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BOSTON MARATHON 2023

James Niedens

Bib: 3611•M

UT

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Division (M18-39)
#0 / 5285
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
7:03/mi
21:54
↑ 97↓ 3451.5%
10K· 6.21 mi
7:02/mi
43:46
↑ 79↓ 1380.4%
15K· 9.32 mi
7:24/mi
1:06:44
↑ 67↓ 78
20K· 12.43 mi
8:13/mi
1:32:17
↑ 106↓ 860.1%
Half· 13.11 mi
8:12/mi
1:37:53
↑ 19↓ 370.5%
25K· 15.53 mi
8:50/mi
1:59:17
↑ 66↓ 880.2%
30K· 18.64 mi
9:38/mi
2:29:14
↑ 181↓ 1480.2%
20M
10:16/mi
2:43:11
↑ 64↓ 500.2%
21M
12:11/mi
2:55:22
↑ 106↓ 241.6%
35K· 21.75 mi
10:51/mi
3:03:29
↑ 17↓ 861.7%
23M
9:08/mi
3:14:55
↑ 23↓ 630.6%
24M
8:54/mi
3:23:49
↓ 821.3%
40K· 24.85 mi
9:16/mi
3:31:44
↓ 200.3%
25.2M
10:12/mi
3:35:15
↑ 13↓ 160.2%
Finish· 26.22 mi
9:02/mi
3:44:27
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:37:53
Pace7:28 /mi
2nd Half
Distance13.11 mi
Time2:06:34
Pace9:39 /mi
📊Positive Split: 29.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:1921:547:0321:54
7:03
-
10K
6.21 mi10:45:1143:467:0321:52
7:02
-0:01
15K
9.32 mi11:08:091:06:447:1022:58
7:24
+0:22
20K
12.43 mi11:33:421:32:177:2625:33
8:13
+0:49
Half
13.11 mi11:39:181:37:537:285:36
8:12
-0:01
25K
15.53 mi12:00:421:59:177:4121:24
8:50
+0:38
30K
18.64 mi12:30:392:29:148:0029:57
9:38
+0:48
20M
20.00 mi12:44:362:43:118:1013:57
10:16
+0:38
21M
21.00 mi12:56:472:55:228:2112:11
12:11
+1:55
35K
21.75 mi13:04:543:03:298:268:07
10:51
-1:20
23M
23.00 mi13:16:203:14:558:2811:26
9:08
-1:43
24M
24.00 mi13:25:143:23:498:308:54
8:54
-0:14
40K
24.85 mi13:33:093:31:448:317:55
9:16
+0:22
25.2M
25.20 mi13:36:403:35:158:333:31
10:12
+0:56
Finish
26.22 mi13:45:523:44:278:349:12
9:02
-1:10

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

7:02 /mi

Average Pace

8:34 /mi

Slowest Pace

12:11 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:37:53

44% of race

Time at Steady Pace

1:28:48

40% of race

Time at Slower Pace

37:46

17% of race

Average Pace: 8:34 /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 mi10:23:1921:547:0321:54
7:03
#6561
10K
6.21 mi10:45:1143:467:0321:52
7:02
#6758
15K
9.32 mi11:08:091:06:447:1022:58
7:24
#7486
20K
12.43 mi11:33:421:32:177:2625:33
8:13
#9194
Half
13.11 mi11:39:181:37:537:285:36
8:12
#9567
25K
15.53 mi12:00:421:59:177:4121:24
8:50
#11135
30K
18.64 mi12:30:392:29:148:0029:57
9:38
#13341
20M
20.00 mi12:44:362:43:118:1013:57
10:16
#14278
21M
21.00 mi12:56:472:55:228:2112:11
12:11
#15214
35K
21.75 mi13:04:543:03:298:268:07
10:51
#15727
23M
23.00 mi13:16:203:14:558:2811:26
9:08
#15763
24M
24.00 mi13:25:143:23:498:308:54
8:54
#15830
40K
24.85 mi13:33:093:31:448:317:55
9:16
#15891
25.2M
25.20 mi13:36:403:35:158:333:31
10:12
#15930
Finish
26.22 mi13:45:523:44:278:349:12
9:02
#16036
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi6561593459349274(Top 35%)7722(Top 51%)7722(Top 146%)
10K6.21 mi3.10 mi6758-1976082-1486082-1487072(Top 27%)6293(Top 41%)6293(Top 119%)
15K9.32 mi3.11 mi7486-7286613-5316613-5319274(Top 35%)7722(Top 51%)7722(Top 146%)
20K12.43 mi3.11 mi9194-17087672-10597672-105915113(Top 57%)10316(Top 68%)10316(Top 195%)
Half13.11 mi0.68 mi9567-3737901-2297901-22915824(Top 59%)10612(Top 70%)10612(Top 201%)
25K15.53 mi2.42 mi11135-15688693-7928693-79218078(Top 68%)11459(Top 76%)11459(Top 217%)
30K18.64 mi3.11 mi13341-22069577-8849577-88419930(Top 75%)12181(Top 80%)12181(Top 230%)
20M20.00 mi1.36 mi14278-9379914-3379914-33721162(Top 79%)12638(Top 83%)12638(Top 239%)
21M21.00 mi1.00 mi15214-93610258-34410258-34423015(Top 86%)13427(Top 88%)13427(Top 254%)
35K21.75 mi0.75 mi15727-51310437-17910437-17923003(Top 86%)13384(Top 88%)13384(Top 253%)
23M23.00 mi1.25 mi15763-3610424+1310424+1316680(Top 63%)10532(Top 69%)10532(Top 199%)
24M24.00 mi1.00 mi15830-6710433-910433-916747(Top 63%)10502(Top 69%)10502(Top 199%)
40K24.85 mi0.85 mi15891-6110452-1910452-1917322(Top 65%)10718(Top 71%)10718(Top 203%)
25.2M25.20 mi0.35 mi15930-3910466-1410466-1418065(Top 68%)11048(Top 73%)11048(Top 209%)
Finish26.22 mi1.02 mi16036-10610504-3810504-3818087(Top 68%)11116(Top 73%)11116(Top 210%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 35%
×21story building
+97ft-345ft

Overall

9274

Males

7722

M18-39

7722

5K→10K

3.1 - 6.2 mi

Top 27%
×5story building
+79ft-138ft

Overall

7072

Males

6293

M18-39

6293

10K→15K

6.2 - 9.3 mi

Top 35%
×3story building
+67ft-78ft

Overall

9274

Males

7722

M18-39

7722

15K→20K

9.3 - 12.4 mi

Top 57%
×5story building
+106ft-86ft

Overall

15113

Males

10316

M18-39

10316

20K→Half

12.4 - 13.1 mi

Top 59%
×2story building
+19ft-37ft

Overall

15824

Males

10612

M18-39

10612

Half→25K

13.1 - 15.5 mi

Top 68%
×4story building
+66ft-88ft

Overall

18078

Males

11459

M18-39

11459

25K→30K

15.5 - 18.6 mi

Top 75%
×9story building
+181ft-148ft

Overall

19930

Males

12181

M18-39

12181

30K→20M

18.6 - 20.0 mi

Top 79%
×5story building
+64ft-50ft

Overall

21162

Males

12638

M18-39

12638

20M→21M

20.0 - 21.0 mi

Top 86%
×8story building
+106ft-24ft

Overall

23015

Males

13427

M18-39

13427

21M→35K

21.0 - 21.8 mi

Top 86%
×7story building
+17ft-86ft

Overall

23003

Males

13384

M18-39

13384

35K→23M

21.8 - 23.0 mi

Top 63%
×5story building
+23ft-63ft

Overall

16680

Males

10532

M18-39

10532

23M→24M

23.0 - 24.0 mi

Top 63%
×6story building
+12ft-82ft

Overall

16747

Males

10502

M18-39

10502

24M→40K

24.0 - 24.9 mi

Top 65%
×1story
+6ft-20ft

Overall

17322

Males

10718

M18-39

10718

40K→25.2M

24.9 - 25.2 mi

Top 68%
×1story
+13ft-16ft

Overall

18065

Males

11048

M18-39

11048

25.2M→Finish

25.2 - 26.2 mi

Top 68%
×2story building
+22ft-21ft

Overall

18087

Males

11116

M18-39

11116

Passing Analysis

Category:
Athletes Passed
374
Passed By
9847
Net Change
-9475
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6561
5K → 10K118315-197#6561#6758
10K → 15K10738-728#6758#7486
15K → 20K41712-1708#7486#9194
20K → Half0373-373#9194#9567
Half → 25K91575-1568#9567#11135
25K → 30K92215-2206#11135#13341
30K → 20M7944-937#13341#14278
20M → 21M4940-936#14278#15214
21M → 35K1514-513#15214#15727
35K → 23M67103-36#15727#15763
23M → 24M54121-67#15763#15830
24M → 40K42103-61#15830#15891
40K → 25.2M2059-39#15891#15930
25.2M → Finish29135-106#15930#16036
TOTALS3749847-9475
📊

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