Boston Marathon logo
BOSTON MARATHON 2023

Nicholas Heath

Bib: 26811•M

NH

0:00
0:00
/ mi
Be the first to cheer!
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
10:06/mi
31:23
↑ 97↓ 3451.5%
10K· 6.21 mi
10:09/mi
1:02:56
↑ 79↓ 1380.4%
15K· 9.32 mi
9:58/mi
1:33:54
↑ 67↓ 78
20K· 12.43 mi
10:01/mi
2:05:01
↑ 106↓ 860.1%
Half· 13.11 mi
9:52/mi
2:11:45
↑ 19↓ 370.5%
25K· 15.53 mi
10:23/mi
2:36:56
↑ 66↓ 880.2%
30K· 18.64 mi
10:28/mi
3:09:27
↑ 181↓ 1480.2%
20M
11:09/mi
3:24:36
↑ 64↓ 500.2%
21M
11:19/mi
3:35:55
↑ 106↓ 241.6%
35K· 21.75 mi
10:38/mi
3:43:52
↑ 17↓ 861.7%
23M
10:20/mi
3:56:48
↑ 23↓ 630.6%
24M
10:28/mi
4:07:16
↓ 821.3%
40K· 24.85 mi
10:40/mi
4:16:23
↓ 200.3%
25.2M
11:24/mi
4:20:19
↑ 13↓ 160.2%
Finish· 26.22 mi
8:57/mi
4:29:26
↑ 22↓ 21

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:11:45
Pace10:03 /mi
2nd Half
Distance13.11 mi
Time2:17:41
Pace10:30 /mi
📊Positive Split: 4.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:53:0731:2310:0631:23
10:06
-
10K
6.21 mi12:24:401:02:5610:0831:33
10:09
+0:03
15K
9.32 mi12:55:381:33:5410:0430:58
9:58
-0:11
20K
12.43 mi13:26:452:05:0110:0431:07
10:01
+0:03
Half
13.11 mi13:33:292:11:4510:036:44
9:52
-0:09
25K
15.53 mi13:58:402:36:5610:0625:11
10:23
+0:31
30K
18.64 mi14:31:113:09:2710:1032:31
10:28
+0:05
20M
20.00 mi14:46:203:24:3610:1415:09
11:09
+0:41
21M
21.00 mi14:57:393:35:5510:1711:19
11:19
+0:10
35K
21.75 mi15:05:363:43:5210:187:57
10:38
-0:41
23M
23.00 mi15:18:323:56:4810:1812:56
10:20
-0:18
24M
24.00 mi15:29:004:07:1610:1810:28
10:28
+0:08
40K
24.85 mi15:38:074:16:2310:199:07
10:40
+0:12
25.2M
25.20 mi15:42:034:20:1910:203:56
11:24
+0:44
Finish
26.22 mi15:51:104:29:2610:179:07
8:57
-2:27

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

8:57 /mi

Average Pace

10:17 /mi

Slowest Pace

11:24 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:17:56

29% of race

Time at Steady Pace

2:41:06

60% of race

Time at Slower Pace

30:24

11% of race

Average Pace: 10:17 /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 mi11:53:0731:2310:0631:23
10:06
#23683
10K
6.21 mi12:24:401:02:5610:0831:33
10:09
#23905
15K
9.32 mi12:55:381:33:5410:0430:58
9:58
#23750
20K
12.43 mi13:26:452:05:0110:0431:07
10:01
#23552
Half
13.11 mi13:33:292:11:4510:036:44
9:52
#23515
25K
15.53 mi13:58:402:36:5610:0625:11
10:23
#23425
30K
18.64 mi14:31:113:09:2710:1032:31
10:28
#23174
20M
20.00 mi14:46:203:24:3610:1415:09
11:09
#23147
21M
21.00 mi14:57:393:35:5510:1711:19
11:19
#23056
35K
21.75 mi15:05:363:43:5210:187:57
10:38
#23041
23M
23.00 mi15:18:323:56:4810:1812:56
10:20
#22909
24M
24.00 mi15:29:004:07:1610:1810:28
10:28
#22856
40K
24.85 mi15:38:074:16:2310:199:07
10:40
#22813
25.2M
25.20 mi15:42:034:20:1910:203:56
11:24
#22797
Finish
26.22 mi15:51:104:29:2610:179:07
8:57
#22688
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi23683139191391923444(Top 88%)13844(Top 91%)13844(Top 262%)
10K6.21 mi3.10 mi23905-22214042-12314042-12324027(Top 90%)14103(Top 93%)14103(Top 267%)
15K9.32 mi3.11 mi23750+15513978+6413978+6423444(Top 88%)13844(Top 91%)13844(Top 262%)
20K12.43 mi3.11 mi23552+19813896+8213896+8222950(Top 86%)13595(Top 90%)13595(Top 257%)
Half13.11 mi0.68 mi23515+3713879+1713879+1723011(Top 86%)13633(Top 90%)13633(Top 258%)
25K15.53 mi2.42 mi23425+9013821+5813821+5822986(Top 86%)13582(Top 89%)13582(Top 257%)
30K18.64 mi3.11 mi23174+25113679+14213679+14222138(Top 83%)13142(Top 87%)13142(Top 249%)
20M20.00 mi1.36 mi23147+2713655+2413655+2422937(Top 86%)13441(Top 89%)13441(Top 254%)
21M21.00 mi1.00 mi23056+9113601+5413601+5421515(Top 81%)12752(Top 84%)12752(Top 241%)
35K21.75 mi0.75 mi23041+1513587+1413587+1422617(Top 85%)13214(Top 87%)13214(Top 250%)
23M23.00 mi1.25 mi22909+13213507+8013507+8020893(Top 78%)12415(Top 82%)12415(Top 235%)
24M24.00 mi1.00 mi22856+5313470+3713470+3721964(Top 83%)12864(Top 85%)12864(Top 243%)
40K24.85 mi0.85 mi22813+4313448+2213448+2221620(Top 81%)12650(Top 83%)12650(Top 239%)
25.2M25.20 mi0.35 mi22797+1613441+713441+721342(Top 80%)12549(Top 83%)12549(Top 237%)
Finish26.22 mi1.02 mi22688+10913382+5913382+5917704(Top 67%)10935(Top 72%)10935(Top 207%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 88%
×21story building
+97ft-345ft

Overall

23444

Males

13844

M18-39

13844

5K→10K

3.1 - 6.2 mi

Top 90%
×5story building
+79ft-138ft

Overall

24027

Males

14103

M18-39

14103

10K→15K

6.2 - 9.3 mi

Top 88%
×3story building
+67ft-78ft

Overall

23444

Males

13844

M18-39

13844

15K→20K

9.3 - 12.4 mi

Top 86%
×5story building
+106ft-86ft

Overall

22950

Males

13595

M18-39

13595

20K→Half

12.4 - 13.1 mi

Top 86%
×2story building
+19ft-37ft

Overall

23011

Males

13633

M18-39

13633

Half→25K

13.1 - 15.5 mi

Top 86%
×4story building
+66ft-88ft

Overall

22986

Males

13582

M18-39

13582

25K→30K

15.5 - 18.6 mi

Top 83%
×9story building
+181ft-148ft

Overall

22138

Males

13142

M18-39

13142

30K→20M

18.6 - 20.0 mi

Top 86%
×5story building
+64ft-50ft

Overall

22937

Males

13441

M18-39

13441

20M→21M

20.0 - 21.0 mi

Top 81%
×8story building
+106ft-24ft

Overall

21515

Males

12752

M18-39

12752

21M→35K

21.0 - 21.8 mi

Top 85%
×7story building
+17ft-86ft

Overall

22617

Males

13214

M18-39

13214

35K→23M

21.8 - 23.0 mi

Top 78%
×5story building
+23ft-63ft

Overall

20893

Males

12415

M18-39

12415

23M→24M

23.0 - 24.0 mi

Top 83%
×6story building
+12ft-82ft

Overall

21964

Males

12864

M18-39

12864

24M→40K

24.0 - 24.9 mi

Top 81%
×1story
+6ft-20ft

Overall

21620

Males

12650

M18-39

12650

40K→25.2M

24.9 - 25.2 mi

Top 80%
×1story
+13ft-16ft

Overall

21342

Males

12549

M18-39

12549

25.2M→Finish

25.2 - 26.2 mi

Top 67%
×2story building
+22ft-21ft

Overall

17704

Males

10935

M18-39

10935

Passing Analysis

Category:
Athletes Passed
1574
Passed By
579
Net Change
+995
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23683
5K → 10K99321-222#23683#23905
10K → 15K20348+155#23905#23750
15K → 20K22830+198#23750#23552
20K → Half4811+37#23552#23515
Half → 25K13949+90#23515#23425
25K → 30K27120+251#23425#23174
30K → 20M6437+27#23174#23147
20M → 21M10211+91#23147#23056
21M → 35K3217+15#23056#23041
35K → 23M1353+132#23041#22909
23M → 24M6411+53#22909#22856
24M → 40K5916+43#22856#22813
40K → 25.2M215+16#22813#22797
25.2M → Finish1090+109#22797#22688
TOTALS1574579+995
📊

Passing Visuals

Category:
Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing