52
+0:04
30K
18.64 mi13:22:302:27:387:5524:53
8:01
+0:09
20M
20.00 mi13:33:212:38:297:5510:51
7:59
-0:02
21M
21.00 mi13:41:382:46:467:568:17
8:17
+0:18
35K
21.75 mi13:47:212:52:297:565:43
7:38
-0:39
23M
23.00 mi13:57:243:02:327:5610:03
8:02
+0:24
24M
24.00 mi14:05:093:10:177:567:45
7:45
-0:17
40K
24.85 mi14:11:523:17:007:566:43
7:51
+0:06
25.2M
25.20 mi14:14:483:19:567:562:56
8:30
+0:39
Finish
26.22 mi14:22:343:27:427:567:46
7:37
-0:53

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

7:37 /mi

Average Pace

7:56 /mi

Slowest Pace

8:30 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:24:46

99% of race

Time at Steady Pace

2:56

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:55 /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 mi11:20:0225:108:0625:10
8:06
#14715
10K
6.21 mi11:44:3049:387:5924:28
7:53
#14298
15K
9.32 mi12:08:541:14:027:5724:24
7:51
#13929
20K
12.43 mi12:33:141:38:227:5524:20
7:50
#13440
Half
13.11 mi12:38:331:43:417:555:19
7:48
#13387
25K
15.53 mi12:57:372:02:457:5419:04
7:52
#13057
30K
18.64 mi13:22:302:27:387:5524:53
8:01
#12636
20M
20.00 mi13:33:212:38:297:5510:51
7:59
#12415
21M
21.00 mi13:41:382:46:467:568:17
8:17
#12191
35K
21.75 mi13:47:212:52:297:565:43
7:38
#12085
23M
23.00 mi13:57:243:02:327:5610:03
8:02
#11942
24M
24.00 mi14:05:093:10:177:567:45
7:45
#11818
40K
24.85 mi14:11:523:17:007:566:43
7:51
#11696
25.2M
25.20 mi14:14:483:19:567:562:56
8:30
#11658
Finish
26.22 mi14:22:343:27:427:567:46
7:37
#11514
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi147154460446013147(Top 49%)3568(Top 31%)3568(Top 73%)
10K6.21 mi3.10 mi14298+4174224+2364224+23613771(Top 52%)3901(Top 34%)3901(Top 80%)
15K9.32 mi3.11 mi13929+3694017+2074017+20713147(Top 49%)3568(Top 31%)3568(Top 73%)
20K12.43 mi3.11 mi13440+4893744+2733744+27312016(Top 45%)2983(Top 26%)2983(Top 61%)
Half13.11 mi0.68 mi13387+533714+303714+3012685(Top 48%)3291(Top 29%)3291(Top 67%)
25K15.53 mi2.42 mi13057+3303527+1873527+18711655(Top 44%)2864(Top 25%)2864(Top 59%)
30K18.64 mi3.11 mi12636+4213339+1883339+18810992(Top 41%)2635(Top 23%)2635(Top 54%)
20M20.00 mi1.36 mi12415+2213220+1193220+11910186(Top 38%)2326(Top 20%)2326(Top 48%)
21M21.00 mi1.00 mi12191+2243115+1053115+1059174(Top 34%)2006(Top 18%)2006(Top 41%)
35K21.75 mi0.75 mi12085+1063078+373078+379613(Top 36%)2198(Top 19%)2198(Top 45%)
23M23.00 mi1.25 mi11942+1433024+543024+549968(Top 37%)2500(Top 22%)2500(Top 51%)
24M24.00 mi1.00 mi11818+1242962+622962+629463(Top 36%)2324(Top 20%)2324(Top 48%)
40K24.85 mi0.85 mi11696+1222919+432919+439089(Top 34%)2221(Top 19%)2221(Top 45%)
25.2M25.20 mi0.35 mi11658+382907+122907+129660(Top 36%)2543(Top 22%)2543(Top 52%)
Finish26.22 mi1.02 mi11514+1442860+472860+479455(Top 36%)2460(Top 22%)2460(Top 50%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 49%
×21story building
+97ft-345ft

Overall

13147

Females

3568

F18-39

3568

5K→10K

3.1 - 6.2 mi

Top 52%
×5story building
+79ft-138ft

Overall

13771

Females

3901

F18-39

3901

10K→15K

6.2 - 9.3 mi

Top 49%
×3story building
+67ft-78ft

Overall

13147

Females

3568

F18-39

3568

15K→20K

9.3 - 12.4 mi

Top 45%
×5story building
+106ft-86ft

Overall

12016

Females

2983

F18-39

2983

20K→Half

12.4 - 13.1 mi

Top 48%
×2story building
+19ft-37ft

Overall

12685

Females

3291

F18-39

3291

Half→25K

13.1 - 15.5 mi

Top 44%
×4story building
+66ft-88ft

Overall

11655

Females

2864

F18-39

2864

25K→30K

15.5 - 18.6 mi

Top 41%
×9story building
+181ft-148ft

Overall

10992

Females

2635

F18-39

2635

30K→20M

18.6 - 20.0 mi

Top 38%
×5story building
+64ft-50ft

Overall

10186

Females

2326

F18-39

2326

20M→21M

20.0 - 21.0 mi

Top 34%
×8story building
+106ft-24ft

Overall

9174

Females

2006

F18-39

2006

21M→35K

21.0 - 21.8 mi

Top 36%
×7story building
+17ft-86ft

Overall

9613

Females

2198

F18-39

2198

35K→23M

21.8 - 23.0 mi

Top 37%
×5story building
+23ft-63ft

Overall

9968

Females

2500

F18-39

2500

23M→24M

23.0 - 24.0 mi

Top 36%
×6story building
+12ft-82ft

Overall

9463

Females

2324

F18-39

2324

24M→40K

24.0 - 24.9 mi

Top 34%
×1story
+6ft-20ft

Overall

9089

Females

2221

F18-39

2221

40K→25.2M

24.9 - 25.2 mi

Top 36%
×1story
+13ft-16ft

Overall

9660

Females

2543

F18-39

2543

25.2M→Finish

25.2 - 26.2 mi

Top 36%
×2story building
+22ft-21ft

Overall

9455

Females

2460

F18-39

2460

Passing Analysis

Category:
Athletes Passed
3571
Passed By
370
Net Change
+3201
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14715
5K → 10K556139+417#14715#14298
10K → 15K42051+369#14298#13929
15K → 20K50415+489#13929#13440
20K → Half629+53#13440#13387
Half → 25K35323+330#13387#13057
25K → 30K43514+421#13057#12636
30K → 20M23918+221#12636#12415
20M → 21M23612+224#12415#12191
21M → 35K1126+106#12191#12085
35K → 23M16926+143#12085#11942
23M → 24M14016+124#11942#11818
24M → 40K13715+122#11818#11696
40K → 25.2M468+38#11696#11658
25.2M → Finish16218+144#11658#11514
TOTALS3571370+3201
📊

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