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BOSTON MARATHON 2023

Dave Dicerbo

Bib: 4345•M

NJ

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 7%
Gender (Male)
#0 / 15176
Top 12%
Masters (Masters Men)
#0 / 9891
Top 4%
Division (M40-44)
#0 / 2241
Top 11%
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
6:34/mi
20:23
↑ 97↓ 3451.5%
10K· 6.21 mi
6:24/mi
40:15
↑ 79↓ 1380.4%
15K· 9.32 mi
6:28/mi
1:00:20
↑ 67↓ 78
20K· 12.43 mi
6:34/mi
1:20:45
↑ 106↓ 860.1%
Half· 13.11 mi
6:23/mi
1:25:06
↑ 19↓ 370.5%
25K· 15.53 mi
6:32/mi
1:40:56
↑ 66↓ 880.2%
30K· 18.64 mi
6:32/mi
2:01:14
↑ 181↓ 1480.2%
20M
6:33/mi
2:10:08
↑ 64↓ 500.2%
21M
6:36/mi
2:16:44
↑ 106↓ 241.6%
35K· 21.75 mi
6:36/mi
2:21:40
↑ 17↓ 861.7%
23M
6:42/mi
2:30:03
↑ 23↓ 630.6%
24M
6:23/mi
2:36:26
↓ 821.3%
40K· 24.85 mi
6:35/mi
2:42:04
↓ 200.3%
25.2M
7:06/mi
2:44:31
↑ 13↓ 160.2%
Finish· 26.22 mi
6:23/mi
2:51:01
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:25:06
Pace6:29 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:25:55
Pace6:33 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:2820:236:3420:23
6:34
-
10K
6.21 mi10:42:2040:156:2919:52
6:24
-0:10
15K
9.32 mi11:02:251:00:206:2820:05
6:28
+0:04
20K
12.43 mi11:22:501:20:456:3020:25
6:34
+0:06
Half
13.11 mi11:27:111:25:066:294:21
6:23
-0:11
25K
15.53 mi11:43:011:40:566:3015:50
6:32
+0:09
30K
18.64 mi12:03:192:01:146:3020:18
6:32
0:00
20M
20.00 mi12:12:132:10:086:308:54
6:33
+0:01
21M
21.00 mi12:18:492:16:446:316:36
6:36
+0:03
35K
21.75 mi12:23:452:21:406:314:56
6:36
0:00
23M
23.00 mi12:32:082:30:036:318:23
6:42
+0:06
24M
24.00 mi12:38:312:36:266:316:23
6:23
-0:19
40K
24.85 mi12:44:092:42:046:315:38
6:35
+0:12
25.2M
25.20 mi12:46:362:44:316:322:27
7:06
+0:31
Finish
26.22 mi12:53:062:51:016:326:30
6:23
-0:43

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

6:23 /mi

Average Pace

6:32 /mi

Slowest Pace

7:06 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:48:34

99% of race

Time at Steady Pace

2:27

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:31 /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 mi10:22:2820:236:3420:23
6:34
#2604
10K
6.21 mi10:42:2040:156:2919:52
6:24
#2369
15K
9.32 mi11:02:251:00:206:2820:05
6:28
#2398
20K
12.43 mi11:22:501:20:456:3020:25
6:34
#2434
Half
13.11 mi11:27:111:25:066:294:21
6:23
#2413
25K
15.53 mi11:43:011:40:566:3015:50
6:32
#2400
30K
18.64 mi12:03:192:01:146:3020:18
6:32
#2249
20M
20.00 mi12:12:132:10:086:308:54
6:33
#2179
21M
21.00 mi12:18:492:16:446:316:36
6:36
#2059
35K
21.75 mi12:23:452:21:406:314:56
6:36
#2074
23M
23.00 mi12:32:082:30:036:318:23
6:42
#2052
24M
24.00 mi12:38:312:36:266:316:23
6:23
#2013
40K
24.85 mi12:44:092:42:046:315:38
6:35
#1985
25.2M
25.20 mi12:46:362:44:316:322:27
7:06
#1974
Finish
26.22 mi12:53:062:51:016:326:30
6:23
#1942
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi2604248124812423(Top 9%)2324(Top 15%)2324(Top 104%)
10K6.21 mi3.10 mi2369+2352261+2202261+2202216(Top 8%)2122(Top 14%)2122(Top 95%)
15K9.32 mi3.11 mi2398-292296-352296-352423(Top 9%)2324(Top 15%)2324(Top 104%)
20K12.43 mi3.11 mi2434-362332-362332-362663(Top 10%)2546(Top 17%)2546(Top 114%)
Half13.11 mi0.68 mi2413+212312+202312+202094(Top 8%)2010(Top 13%)2010(Top 90%)
25K15.53 mi2.42 mi2400+132300+122300+122318(Top 9%)2220(Top 15%)2220(Top 99%)
30K18.64 mi3.11 mi2249+1512157+1432157+1431699(Top 6%)1626(Top 11%)1626(Top 73%)
20M20.00 mi1.36 mi2179+702089+682089+681650(Top 6%)1574(Top 10%)1574(Top 70%)
21M21.00 mi1.00 mi2059+1201972+1171972+117846(Top 3%)800(Top 5%)800(Top 36%)
35K21.75 mi0.75 mi2074-151989-171989-173027(Top 11%)2829(Top 19%)2829(Top 126%)
23M23.00 mi1.25 mi2052+221968+211968+212152(Top 8%)2032(Top 13%)2032(Top 91%)
24M24.00 mi1.00 mi2013+391929+391929+391625(Top 6%)1538(Top 10%)1538(Top 69%)
40K24.85 mi0.85 mi1985+281901+281901+281868(Top 7%)1759(Top 12%)1759(Top 78%)
25.2M25.20 mi0.35 mi1974+111890+111890+112100(Top 8%)1956(Top 13%)1956(Top 87%)
Finish26.22 mi1.02 mi1942+321858+321858+321917(Top 7%)1788(Top 12%)1788(Top 80%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 9%
×21story building
+97ft-345ft

Overall

2423

Males

2324

M40-44

2324

5K→10K

3.1 - 6.2 mi

Top 8%
×5story building
+79ft-138ft

Overall

2216

Males

2122

M40-44

2122

10K→15K

6.2 - 9.3 mi

Top 9%
×3story building
+67ft-78ft

Overall

2423

Males

2324

M40-44

2324

15K→20K

9.3 - 12.4 mi

Top 10%
×5story building
+106ft-86ft

Overall

2663

Males

2546

M40-44

2546

20K→Half

12.4 - 13.1 mi

Top 8%
×2story building
+19ft-37ft

Overall

2094

Males

2010

M40-44

2010

Half→25K

13.1 - 15.5 mi

Top 9%
×4story building
+66ft-88ft

Overall

2318

Males

2220

M40-44

2220

25K→30K

15.5 - 18.6 mi

Top 6%
×9story building
+181ft-148ft

Overall

1699

Males

1626

M40-44

1626

30K→20M

18.6 - 20.0 mi

Top 6%
×5story building
+64ft-50ft

Overall

1650

Males

1574

M40-44

1574

20M→21M

20.0 - 21.0 mi

Top 3%
×8story building
+106ft-24ft

Overall

846

Males

800

M40-44

800

21M→35K

21.0 - 21.8 mi

Top 11%
×7story building
+17ft-86ft

Overall

3027

Males

2829

M40-44

2829

35K→23M

21.8 - 23.0 mi

Top 8%
×5story building
+23ft-63ft

Overall

2152

Males

2032

M40-44

2032

23M→24M

23.0 - 24.0 mi

Top 6%
×6story building
+12ft-82ft

Overall

1625

Males

1538

M40-44

1538

24M→40K

24.0 - 24.9 mi

Top 7%
×1story
+6ft-20ft

Overall

1868

Males

1759

M40-44

1759

40K→25.2M

24.9 - 25.2 mi

Top 8%
×1story
+13ft-16ft

Overall

2100

Males

1956

M40-44

1956

25.2M→Finish

25.2 - 26.2 mi

Top 7%
×2story building
+22ft-21ft

Overall

1917

Males

1788

M40-44

1788

Passing Analysis

Category:
Athletes Passed
1043
Passed By
381
Net Change
+662
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2604
5K → 10K28348+235#2604#2369
10K → 15K7099-29#2369#2398
15K → 20K4581-36#2398#2434
20K → Half254+21#2434#2413
Half → 25K5239+13#2413#2400
25K → 30K1609+151#2400#2249
30K → 20M744+70#2249#2179
20M → 21M1200+120#2179#2059
21M → 35K1429-15#2059#2074
35K → 23M4927+22#2074#2052
23M → 24M489+39#2052#2013
24M → 40K3911+28#2013#1985
40K → 25.2M187+11#1985#1974
25.2M → Finish4614+32#1974#1942
TOTALS1043381+662
📊

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