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BOSTON MARATHON 2023

David Chase

Bib: 5093•M

CA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 9%
Gender (Male)
#0 / 15176
Top 15%
Division (M18-39)
#0 / 5285
Top 34%
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
6:54/mi
21:26
↑ 97↓ 3451.5%
10K· 6.21 mi
6:46/mi
42:27
↑ 79↓ 1380.4%
15K· 9.32 mi
6:44/mi
1:03:21
↑ 67↓ 78
20K· 12.43 mi
6:40/mi
1:24:03
↑ 106↓ 860.1%
Half· 13.11 mi
6:33/mi
1:28:31
↑ 19↓ 370.5%
25K· 15.53 mi
6:40/mi
1:44:41
↑ 66↓ 880.2%
30K· 18.64 mi
6:44/mi
2:05:36
↑ 181↓ 1480.2%
20M
6:38/mi
2:14:37
↑ 64↓ 500.2%
21M
6:41/mi
2:21:18
↑ 106↓ 241.6%
35K· 21.75 mi
6:10/mi
2:25:55
↑ 17↓ 861.7%
23M
6:21/mi
2:33:52
↑ 23↓ 630.6%
24M
6:06/mi
2:39:58
↓ 821.3%
40K· 24.85 mi
6:11/mi
2:45:15
↓ 200.3%
25.2M
6:37/mi
2:47:32
↑ 13↓ 160.2%
Finish· 26.22 mi
5:58/mi
2:53:37
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:28:31
Pace6:45 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:25:06
Pace6:30 /mi
📊Negative Split: 3.9% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:5121:266:5421:26
6:54
-
10K
6.21 mi10:44:5242:276:5021:01
6:46
-0:08
15K
9.32 mi11:05:461:03:216:4820:54
6:44
-0:02
20K
12.43 mi11:26:281:24:036:4620:42
6:40
-0:04
Half
13.11 mi11:30:561:28:316:454:28
6:33
-0:07
25K
15.53 mi11:47:061:44:416:4416:10
6:40
+0:07
30K
18.64 mi12:08:012:05:366:4420:55
6:44
+0:04
20M
20.00 mi12:17:022:14:376:449:01
6:38
-0:06
21M
21.00 mi12:23:432:21:186:446:41
6:41
+0:03
35K
21.75 mi12:28:202:25:556:434:37
6:10
-0:31
23M
23.00 mi12:36:172:33:526:417:57
6:21
+0:11
24M
24.00 mi12:42:232:39:586:406:06
6:06
-0:15
40K
24.85 mi12:47:402:45:156:395:17
6:11
+0:05
25.2M
25.20 mi12:49:572:47:326:392:17
6:37
+0:26
Finish
26.22 mi12:56:022:53:376:386:05
5:58
-0:39

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

5:58 /mi

Average Pace

6:38 /mi

Slowest Pace

6:54 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

34:30

20% of race

Time at Steady Pace

2:19:07

80% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:37 /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 mi10:23:5121:266:5421:26
6:54
#5532
10K
6.21 mi10:44:5242:276:5021:01
6:46
#5221
15K
9.32 mi11:05:461:03:216:4820:54
6:44
#4968
20K
12.43 mi11:26:281:24:036:4620:42
6:40
#4477
Half
13.11 mi11:30:561:28:316:454:28
6:33
#4377
25K
15.53 mi11:47:061:44:416:4416:10
6:40
#4125
30K
18.64 mi12:08:012:05:366:4420:55
6:44
#3753
20M
20.00 mi12:17:022:14:376:449:01
6:38
#3543
21M
21.00 mi12:23:432:21:186:446:41
6:41
#3279
35K
21.75 mi12:28:202:25:556:434:37
6:10
#3147
23M
23.00 mi12:36:172:33:526:417:57
6:21
#2916
24M
24.00 mi12:42:232:39:586:406:06
6:06
#2731
40K
24.85 mi12:47:402:45:156:395:17
6:11
#2588
25.2M
25.20 mi12:49:572:47:326:392:17
6:37
#2527
Finish
26.22 mi12:56:022:53:376:386:05
5:58
#2390
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi5532509650964370(Top 16%)4089(Top 27%)4089(Top 77%)
10K6.21 mi3.10 mi5221+3114832+2644832+2644929(Top 19%)4568(Top 30%)4568(Top 86%)
15K9.32 mi3.11 mi4968+2534612+2204612+2204370(Top 16%)4089(Top 27%)4089(Top 77%)
20K12.43 mi3.11 mi4477+4914184+4284184+4283255(Top 12%)3089(Top 20%)3089(Top 58%)
Half13.11 mi0.68 mi4377+1004097+874097+873028(Top 11%)2893(Top 19%)2893(Top 55%)
25K15.53 mi2.42 mi4125+2523869+2283869+2283092(Top 12%)2947(Top 19%)2947(Top 56%)
30K18.64 mi3.11 mi3753+3723543+3263543+3262563(Top 10%)2437(Top 16%)2437(Top 46%)
20M20.00 mi1.36 mi3543+2103351+1923351+1922020(Top 8%)1925(Top 13%)1925(Top 36%)
21M21.00 mi1.00 mi3279+2643106+2453106+2451060(Top 4%)1011(Top 7%)1011(Top 19%)
35K21.75 mi0.75 mi3147+1322985+1212985+1211186(Top 4%)1130(Top 7%)1130(Top 21%)
23M23.00 mi1.25 mi2916+2312774+2112774+211971(Top 4%)924(Top 6%)924(Top 17%)
24M24.00 mi1.00 mi2731+1852603+1712603+171771(Top 3%)731(Top 5%)731(Top 14%)
40K24.85 mi0.85 mi2588+1432471+1322471+132637(Top 2%)602(Top 4%)602(Top 11%)
25.2M25.20 mi0.35 mi2527+612411+602411+60749(Top 3%)714(Top 5%)714(Top 14%)
Finish26.22 mi1.02 mi2390+1372282+1292282+129668(Top 3%)637(Top 4%)637(Top 12%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 16%
×21story building
+97ft-345ft

Overall

4370

Males

4089

M18-39

4089

5K→10K

3.1 - 6.2 mi

Top 19%
×5story building
+79ft-138ft

Overall

4929

Males

4568

M18-39

4568

10K→15K

6.2 - 9.3 mi

Top 16%
×3story building
+67ft-78ft

Overall

4370

Males

4089

M18-39

4089

15K→20K

9.3 - 12.4 mi

Top 12%
×5story building
+106ft-86ft

Overall

3255

Males

3089

M18-39

3089

20K→Half

12.4 - 13.1 mi

Top 11%
×2story building
+19ft-37ft

Overall

3028

Males

2893

M18-39

2893

Half→25K

13.1 - 15.5 mi

Top 12%
×4story building
+66ft-88ft

Overall

3092

Males

2947

M18-39

2947

25K→30K

15.5 - 18.6 mi

Top 10%
×9story building
+181ft-148ft

Overall

2563

Males

2437

M18-39

2437

30K→20M

18.6 - 20.0 mi

Top 8%
×5story building
+64ft-50ft

Overall

2020

Males

1925

M18-39

1925

20M→21M

20.0 - 21.0 mi

Top 4%
×8story building
+106ft-24ft

Overall

1060

Males

1011

M18-39

1011

21M→35K

21.0 - 21.8 mi

Top 4%
×7story building
+17ft-86ft

Overall

1186

Males

1130

M18-39

1130

35K→23M

21.8 - 23.0 mi

Top 4%
×5story building
+23ft-63ft

Overall

971

Males

924

M18-39

924

23M→24M

23.0 - 24.0 mi

Top 3%
×6story building
+12ft-82ft

Overall

771

Males

731

M18-39

731

24M→40K

24.0 - 24.9 mi

Top 2%
×1story
+6ft-20ft

Overall

637

Males

602

M18-39

602

40K→25.2M

24.9 - 25.2 mi

Top 3%
×1story
+13ft-16ft

Overall

749

Males

714

M18-39

714

25.2M→Finish

25.2 - 26.2 mi

Top 3%
×2story building
+22ft-21ft

Overall

668

Males

637

M18-39

637

Passing Analysis

Category:
Athletes Passed
3275
Passed By
133
Net Change
+3142
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5532
5K → 10K39786+311#5532#5221
10K → 15K28229+253#5221#4968
15K → 20K4921+491#4968#4477
20K → Half1000+100#4477#4377
Half → 25K2564+252#4377#4125
25K → 30K3764+372#4125#3753
30K → 20M2111+210#3753#3543
20M → 21M2640+264#3543#3279
21M → 35K1320+132#3279#3147
35K → 23M2310+231#3147#2916
23M → 24M1872+185#2916#2731
24M → 40K1463+143#2731#2588
40K → 25.2M610+61#2588#2527
25.2M → Finish1403+137#2527#2390
TOTALS3275133+3142
📊

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