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BOSTON MARATHON 2023

Rob Gilchrist

Bib: 2947•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 9%
Gender (Male)
#0 / 15176
Top 16%
Masters (Masters Men)
#0 / 9891
Top 5%
Division (M45-49)
#0 / 2252
Top 6%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:43
Rank: #3367
Start → 5K
20:43 | 6:40/mi
10K· 6.21 mi
40:55
Rank: #3037 (+330)
5K → 10K
20:12 | 6:30/mi
15K· 9.32 mi
1:01:28
Rank: #3165 (-128)
10K → 15K
20:33 | 6:37/mi
20K· 12.43 mi
1:22:13
Rank: #3175 (-10)
15K → 20K
20:45 | 6:41/mi
Half· 13.11 mi
1:26:43
Rank: #3189 (-14)
20K → Half
4:30 | 6:36/mi
25K· 15.53 mi
1:42:57
Rank: #3183 (+6)
Half → 25K
16:14 | 6:42/mi
30K· 18.64 mi
2:04:08
Rank: #3106 (+77)
25K → 30K
21:11 | 6:49/mi
20M
2:13:38
Rank: #3157 (-51)
30K → 20M
9:30 | 6:59/mi
21M
2:20:37
Rank: #3064 (+93)
20M → 21M
6:59 | 6:59/mi
35K· 21.75 mi
2:25:14
Rank: #2935 (+129)
21M → 35K
4:37 | 6:10/mi
23M
2:33:37
Rank: #2841 (+94)
35K → 23M
8:23 | 6:42/mi
24M
2:39:53
Rank: #2714 (+127)
23M → 24M
6:16 | 6:16/mi
40K· 24.85 mi
2:45:31
Rank: #2657 (+57)
24M → 40K
5:38 | 6:36/mi
25.2M
2:47:48
Rank: #2595 (+62)
40K → 25.2M
2:17 | 6:36/mi
Finish· 26.22 mi
2:54:11
Rank: #2510 (+85)
25.2M → Finish
6:23 | 6:16/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:26:43
Pace6:37 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:27:28
Pace6:40 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:4020:436:4020:43
6:40
-
10K
6.21 mi10:41:5240:556:3520:12
6:30
-0:10
15K
9.32 mi11:02:251:01:286:3620:33
6:37
+0:07
20K
12.43 mi11:23:101:22:136:3720:45
6:41
+0:04
Half
13.11 mi11:27:401:26:436:374:30
6:36
-0:05
25K
15.53 mi11:43:541:42:576:3816:14
6:42
+0:06
30K
18.64 mi12:05:052:04:086:4021:11
6:49
+0:07
20M
20.00 mi12:14:352:13:386:419:30
6:59
+0:10
21M
21.00 mi12:21:342:20:376:426:59
6:59
0:00
35K
21.75 mi12:26:112:25:146:414:37
6:10
-0:49
23M
23.00 mi12:34:342:33:376:418:23
6:42
+0:32
24M
24.00 mi12:40:502:39:536:406:16
6:16
-0:26
40K
24.85 mi12:46:282:45:316:405:38
6:36
+0:20
25.2M
25.20 mi12:48:452:47:486:402:17
6:36
0:00
Finish
26.22 mi12:55:082:54:116:396:23
6:16
-0:20

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

6:10 /mi

Average Pace

6:39 /mi

Slowest Pace

6:59 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:16:31

78% of race

Time at Steady Pace

37:40

22% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:39 /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 mi10:21:4020:436:4020:43
6:40
#3367
10K
6.21 mi10:41:5240:556:3520:12
6:30
#3037
15K
9.32 mi11:02:251:01:286:3620:33
6:37
#3165
20K
12.43 mi11:23:101:22:136:3720:45
6:41
#3175
Half
13.11 mi11:27:401:26:436:374:30
6:36
#3189
25K
15.53 mi11:43:541:42:576:3816:14
6:42
#3183
30K
18.64 mi12:05:052:04:086:4021:11
6:49
#3106
20M
20.00 mi12:14:352:13:386:419:30
6:59
#3157
21M
21.00 mi12:21:342:20:376:426:59
6:59
#3064
35K
21.75 mi12:26:112:25:146:414:37
6:10
#2935
23M
23.00 mi12:34:342:33:376:418:23
6:42
#2841
24M
24.00 mi12:40:502:39:536:406:16
6:16
#2714
40K
24.85 mi12:46:282:45:316:405:38
6:36
#2657
25.2M
25.20 mi12:48:452:47:486:402:17
6:36
#2595
Finish
26.22 mi12:55:082:54:116:396:23
6:16
#2510
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi3367317431743387(Top 13%)3212(Top 21%)3212(Top 143%)
10K6.21 mi3.10 mi3037+3302892+2822892+2822793(Top 10%)2669(Top 18%)2669(Top 119%)
15K9.32 mi3.11 mi3165-1283014-1223014-1223387(Top 13%)3212(Top 21%)3212(Top 143%)
20K12.43 mi3.11 mi3175-103022-83022-83380(Top 13%)3203(Top 21%)3203(Top 142%)
Half13.11 mi0.68 mi3189-143036-143036-143338(Top 13%)3169(Top 21%)3169(Top 141%)
25K15.53 mi2.42 mi3183+63031+53031+53308(Top 12%)3140(Top 21%)3140(Top 139%)
30K18.64 mi3.11 mi3106+772957+742957+743096(Top 12%)2921(Top 19%)2921(Top 130%)
20M20.00 mi1.36 mi3157-513001-443001-443943(Top 15%)3659(Top 24%)3659(Top 162%)
21M21.00 mi1.00 mi3064+932910+912910+912115(Top 8%)1996(Top 13%)1996(Top 89%)
35K21.75 mi0.75 mi2935+1292796+1142796+1141187(Top 4%)1131(Top 7%)1131(Top 50%)
23M23.00 mi1.25 mi2841+942707+892707+892169(Top 8%)2049(Top 14%)2049(Top 91%)
24M24.00 mi1.00 mi2714+1272588+1192588+1191277(Top 5%)1211(Top 8%)1211(Top 54%)
40K24.85 mi0.85 mi2657+572535+532535+531913(Top 7%)1795(Top 12%)1795(Top 80%)
25.2M25.20 mi0.35 mi2595+622477+582477+58657(Top 2%)622(Top 4%)622(Top 28%)
Finish26.22 mi1.02 mi2510+852394+832394+831496(Top 6%)1415(Top 9%)1415(Top 63%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 13%
×21stories
+97ft-345ft

Overall

3387

Males

3212

M45-49

3212

5K→10K

3.1 - 6.2 mi

Top 10%
×5stories
+79ft-138ft

Overall

2793

Males

2669

M45-49

2669

10K→15K

6.2 - 9.3 mi

Top 13%
×3stories
+67ft-78ft

Overall

3387

Males

3212

M45-49

3212

15K→20K

9.3 - 12.4 mi

Top 13%
×5stories
+106ft-86ft

Overall

3380

Males

3203

M45-49

3203

20K→Half

12.4 - 13.1 mi

Top 13%
×2stories
+19ft-37ft

Overall

3338

Males

3169

M45-49

3169

Half→25K

13.1 - 15.5 mi

Top 12%
×4stories
+66ft-88ft

Overall

3308

Males

3140

M45-49

3140

25K→30K

15.5 - 18.6 mi

Top 12%
×9stories
+181ft-148ft

Overall

3096

Males

2921

M45-49

2921

30K→20M

18.6 - 20.0 mi

Top 15%
×5stories
+64ft-50ft

Overall

3943

Males

3659

M45-49

3659

20M→21M

20.0 - 21.0 mi

Top 8%
×8stories
+106ft-24ft

Overall

2115

Males

1996

M45-49

1996

21M→35K

21.0 - 21.8 mi

Top 4%
×7stories
+17ft-86ft

Overall

1187

Males

1131

M45-49

1131

35K→23M

21.8 - 23.0 mi

Top 8%
×5stories
+23ft-63ft

Overall

2169

Males

2049

M45-49

2049

23M→24M

23.0 - 24.0 mi

Top 5%
×6stories
+12ft-82ft

Overall

1277

Males

1211

M45-49

1211

24M→40K

24.0 - 24.9 mi

Top 7%
×1story
+6ft-20ft

Overall

1913

Males

1795

M45-49

1795

40K→25.2M

24.9 - 25.2 mi

Top 2%
×1story
+13ft-16ft

Overall

657

Males

622

M45-49

622

25.2M→Finish

25.2 - 26.2 mi

Top 6%
×2stories
+22ft-21ft

Overall

1496

Males

1415

M45-49

1415

Passing Analysis

Category:
Athletes Passed
1443
Passed By
586
Net Change
+857
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3367
5K → 10K37545+330#3367#3037
10K → 15K43171-128#3037#3165
15K → 20K90100-10#3165#3175
20K → Half1327-14#3175#3189
Half → 25K6357+6#3189#3183
25K → 30K13558+77#3183#3106
30K → 20M3182-51#3106#3157
20M → 21M10411+93#3157#3064
21M → 35K1301+129#3064#2935
35K → 23M10713+94#2935#2841
23M → 24M1281+127#2841#2714
24M → 40K7215+57#2714#2657
40K → 25.2M620+62#2657#2595
25.2M → Finish905+85#2595#2510
TOTALS1443586+857
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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