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BOSTON MARATHON 2023

Nathan Osborne

Bib: 29850•M

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M40-44)
#0 / 2241
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
9:04/mi
28:09
↑ 97↓ 3451.5%
10K· 6.21 mi
8:57/mi
55:58
↑ 79↓ 1380.4%
15K· 9.32 mi
8:53/mi
1:23:35
↑ 67↓ 78
20K· 12.43 mi
8:57/mi
1:51:23
↑ 106↓ 860.1%
Half· 13.11 mi
8:55/mi
1:57:28
↑ 19↓ 370.5%
25K· 15.53 mi
9:04/mi
2:19:26
↑ 66↓ 880.2%
30K· 18.64 mi
9:16/mi
2:48:14
↑ 181↓ 1480.2%
20M
9:26/mi
3:01:03
↑ 64↓ 500.2%
21M
9:52/mi
3:10:55
↑ 106↓ 241.6%
35K· 21.75 mi
9:25/mi
3:17:58
↑ 17↓ 861.7%
23M
9:26/mi
3:29:47
↑ 23↓ 630.6%
24M
9:09/mi
3:38:56
↓ 821.3%
40K· 24.85 mi
8:51/mi
3:46:30
↓ 200.3%
25.2M
9:08/mi
3:49:39
↑ 13↓ 160.2%
Finish· 26.22 mi
8:52/mi
3:58:41
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:57:28
Pace8:58 /mi
2nd Half
Distance13.11 mi
Time2:01:13
Pace9:15 /mi
📊Positive Split: 3.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:52:1728:099:0428:09
9:04
-
10K
6.21 mi12:20:0655:589:0027:49
8:57
-0:07
15K
9.32 mi12:47:431:23:358:5827:37
8:53
-0:04
20K
12.43 mi13:15:311:51:238:5827:48
8:57
+0:04
Half
13.11 mi13:21:361:57:288:586:05
8:55
-0:02
25K
15.53 mi13:43:342:19:268:5921:58
9:04
+0:09
30K
18.64 mi14:12:222:48:149:0128:48
9:16
+0:12
20M
20.00 mi14:25:113:01:039:0312:49
9:26
+0:10
21M
21.00 mi14:35:033:10:559:059:52
9:52
+0:26
35K
21.75 mi14:42:063:17:589:067:03
9:25
-0:27
23M
23.00 mi14:53:553:29:479:0711:49
9:26
+0:01
24M
24.00 mi15:03:043:38:569:079:09
9:09
-0:17
40K
24.85 mi15:10:383:46:309:077:34
8:51
-0:18
25.2M
25.20 mi15:13:473:49:399:073:09
9:08
+0:17
Finish
26.22 mi15:22:493:58:419:079:02
8:52
-0:16

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

8:51 /mi

Average Pace

9:07 /mi

Slowest Pace

9:52 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:48:49

96% of race

Time at Steady Pace

9:52

4% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:06 /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 mi11:52:1728:099:0428:09
9:04
#20698
10K
6.21 mi12:20:0655:589:0027:49
8:57
#20675
15K
9.32 mi12:47:431:23:358:5827:37
8:53
#20419
20K
12.43 mi13:15:311:51:238:5827:48
8:57
#20169
Half
13.11 mi13:21:361:57:288:586:05
8:55
#20170
25K
15.53 mi13:43:342:19:268:5921:58
9:04
#20001
30K
18.64 mi14:12:222:48:149:0128:48
9:16
#19707
20M
20.00 mi14:25:113:01:039:0312:49
9:26
#19612
21M
21.00 mi14:35:033:10:559:059:52
9:52
#19470
35K
21.75 mi14:42:063:17:589:067:03
9:25
#19477
23M
23.00 mi14:53:553:29:479:0711:49
9:26
#19396
24M
24.00 mi15:03:043:38:569:079:09
9:09
#19331
40K
24.85 mi15:10:383:46:309:077:34
8:51
#19200
25.2M
25.20 mi15:13:473:49:399:073:09
9:08
#19118
Finish
26.22 mi15:22:493:58:419:079:02
8:52
#19073
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi20698124581245819977(Top 75%)12283(Top 81%)12283(Top 548%)
10K6.21 mi3.10 mi20675+2312520-6212520-6220691(Top 78%)12582(Top 83%)12582(Top 561%)
15K9.32 mi3.11 mi20419+25612427+9312427+9319977(Top 75%)12283(Top 81%)12283(Top 548%)
20K12.43 mi3.11 mi20169+25012338+8912338+8919447(Top 73%)12075(Top 80%)12075(Top 539%)
Half13.11 mi0.68 mi20170-112341-312341-320021(Top 75%)12315(Top 81%)12315(Top 550%)
25K15.53 mi2.42 mi20001+16912270+7112270+7119237(Top 72%)11946(Top 79%)11946(Top 533%)
30K18.64 mi3.11 mi19707+29412131+13912131+13918480(Top 69%)11553(Top 76%)11553(Top 516%)
20M20.00 mi1.36 mi19612+9512083+4812083+4818583(Top 70%)11493(Top 76%)11493(Top 513%)
21M21.00 mi1.00 mi19470+14212006+7712006+7717502(Top 66%)11003(Top 73%)11003(Top 491%)
35K21.75 mi0.75 mi19477-712008-212008-219607(Top 74%)11869(Top 78%)11869(Top 530%)
23M23.00 mi1.25 mi19396+8111973+3511973+3518057(Top 68%)11141(Top 73%)11141(Top 497%)
24M24.00 mi1.00 mi19331+6511938+3511938+3517850(Top 67%)11004(Top 73%)11004(Top 491%)
40K24.85 mi0.85 mi19200+13111865+7311865+7315349(Top 58%)9847(Top 65%)9847(Top 439%)
25.2M25.20 mi0.35 mi19118+8211826+3911826+3913269(Top 50%)8910(Top 59%)8910(Top 398%)
Finish26.22 mi1.02 mi19073+4511803+2311803+2317332(Top 65%)10763(Top 71%)10763(Top 480%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 75%
×21story building
+97ft-345ft

Overall

19977

Males

12283

M40-44

12283

5K→10K

3.1 - 6.2 mi

Top 78%
×5story building
+79ft-138ft

Overall

20691

Males

12582

M40-44

12582

10K→15K

6.2 - 9.3 mi

Top 75%
×3story building
+67ft-78ft

Overall

19977

Males

12283

M40-44

12283

15K→20K

9.3 - 12.4 mi

Top 73%
×5story building
+106ft-86ft

Overall

19447

Males

12075

M40-44

12075

20K→Half

12.4 - 13.1 mi

Top 75%
×2story building
+19ft-37ft

Overall

20021

Males

12315

M40-44

12315

Half→25K

13.1 - 15.5 mi

Top 72%
×4story building
+66ft-88ft

Overall

19237

Males

11946

M40-44

11946

25K→30K

15.5 - 18.6 mi

Top 69%
×9story building
+181ft-148ft

Overall

18480

Males

11553

M40-44

11553

30K→20M

18.6 - 20.0 mi

Top 70%
×5story building
+64ft-50ft

Overall

18583

Males

11493

M40-44

11493

20M→21M

20.0 - 21.0 mi

Top 66%
×8story building
+106ft-24ft

Overall

17502

Males

11003

M40-44

11003

21M→35K

21.0 - 21.8 mi

Top 74%
×7story building
+17ft-86ft

Overall

19607

Males

11869

M40-44

11869

35K→23M

21.8 - 23.0 mi

Top 68%
×5story building
+23ft-63ft

Overall

18057

Males

11141

M40-44

11141

23M→24M

23.0 - 24.0 mi

Top 67%
×6story building
+12ft-82ft

Overall

17850

Males

11004

M40-44

11004

24M→40K

24.0 - 24.9 mi

Top 58%
×1story
+6ft-20ft

Overall

15349

Males

9847

M40-44

9847

40K→25.2M

24.9 - 25.2 mi

Top 50%
×1story
+13ft-16ft

Overall

13269

Males

8910

M40-44

8910

25.2M→Finish

25.2 - 26.2 mi

Top 65%
×2story building
+22ft-21ft

Overall

17332

Males

10763

M40-44

10763

Passing Analysis

Category:
Athletes Passed
2349
Passed By
724
Net Change
+1625
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20698
5K → 10K316293+23#20698#20675
10K → 15K32367+256#20675#20419
15K → 20K31161+250#20419#20169
20K → Half2728-1#20169#20170
Half → 25K21748+169#20170#20001
25K → 30K33541+294#20001#19707
30K → 20M12328+95#19707#19612
20M → 21M15917+142#19612#19470
21M → 35K4451-7#19470#19477
35K → 23M11635+81#19477#19396
23M → 24M8924+65#19396#19331
24M → 40K1365+131#19331#19200
40K → 25.2M820+82#19200#19118
25.2M → Finish7126+45#19118#19073
TOTALS2349724+1625
📊

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