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BOSTON MARATHON 2023

Lily Den Hartog

Bib: 17218•F

MN

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 46%
Gender (Female)
#0 / 11423
Top 28%
Division (F18-39)
#0 / 4884
Top 46%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:41
Rank: #13620
Start → 5K
7:57/mi
24:41 split
10K· 6.21 mi
49:11
Rank: #13706 (-86)
5K → 10K
7:53/mi
24:30 split
15K· 9.32 mi
1:13:36
Rank: #13548 (+158)
10K → 15K
7:52/mi
24:25 split
20K· 12.43 mi
1:38:12
Rank: #13338 (+210)
15K → 20K
7:55/mi
24:36 split
Half· 13.11 mi
1:43:36
Rank: #13342 (-4)
20K → Half
7:55/mi
5:24 split
25K· 15.53 mi
2:02:58
Rank: #13190 (+152)
Half → 25K
7:59/mi
19:22 split
30K· 18.64 mi
2:28:08
Rank: #12873 (+317)
25K → 30K
8:06/mi
25:10 split
20M
2:39:09
Rank: #12681 (+192)
30K → 20M
8:06/mi
11:01 split
21M
2:47:44
Rank: #12555 (+126)
20M → 21M
8:35/mi
8:35 split
35K· 21.75 mi
2:53:42
Rank: #12522 (+33)
21M → 35K
7:59/mi
5:58 split
23M
3:04:00
Rank: #12451 (+71)
35K → 23M
8:14/mi
10:18 split
24M
3:12:00
Rank: #12377 (+74)
23M → 24M
8:00/mi
8:00 split
40K· 24.85 mi
3:18:53
Rank: #12294 (+83)
24M → 40K
8:03/mi
6:53 split
25.2M
3:21:49
Rank: #12252 (+42)
40K → 25.2M
8:30/mi
2:56 split
Finish· 26.22 mi
3:29:43
Rank: #12168 (+84)
25.2M → Finish
7:45/mi
7:54 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:43:36
Pace7:54 /mi
2nd Half
Distance13.11 mi
Time1:46:07
Pace8:06 /mi
📊Positive Split: 2.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:2124:417:5724:41
7:57
-
10K
6.21 mi11:39:5149:117:5524:30
7:53
-0:04
15K
9.32 mi12:04:161:13:367:5424:25
7:52
-0:01
20K
12.43 mi12:28:521:38:127:5424:36
7:55
+0:03
Half
13.11 mi12:34:161:43:367:545:24
7:55
0:00
25K
15.53 mi12:53:382:02:587:5519:22
7:59
+0:04
30K
18.64 mi13:18:482:28:087:5725:10
8:06
+0:07
20M
20.00 mi13:29:492:39:097:5711:01
8:06
0:00
21M
21.00 mi13:38:242:47:447:598:35
8:35
+0:29
35K
21.75 mi13:44:222:53:427:595:58
7:59
-0:36
23M
23.00 mi13:54:403:04:008:0010:18
8:14
+0:15
24M
24.00 mi14:02:403:12:008:008:00
8:00
-0:14
40K
24.85 mi14:09:333:18:538:006:53
8:03
+0:03
25.2M
25.20 mi14:12:293:21:498:012:56
8:30
+0:27
Finish
26.22 mi14:20:233:29:438:007:54
7:45
-0:45

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

7:45 /mi

Average Pace

8:00 /mi

Slowest Pace

8:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:21:08

96% of race

Time at Steady Pace

8:35

4% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:00 /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 mi11:15:2124:417:5724:41
7:57
#13620
10K
6.21 mi11:39:5149:117:5524:30
7:53
#13706
15K
9.32 mi12:04:161:13:367:5424:25
7:52
#13548
20K
12.43 mi12:28:521:38:127:5424:36
7:55
#13338
Half
13.11 mi12:34:161:43:367:545:24
7:55
#13342
25K
15.53 mi12:53:382:02:587:5519:22
7:59
#13190
30K
18.64 mi13:18:482:28:087:5725:10
8:06
#12873
20M
20.00 mi13:29:492:39:097:5711:01
8:06
#12681
21M
21.00 mi13:38:242:47:447:598:35
8:35
#12555
35K
21.75 mi13:44:222:53:427:595:58
7:59
#12522
23M
23.00 mi13:54:403:04:008:0010:18
8:14
#12451
24M
24.00 mi14:02:403:12:008:008:00
8:00
#12377
40K
24.85 mi14:09:333:18:538:006:53
8:03
#12294
25.2M
25.20 mi14:12:293:21:498:012:56
8:30
#12252
Finish
26.22 mi14:20:233:29:438:007:54
7:45
#12168
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi136203794379413189(Top 50%)3596(Top 31%)3596(Top 74%)
10K6.21 mi3.10 mi13706-863867-733867-7313869(Top 52%)3961(Top 35%)3961(Top 81%)
15K9.32 mi3.11 mi13548+1583783+843783+8413189(Top 50%)3596(Top 31%)3596(Top 74%)
20K12.43 mi3.11 mi13338+2103685+983685+9812775(Top 48%)3424(Top 30%)3424(Top 70%)
Half13.11 mi0.68 mi13342-43690-53690-513711(Top 52%)3898(Top 34%)3898(Top 80%)
25K15.53 mi2.42 mi13190+1523606+843606+8412655(Top 48%)3447(Top 30%)3447(Top 71%)
30K18.64 mi3.11 mi12873+3173476+1303476+13011651(Top 44%)2994(Top 26%)2994(Top 61%)
20M20.00 mi1.36 mi12681+1923385+913385+9111101(Top 42%)2790(Top 24%)2790(Top 57%)
21M21.00 mi1.00 mi12555+1263328+573328+5710994(Top 41%)2867(Top 25%)2867(Top 59%)
35K21.75 mi0.75 mi12522+333326+23326+211974(Top 45%)3410(Top 30%)3410(Top 70%)
23M23.00 mi1.25 mi12451+713299+273299+2711392(Top 43%)3207(Top 28%)3207(Top 66%)
24M24.00 mi1.00 mi12377+743282+173282+1711262(Top 42%)3224(Top 28%)3224(Top 66%)
40K24.85 mi0.85 mi12294+833253+293253+2910409(Top 39%)2851(Top 25%)2851(Top 58%)
25.2M25.20 mi0.35 mi12252+423242+113242+119670(Top 36%)2553(Top 22%)2553(Top 52%)
Finish26.22 mi1.02 mi12168+843217+253217+2510354(Top 39%)2871(Top 25%)2871(Top 59%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 50%
×21story building
+97ft-345ft

Overall

13189

Females

3596

F18-39

3596

5K→10K

3.1 - 6.2 mi

Top 52%
×5story building
+79ft-138ft

Overall

13869

Females

3961

F18-39

3961

10K→15K

6.2 - 9.3 mi

Top 50%
×3story building
+67ft-78ft

Overall

13189

Females

3596

F18-39

3596

15K→20K

9.3 - 12.4 mi

Top 48%
×5story building
+106ft-86ft

Overall

12775

Females

3424

F18-39

3424

20K→Half

12.4 - 13.1 mi

Top 52%
×2story building
+19ft-37ft

Overall

13711

Females

3898

F18-39

3898

Half→25K

13.1 - 15.5 mi

Top 48%
×4story building
+66ft-88ft

Overall

12655

Females

3447

F18-39

3447

25K→30K

15.5 - 18.6 mi

Top 44%
×9story building
+181ft-148ft

Overall

11651

Females

2994

F18-39

2994

30K→20M

18.6 - 20.0 mi

Top 42%
×5story building
+64ft-50ft

Overall

11101

Females

2790

F18-39

2790

20M→21M

20.0 - 21.0 mi

Top 41%
×8story building
+106ft-24ft

Overall

10994

Females

2867

F18-39

2867

21M→35K

21.0 - 21.8 mi

Top 45%
×7story building
+17ft-86ft

Overall

11974

Females

3410

F18-39

3410

35K→23M

21.8 - 23.0 mi

Top 43%
×5story building
+23ft-63ft

Overall

11392

Females

3207

F18-39

3207

23M→24M

23.0 - 24.0 mi

Top 42%
×6story building
+12ft-82ft

Overall

11262

Females

3224

F18-39

3224

24M→40K

24.0 - 24.9 mi

Top 39%
×1story
+6ft-20ft

Overall

10409

Females

2851

F18-39

2851

40K→25.2M

24.9 - 25.2 mi

Top 36%
×1story
+13ft-16ft

Overall

9670

Females

2553

F18-39

2553

25.2M→Finish

25.2 - 26.2 mi

Top 39%
×2story building
+22ft-21ft

Overall

10354

Females

2871

F18-39

2871

Passing Analysis

Category:
Athletes Passed
2374
Passed By
922
Net Change
+1452
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13620
5K → 10K248334-86#13620#13706
10K → 15K269111+158#13706#13548
15K → 20K29383+210#13548#13338
20K → Half3135-4#13338#13342
Half → 25K21765+152#13342#13190
25K → 30K37154+317#13190#12873
30K → 20M21018+192#12873#12681
20M → 21M16438+126#12681#12555
21M → 35K6633+33#12555#12522
35K → 23M11948+71#12522#12451
23M → 24M9925+74#12451#12377
24M → 40K10522+83#12377#12294
40K → 25.2M5412+42#12294#12252
25.2M → Finish12844+84#12252#12168
TOTALS2374922+1452
📊

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