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BOSTON MARATHON 2023

David Walter

Bib: 283•M

MA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 0.3%
Gender (Male)
#0 / 15176
Top 0.5%
Division (M18-39)
#0 / 5285
Top 1%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K· 3.11 mi
16:33
Rank: #61
Start → 5K
16:33 | 5:20/mi
10K· 6.21 mi
32:58
Rank: #56 (+5)
5K → 10K
16:25 | 5:17/mi
15K· 9.32 mi
49:42
Rank: #55 (+1)
10K → 15K
16:44 | 5:23/mi
20K· 12.43 mi
1:06:32
Rank: #57 (-2)
15K → 20K
16:50 | 5:25/mi
Half· 13.11 mi
1:10:17
Rank: #57
20K → Half
3:45 | 5:30/mi
25K· 15.53 mi
1:23:50
Rank: #67 (-10)
Half → 25K
13:33 | 5:35/mi
30K· 18.64 mi
1:41:59
Rank: #81 (-14)
25K → 30K
18:09 | 5:51/mi
20M
1:49:54
Rank: #84 (-3)
30K → 20M
7:55 | 5:50/mi
21M
1:56:11
Rank: #89 (-5)
20M → 21M
6:17 | 6:17/mi
35K· 21.75 mi
2:00:23
Rank: #89
21M → 35K
4:12 | 5:37/mi
23M
2:07:44
Rank: #91 (-2)
35K → 23M
7:21 | 5:52/mi
24M
2:13:21
Rank: #90 (+1)
23M → 24M
5:37 | 5:37/mi
40K· 24.85 mi
2:18:18
Rank: #92 (-2)
24M → 40K
4:57 | 5:47/mi
25.2M
2:20:26
Rank: #89 (+3)
40K → 25.2M
2:08 | 6:11/mi
Finish· 26.22 mi
2:26:13
Rank: #88 (+1)
25.2M → Finish
5:47 | 5:41/mi

Course Map & Elevation

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:10:17
Pace5:22 /mi
2nd Half
Distance13.11 mi
Time1:15:56
Pace5:48 /mi
📊Positive Split: 8.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:16:3716:335:2016:33
5:20
-
10K
6.21 mi10:33:0232:585:1816:25
5:17
-0:03
15K
9.32 mi10:49:4649:425:2016:44
5:23
+0:06
20K
12.43 mi11:06:361:06:325:2116:50
5:25
+0:02
Half
13.11 mi11:10:211:10:175:223:45
5:30
+0:05
25K
15.53 mi11:23:541:23:505:2413:33
5:35
+0:05
30K
18.64 mi11:42:031:41:595:2818:09
5:51
+0:16
20M
20.00 mi11:49:581:49:545:307:55
5:50
-0:01
21M
21.00 mi11:56:151:56:115:326:17
6:17
+0:27
35K
21.75 mi12:00:272:00:235:324:12
5:37
-0:40
23M
23.00 mi12:07:482:07:445:337:21
5:52
+0:15
24M
24.00 mi12:13:252:13:215:335:37
5:37
-0:15
40K
24.85 mi12:18:222:18:185:344:57
5:47
+0:10
25.2M
25.20 mi12:20:302:20:265:342:08
6:11
+0:24
Finish
26.22 mi12:26:172:26:135:355:47
5:41
-0:30

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

5:17 /mi

Average Pace

5:35 /mi

Slowest Pace

6:17 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

1:44:23

71% of race

Time at Steady Pace

35:33

24% of race

Time at Slower Pace

6:17

4% of race

Average Pace: 5:35 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:16:3716:335:2016:33
5:20
#61
10K
6.21 mi10:33:0232:585:1816:25
5:17
#56
15K
9.32 mi10:49:4649:425:2016:44
5:23
#55
20K
12.43 mi11:06:361:06:325:2116:50
5:25
#57
Half
13.11 mi11:10:211:10:175:223:45
5:30
#57
25K
15.53 mi11:23:541:23:505:2413:33
5:35
#67
30K
18.64 mi11:42:031:41:595:2818:09
5:51
#81
20M
20.00 mi11:49:581:49:545:307:55
5:50
#84
21M
21.00 mi11:56:151:56:115:326:17
6:17
#89
35K
21.75 mi12:00:272:00:235:324:12
5:37
#89
23M
23.00 mi12:07:482:07:445:337:21
5:52
#91
24M
24.00 mi12:13:252:13:215:335:37
5:37
#90
40K
24.85 mi12:18:222:18:185:344:57
5:47
#92
25.2M
25.20 mi12:20:302:20:265:342:08
6:11
#89
Finish
26.22 mi12:26:172:26:135:355:47
5:41
#88
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi61616186(Top 0.3%)67(Top 0.4%)67(Top 1%)
10K6.21 mi3.10 mi56+556+556+553(Top 0.2%)53(Top 0.3%)53(Top 1%)
15K9.32 mi3.11 mi55+155+155+186(Top 0.3%)67(Top 0.4%)67(Top 1%)
20K12.43 mi3.11 mi57-257-257-268(Top 0.3%)65(Top 0.4%)65(Top 1%)
Half13.11 mi0.68 mi575757116(Top 0.4%)98(Top 0.6%)98(Top 2%)
25K15.53 mi2.42 mi67-1067-1067-10112(Top 0.4%)93(Top 0.6%)93(Top 2%)
30K18.64 mi3.11 mi81-1470-370-3187(Top 0.7%)164(Top 1%)164(Top 3%)
20M20.00 mi1.36 mi84-373-373-3176(Top 0.7%)154(Top 1%)154(Top 3%)
21M21.00 mi1.00 mi89-575-275-2319(Top 1%)292(Top 2%)292(Top 6%)
35K21.75 mi0.75 mi8974+174+1152(Top 0.6%)129(Top 0.9%)129(Top 2%)
23M23.00 mi1.25 mi91-275-175-1180(Top 0.7%)157(Top 1%)157(Top 3%)
24M24.00 mi1.00 mi90+173+273+2124(Top 0.5%)107(Top 0.7%)107(Top 2%)
40K24.85 mi0.85 mi92-275-275-2130(Top 0.5%)116(Top 0.8%)116(Top 2%)
25.2M25.20 mi0.35 mi89+372+372+3147(Top 0.6%)130(Top 0.9%)130(Top 2%)
Finish26.22 mi1.02 mi88+171+171+1207(Top 0.8%)190(Top 1%)190(Top 4%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 0.3%
×21stories
+97ft-345ft

Overall

86

Males

67

M18-39

67

5K→10K

3.1 - 6.2 mi

Top 0.2%
×5stories
+79ft-138ft

Overall

53

Males

53

M18-39

53

10K→15K

6.2 - 9.3 mi

Top 0.3%
×3stories
+67ft-78ft

Overall

86

Males

67

M18-39

67

15K→20K

9.3 - 12.4 mi

Top 0.3%
×5stories
+106ft-86ft

Overall

68

Males

65

M18-39

65

20K→Half

12.4 - 13.1 mi

Top 0.4%
×2stories
+19ft-37ft

Overall

116

Males

98

M18-39

98

Half→25K

13.1 - 15.5 mi

Top 0.4%
×4stories
+66ft-88ft

Overall

112

Males

93

M18-39

93

25K→30K

15.5 - 18.6 mi

Top 0.7%
×9stories
+181ft-148ft

Overall

187

Males

164

M18-39

164

30K→20M

18.6 - 20.0 mi

Top 0.7%
×5stories
+64ft-50ft

Overall

176

Males

154

M18-39

154

20M→21M

20.0 - 21.0 mi

Top 1%
×8stories
+106ft-24ft

Overall

319

Males

292

M18-39

292

21M→35K

21.0 - 21.8 mi

Top 0.6%
×7stories
+17ft-86ft

Overall

152

Males

129

M18-39

129

35K→23M

21.8 - 23.0 mi

Top 0.7%
×5stories
+23ft-63ft

Overall

180

Males

157

M18-39

157

23M→24M

23.0 - 24.0 mi

Top 0.5%
×6stories
+12ft-82ft

Overall

124

Males

107

M18-39

107

24M→40K

24.0 - 24.9 mi

Top 0.5%
×1story
+6ft-20ft

Overall

130

Males

116

M18-39

116

40K→25.2M

24.9 - 25.2 mi

Top 0.6%
×1story
+13ft-16ft

Overall

147

Males

130

M18-39

130

25.2M→Finish

25.2 - 26.2 mi

Top 0.8%
×2stories
+22ft-21ft

Overall

207

Males

190

M18-39

190

Passing Analysis

Category:
Athletes Passed
24
Passed By
51
Net Change
-27
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#61
5K → 10K50+5#61#56
10K → 15K21+1#56#55
15K → 20K35-2#55#57
20K → Half000#57#57
Half → 25K111-10#57#67
25K → 30K014-14#67#81
30K → 20M14-3#81#84
20M → 21M16-5#84#89
21M → 35K110#89#89
35K → 23M24-2#89#91
23M → 24M32+1#91#90
24M → 40K02-2#90#92
40K → 25.2M30+3#92#89
25.2M → Finish21+1#89#88
TOTALS2451-27
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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