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BOSTON MARATHON 2023

Gijs Janssen

Bib: 1729•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 5%
Gender (Male)
#0 / 15176
Top 9%
Masters (Masters Men)
#0 / 9891
Top 2%
Division (M40-44)
#0 / 2241
Top 7%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
18:45
Rank: #755
Start → 5K
18:45 | 6:02/mi
10K· 6.21 mi
37:24
Rank: #777 (-22)
5K → 10K
18:39 | 6:00/mi
15K· 9.32 mi
56:17
Rank: #801 (-24)
10K → 15K
18:53 | 6:05/mi
20K· 12.43 mi
1:15:33
Rank: #850 (-49)
15K → 20K
19:16 | 6:12/mi
Half· 13.11 mi
1:19:45
Rank: #864 (-14)
20K → Half
4:12 | 6:09/mi
25K· 15.53 mi
1:35:02
Rank: #918 (-54)
Half → 25K
15:17 | 6:18/mi
30K· 18.64 mi
1:55:29
Rank: #1005 (-87)
25K → 30K
20:27 | 6:35/mi
20M
2:04:36
Rank: #1066 (-61)
30K → 20M
9:07 | 6:43/mi
21M
2:11:48
Rank: #1115 (-49)
20M → 21M
7:12 | 7:12/mi
35K· 21.75 mi
2:16:39
Rank: #1131 (-16)
21M → 35K
4:51 | 6:29/mi
23M
2:25:11
Rank: #1186 (-55)
35K → 23M
8:32 | 6:49/mi
24M
2:31:52
Rank: #1237 (-51)
23M → 24M
6:41 | 6:41/mi
40K· 24.85 mi
2:37:50
Rank: #1293 (-56)
24M → 40K
5:58 | 6:59/mi
25.2M
2:40:35
Rank: #1340 (-47)
40K → 25.2M
2:45 | 7:58/mi
Finish· 26.22 mi
2:47:52
Rank: #1460 (-120)
25.2M → Finish
7:17 | 7:09/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:19:45
Pace6:05 /mi
2nd Half
Distance13.11 mi
Time1:28:07
Pace6:43 /mi
📊Positive Split: 10.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:19:0318:456:0218:45
6:02
-
10K
6.21 mi10:37:4237:246:0118:39
6:00
-0:02
15K
9.32 mi10:56:3556:176:0218:53
6:05
+0:05
20K
12.43 mi11:15:511:15:336:0519:16
6:12
+0:07
Half
13.11 mi11:20:031:19:456:054:12
6:09
-0:03
25K
15.53 mi11:35:201:35:026:0715:17
6:18
+0:09
30K
18.64 mi11:55:471:55:296:1220:27
6:35
+0:17
20M
20.00 mi12:04:542:04:366:149:07
6:43
+0:08
21M
21.00 mi12:12:062:11:486:177:12
7:12
+0:29
35K
21.75 mi12:16:572:16:396:174:51
6:29
-0:43
23M
23.00 mi12:25:292:25:116:198:32
6:49
+0:20
24M
24.00 mi12:32:102:31:526:206:41
6:41
-0:08
40K
24.85 mi12:38:082:37:506:215:58
6:59
+0:18
25.2M
25.20 mi12:40:532:40:356:222:45
7:58
+0:59
Finish
26.22 mi12:48:102:47:526:247:17
7:09
-0:49

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

6:00 /mi

Average Pace

6:24 /mi

Slowest Pace

7:58 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:35:02

57% of race

Time at Steady Pace

49:38

30% of race

Time at Slower Pace

23:12

14% of race

Average Pace: 6:24 /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 mi10:19:0318:456:0218:45
6:02
#755
10K
6.21 mi10:37:4237:246:0118:39
6:00
#777
15K
9.32 mi10:56:3556:176:0218:53
6:05
#801
20K
12.43 mi11:15:511:15:336:0519:16
6:12
#850
Half
13.11 mi11:20:031:19:456:054:12
6:09
#864
25K
15.53 mi11:35:201:35:026:0715:17
6:18
#918
30K
18.64 mi11:55:471:55:296:1220:27
6:35
#1005
20M
20.00 mi12:04:542:04:366:149:07
6:43
#1066
21M
21.00 mi12:12:062:11:486:177:12
7:12
#1115
35K
21.75 mi12:16:572:16:396:174:51
6:29
#1131
23M
23.00 mi12:25:292:25:116:198:32
6:49
#1186
24M
24.00 mi12:32:102:31:526:206:41
6:41
#1237
40K
24.85 mi12:38:082:37:506:215:58
6:59
#1293
25.2M
25.20 mi12:40:532:40:356:222:45
7:58
#1340
Finish
26.22 mi12:48:102:47:526:247:17
7:09
#1460
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi755707707908(Top 3%)860(Top 6%)860(Top 38%)
10K6.21 mi3.10 mi777-22732-25732-25804(Top 3%)758(Top 5%)758(Top 34%)
15K9.32 mi3.11 mi801-24756-24756-24908(Top 3%)860(Top 6%)860(Top 38%)
20K12.43 mi3.11 mi850-49803-47803-471054(Top 4%)1004(Top 7%)1004(Top 45%)
Half13.11 mi0.68 mi864-14817-14817-141209(Top 5%)1158(Top 8%)1158(Top 52%)
25K15.53 mi2.42 mi918-54870-53870-531356(Top 5%)1296(Top 9%)1296(Top 58%)
30K18.64 mi3.11 mi1005-87955-85955-851876(Top 7%)1795(Top 12%)1795(Top 80%)
20M20.00 mi1.36 mi1066-611015-601015-602292(Top 9%)2175(Top 14%)2175(Top 97%)
21M21.00 mi1.00 mi1115-491062-471062-473053(Top 11%)2857(Top 19%)2857(Top 127%)
35K21.75 mi0.75 mi1131-161078-161078-162292(Top 9%)2172(Top 14%)2172(Top 97%)
23M23.00 mi1.25 mi1186-551133-551133-552712(Top 10%)2538(Top 17%)2538(Top 113%)
24M24.00 mi1.00 mi1237-511180-471180-472978(Top 11%)2762(Top 18%)2762(Top 123%)
40K24.85 mi0.85 mi1293-561232-521232-523683(Top 14%)3324(Top 22%)3324(Top 148%)
25.2M25.20 mi0.35 mi1340-471276-441276-446216(Top 23%)5052(Top 33%)5052(Top 225%)
Finish26.22 mi1.02 mi1460-1201393-1171393-1176046(Top 23%)4953(Top 33%)4953(Top 221%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 3%
×21stories
+97ft-345ft

Overall

908

Males

860

M40-44

860

5K→10K

3.1 - 6.2 mi

Top 3%
×5stories
+79ft-138ft

Overall

804

Males

758

M40-44

758

10K→15K

6.2 - 9.3 mi

Top 3%
×3stories
+67ft-78ft

Overall

908

Males

860

M40-44

860

15K→20K

9.3 - 12.4 mi

Top 4%
×5stories
+106ft-86ft

Overall

1054

Males

1004

M40-44

1004

20K→Half

12.4 - 13.1 mi

Top 5%
×2stories
+19ft-37ft

Overall

1209

Males

1158

M40-44

1158

Half→25K

13.1 - 15.5 mi

Top 5%
×4stories
+66ft-88ft

Overall

1356

Males

1296

M40-44

1296

25K→30K

15.5 - 18.6 mi

Top 7%
×9stories
+181ft-148ft

Overall

1876

Males

1795

M40-44

1795

30K→20M

18.6 - 20.0 mi

Top 9%
×5stories
+64ft-50ft

Overall

2292

Males

2175

M40-44

2175

20M→21M

20.0 - 21.0 mi

Top 11%
×8stories
+106ft-24ft

Overall

3053

Males

2857

M40-44

2857

21M→35K

21.0 - 21.8 mi

Top 9%
×7stories
+17ft-86ft

Overall

2292

Males

2172

M40-44

2172

35K→23M

21.8 - 23.0 mi

Top 10%
×5stories
+23ft-63ft

Overall

2712

Males

2538

M40-44

2538

23M→24M

23.0 - 24.0 mi

Top 11%
×6stories
+12ft-82ft

Overall

2978

Males

2762

M40-44

2762

24M→40K

24.0 - 24.9 mi

Top 14%
×1story
+6ft-20ft

Overall

3683

Males

3324

M40-44

3324

40K→25.2M

24.9 - 25.2 mi

Top 23%
×1story
+13ft-16ft

Overall

6216

Males

5052

M40-44

5052

25.2M→Finish

25.2 - 26.2 mi

Top 23%
×2stories
+22ft-21ft

Overall

6046

Males

4953

M40-44

4953

Passing Analysis

Category:
Athletes Passed
129
Passed By
834
Net Change
-705
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#755
5K → 10K2951-22#755#777
10K → 15K1034-24#777#801
15K → 20K1564-49#801#850
20K → Half014-14#850#864
Half → 25K1266-54#864#918
25K → 30K14101-87#918#1005
30K → 20M667-61#1005#1066
20M → 21M857-49#1066#1115
21M → 35K622-16#1115#1131
35K → 23M1267-55#1131#1186
23M → 24M758-51#1186#1237
24M → 40K460-56#1237#1293
40K → 25.2M350-47#1293#1340
25.2M → Finish3123-120#1340#1460
TOTALS129834-705
📊

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