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BOSTON MARATHON 2023

Mark De Lancey

Bib: 6219•M

CA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 22%
Gender (Male)
#0 / 15176
Top 35%
Division (M18-39)
#0 / 5285
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
6:58/mi
21:40
↑ 97↓ 3451.5%
10K· 6.21 mi
7:02/mi
43:30
↑ 79↓ 1380.4%
15K· 9.32 mi
7:06/mi
1:05:35
↑ 67↓ 78
20K· 12.43 mi
7:07/mi
1:27:43
↑ 106↓ 860.1%
Half· 13.11 mi
7:04/mi
1:32:32
↑ 19↓ 370.5%
25K· 15.53 mi
6:54/mi
1:49:16
↑ 66↓ 880.2%
30K· 18.64 mi
7:03/mi
2:11:11
↑ 181↓ 1480.2%
20M
7:28/mi
2:21:20
↑ 64↓ 500.2%
21M
7:46/mi
2:29:06
↑ 106↓ 241.6%
35K· 21.75 mi
7:02/mi
2:34:22
↑ 17↓ 861.7%
23M
7:25/mi
2:43:39
↑ 23↓ 630.6%
24M
7:23/mi
2:51:02
↓ 821.3%
40K· 24.85 mi
7:42/mi
2:57:37
↓ 200.3%
25.2M
8:10/mi
3:00:26
↑ 13↓ 160.2%
Finish· 26.22 mi
7:08/mi
3:07:42
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:32:32
Pace7:04 /mi
2nd Half
Distance13.11 mi
Time1:35:10
Pace7:16 /mi
📊Positive Split: 2.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:25:2621:406:5821:40
6:58
-
10K
6.21 mi10:47:1643:307:0021:50
7:02
+0:04
15K
9.32 mi11:09:211:05:357:0222:05
7:06
+0:04
20K
12.43 mi11:31:291:27:437:0322:08
7:07
+0:01
Half
13.11 mi11:36:181:32:327:044:49
7:04
-0:03
25K
15.53 mi11:53:021:49:167:0216:44
6:54
-0:10
30K
18.64 mi12:14:572:11:117:0221:55
7:03
+0:09
20M
20.00 mi12:25:062:21:207:0410:09
7:28
+0:25
21M
21.00 mi12:32:522:29:067:067:46
7:46
+0:18
35K
21.75 mi12:38:082:34:227:065:16
7:02
-0:44
23M
23.00 mi12:47:252:43:397:079:17
7:25
+0:23
24M
24.00 mi12:54:482:51:027:087:23
7:23
-0:02
40K
24.85 mi13:01:232:57:377:096:35
7:42
+0:19
25.2M
25.20 mi13:04:123:00:267:102:49
8:10
+0:28
Finish
26.22 mi13:11:283:07:427:107:16
7:08
-1:02

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

6:54 /mi

Average Pace

7:10 /mi

Slowest Pace

8:10 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:50:32

91% of race

Time at Steady Pace

14:21

8% of race

Time at Slower Pace

2:49

2% of race

Average Pace: 7:10 /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 mi10:25:2621:406:5821:40
6:58
#6094
10K
6.21 mi10:47:1643:307:0021:50
7:02
#6497
15K
9.32 mi11:09:211:05:357:0222:05
7:06
#6712
20K
12.43 mi11:31:291:27:437:0322:08
7:07
#6685
Half
13.11 mi11:36:181:32:327:044:49
7:04
#6696
25K
15.53 mi11:53:021:49:167:0216:44
6:54
#6411
30K
18.64 mi12:14:572:11:117:0221:55
7:03
#6042
20M
20.00 mi12:25:062:21:207:0410:09
7:28
#6037
21M
21.00 mi12:32:522:29:067:067:46
7:46
#5994
35K
21.75 mi12:38:082:34:227:065:16
7:02
#5941
23M
23.00 mi12:47:252:43:397:079:17
7:25
#5897
24M
24.00 mi12:54:482:51:027:087:23
7:23
#5883
40K
24.85 mi13:01:232:57:377:096:35
7:42
#5906
25.2M
25.20 mi13:04:123:00:267:102:49
8:10
#5918
Finish
26.22 mi13:11:283:07:427:107:16
7:08
#5864
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi6094556555657184(Top 27%)6370(Top 42%)6370(Top 121%)
10K6.21 mi3.10 mi6497-4035868-3035868-3036995(Top 26%)6235(Top 41%)6235(Top 118%)
15K9.32 mi3.11 mi6712-2156038-1706038-1707184(Top 27%)6370(Top 42%)6370(Top 121%)
20K12.43 mi3.11 mi6685+276002+366002+366664(Top 25%)5957(Top 39%)5957(Top 113%)
Half13.11 mi0.68 mi6696-116015-136015-136857(Top 26%)6114(Top 40%)6114(Top 116%)
25K15.53 mi2.42 mi6411+2855786+2295786+2294980(Top 19%)4609(Top 30%)4609(Top 87%)
30K18.64 mi3.11 mi6042+3695497+2895497+2894693(Top 18%)4334(Top 29%)4334(Top 82%)
20M20.00 mi1.36 mi6037+55478+195478+196564(Top 25%)5683(Top 37%)5683(Top 108%)
21M21.00 mi1.00 mi5994+435434+445434+445983(Top 22%)5181(Top 34%)5181(Top 98%)
35K21.75 mi0.75 mi5941+535385+495385+495555(Top 21%)4918(Top 32%)4918(Top 93%)
23M23.00 mi1.25 mi5897+445346+395346+395932(Top 22%)5139(Top 34%)5139(Top 97%)
24M24.00 mi1.00 mi5883+145318+285318+286900(Top 26%)5653(Top 37%)5653(Top 107%)
40K24.85 mi0.85 mi5906-235325-75325-77929(Top 30%)6192(Top 41%)6192(Top 117%)
25.2M25.20 mi0.35 mi5918-125329-45329-47415(Top 28%)5815(Top 38%)5815(Top 110%)
Finish26.22 mi1.02 mi5864+545282+475282+475973(Top 22%)4912(Top 32%)4912(Top 93%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 27%
×21story building
+97ft-345ft

Overall

7184

Males

6370

M18-39

6370

5K→10K

3.1 - 6.2 mi

Top 26%
×5story building
+79ft-138ft

Overall

6995

Males

6235

M18-39

6235

10K→15K

6.2 - 9.3 mi

Top 27%
×3story building
+67ft-78ft

Overall

7184

Males

6370

M18-39

6370

15K→20K

9.3 - 12.4 mi

Top 25%
×5story building
+106ft-86ft

Overall

6664

Males

5957

M18-39

5957

20K→Half

12.4 - 13.1 mi

Top 26%
×2story building
+19ft-37ft

Overall

6857

Males

6114

M18-39

6114

Half→25K

13.1 - 15.5 mi

Top 19%
×4story building
+66ft-88ft

Overall

4980

Males

4609

M18-39

4609

25K→30K

15.5 - 18.6 mi

Top 18%
×9story building
+181ft-148ft

Overall

4693

Males

4334

M18-39

4334

30K→20M

18.6 - 20.0 mi

Top 25%
×5story building
+64ft-50ft

Overall

6564

Males

5683

M18-39

5683

20M→21M

20.0 - 21.0 mi

Top 22%
×8story building
+106ft-24ft

Overall

5983

Males

5181

M18-39

5181

21M→35K

21.0 - 21.8 mi

Top 21%
×7story building
+17ft-86ft

Overall

5555

Males

4918

M18-39

4918

35K→23M

21.8 - 23.0 mi

Top 22%
×5story building
+23ft-63ft

Overall

5932

Males

5139

M18-39

5139

23M→24M

23.0 - 24.0 mi

Top 26%
×6story building
+12ft-82ft

Overall

6900

Males

5653

M18-39

5653

24M→40K

24.0 - 24.9 mi

Top 30%
×1story
+6ft-20ft

Overall

7929

Males

6192

M18-39

6192

40K→25.2M

24.9 - 25.2 mi

Top 28%
×1story
+13ft-16ft

Overall

7415

Males

5815

M18-39

5815

25.2M→Finish

25.2 - 26.2 mi

Top 22%
×2story building
+22ft-21ft

Overall

5973

Males

4912

M18-39

4912

Passing Analysis

Category:
Athletes Passed
1386
Passed By
1156
Net Change
+230
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6094
5K → 10K51454-403#6094#6497
10K → 15K46261-215#6497#6712
15K → 20K12295+27#6712#6685
20K → Half1728-11#6685#6696
Half → 25K2894+285#6696#6411
25K → 30K3756+369#6411#6042
30K → 20M6055+5#6042#6037
20M → 21M7431+43#6037#5994
21M → 35K6512+53#5994#5941
35K → 23M8339+44#5941#5897
23M → 24M6349+14#5897#5883
24M → 40K4265-23#5883#5906
40K → 25.2M1527-12#5906#5918
25.2M → Finish8430+54#5918#5864
TOTALS13861156+230
📊

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