All Results|Race Analytics|Course|Contact
BOSTON MARATHON 2026

Lanse Natsch

Bib: 25414•M

NY

Boston Marathon logo
0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 29021
Gender (Male)
#0 / 16340
Masters (Masters Men)
#0 / 10617
Age Group (M65-69)
#0 / 774
Race Day Weather
51°/41°F
overcast clouds

Race Timeline and Course Information

Your journey through the course with elevation, pacing, and checkpoint details

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K
26:58
3.11 mi
Rank: #21077
Start → 5K
26:58 | 8:41/mi
10K
54:34
6.21 mi
Rank: #21739 (-662)
5K → 10K
27:36 | 8:54/mi
15K
1:22:21
9.32 mi
Rank: #21946 (-207)
10K → 15K
27:47 | 8:57/mi
20K
1:51:35
12.43 mi
Rank: #22388 (-442)
15K → 20K
29:14 | 9:25/mi
HALF
1:57:54
13.11 mi
Rank: #22463 (-75)
20K → HALF
6:19 | 9:17/mi
25K
2:20:57
15.53 mi
Rank: #22606 (-143)
HALF → 25K
23:03 | 9:31/mi
30K
2:51:45
18.64 mi
Rank: #22693 (-87)
25K → 30K
30:48 | 9:55/mi
20M
3:05:28
20.00 mi
Rank: #22684 (+9)
30K → 20M
13:43 | 10:06/mi
21M
3:16:14
21.00 mi
Rank: #22670 (+14)
20M → 21M
10:46 | 10:46/mi
35K
3:23:32
21.75 mi
Rank: #22665 (+5)
21M → 35K
7:18 | 9:46/mi
23M
3:36:06
23.00 mi
Rank: #22636 (+29)
35K → 23M
12:34 | 10:03/mi
24M
3:45:57
24.00 mi
Rank: #22620 (+16)
23M → 24M
9:51 | 9:51/mi
40K
3:54:36
24.85 mi
Rank: #22599 (+21)
24M → 40K
8:39 | 10:08/mi
25.2M
3:58:14
25.20 mi
Rank: #22570 (+29)
40K → 25.2M
3:38 | 10:33/mi
FINISH
4:08:32
26.22 mi
Rank: #22632 (-62)
25.2M → FINISH
10:18 | 10:07/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:57:54
Pace9:00 /mi
2nd Half
Distance13.11 mi
Time2:10:38
Pace9:58 /mi
📊Positive Split: 10.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:34:0526:588:4126:58
8:41
-
10K
6.21 mi12:01:4154:348:4727:36
8:54
+0:13
15K
9.32 mi12:29:281:22:218:5127:47
8:57
+0:03
20K
12.43 mi12:58:421:51:358:5929:14
9:25
+0:28
HALF
13.11 mi13:05:011:57:549:006:19
9:17
-0:08
25K
15.53 mi13:28:042:20:579:0523:03
9:31
+0:14
30K
18.64 mi13:58:522:51:459:1330:48
9:55
+0:24
20M
20.00 mi14:12:353:05:289:1713:43
10:06
+0:11
21M
21.00 mi14:23:213:16:149:2110:46
10:46
+0:40
35K
21.75 mi14:30:393:23:329:227:18
9:46
-1:00
23M
23.00 mi14:43:133:36:069:2412:34
10:03
+0:17
24M
24.00 mi14:53:043:45:579:259:51
9:51
-0:12
40K
24.85 mi15:01:433:54:369:278:39
10:08
+0:17
25.2M
25.20 mi15:05:213:58:149:283:38
10:33
+0:25
FINISH
26.22 mi15:15:394:08:329:3010:18
10:07
-0:26

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

📈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

8:41 /mi

Average Pace

9:29 /mi

Slowest Pace

10:46 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

2:20:57

57% of race

Time at Steady Pace

1:33:11

37% of race

Time at Slower Pace

14:24

6% of race

Average Pace: 9:29 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:34:0526:588:4126:58
8:41
#21077
10K
6.21 mi12:01:4154:348:4727:36
8:54
#21739
15K
9.32 mi12:29:281:22:218:5127:47
8:57
#21946
20K
12.43 mi12:58:421:51:358:5929:14
9:25
#22388
HALF
13.11 mi13:05:011:57:549:006:19
9:17
#22463
25K
15.53 mi13:28:042:20:579:0523:03
9:31
#22606
30K
18.64 mi13:58:522:51:459:1330:48
9:55
#22693
20M
20.00 mi14:12:353:05:289:1713:43
10:06
#22684
21M
21.00 mi14:23:213:16:149:2110:46
10:46
#22670
35K
21.75 mi14:30:393:23:329:227:18
9:46
#22665
23M
23.00 mi14:43:133:36:069:2412:34
10:03
#22636
24M
24.00 mi14:53:043:45:579:259:51
9:51
#22620
40K
24.85 mi15:01:433:54:369:278:39
10:08
#22599
25.2M
25.20 mi15:05:213:58:149:283:38
10:33
#22570
FINISH
26.22 mi15:15:394:08:329:3010:18
10:07
#22632
Faster pace
Steady pace
Slower pace

Rankings

Your position at each checkpoint and how you ranked in each segment

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM65-69Seg. OverallSeg. MalesSeg. M65-69
5K3.11 mi3.11 mi21077127761277622402(Top 77%)13482(Top 83%)13482(Top 1742%)
10K6.21 mi3.10 mi21739-66213107-33113107-33122328(Top 77%)13417(Top 82%)13417(Top 1733%)
15K9.32 mi3.11 mi21946-20713220-11313220-11322402(Top 77%)13482(Top 83%)13482(Top 1742%)
20K12.43 mi3.11 mi22388-44213444-22413444-22423456(Top 81%)13939(Top 85%)13939(Top 1801%)
HALF13.11 mi0.68 mi22463-7513481-3713481-3723666(Top 82%)14050(Top 86%)14050(Top 1815%)
25K15.53 mi2.42 mi22606-14313552-7113552-7123019(Top 79%)13714(Top 84%)13714(Top 1772%)
30K18.64 mi3.11 mi22693-8713554-213554-222892(Top 79%)13570(Top 83%)13570(Top 1753%)
20M20.00 mi1.36 mi22684+913531+2313531+2322836(Top 79%)13467(Top 82%)13467(Top 1740%)
21M21.00 mi1.00 mi22670+1413510+2113510+2122569(Top 78%)13303(Top 81%)13303(Top 1719%)
35K21.75 mi0.75 mi22665+513497+1313497+1322494(Top 78%)13204(Top 81%)13204(Top 1706%)
23M23.00 mi1.25 mi22636+2913466+3113466+3122258(Top 77%)13041(Top 80%)13041(Top 1685%)
24M24.00 mi1.00 mi22620+1613444+2213444+2222380(Top 77%)13073(Top 80%)13073(Top 1689%)
40K24.85 mi0.85 mi22599+2113416+2813416+2822250(Top 77%)12942(Top 79%)12942(Top 1672%)
25.2M25.20 mi0.35 mi22570+2913398+1813398+1821136(Top 73%)12433(Top 76%)12433(Top 1606%)
FINISH26.22 mi1.02 mi22632-6213417-1913417-1924120(Top 83%)13853(Top 85%)13853(Top 1790%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 77%
×21
+97ft-345ft

Overall

22402

Males

13482

M65-69

13482

5K→10K

3.1 - 6.2 mi

Top 77%
×5
+79ft-138ft

Overall

22328

Males

13417

M65-69

13417

10K→15K

6.2 - 9.3 mi

Top 77%
×3
+67ft-78ft

Overall

22402

Males

13482

M65-69

13482

15K→20K

9.3 - 12.4 mi

Top 81%
×5
+106ft-86ft

Overall

23456

Males

13939

M65-69

13939

20K→HALF

12.4 - 13.1 mi

Top 82%
×2
+19ft-37ft

Overall

23666

Males

14050

M65-69

14050

HALF→25K

13.1 - 15.5 mi

Top 79%
×4
+66ft-88ft

Overall

23019

Males

13714

M65-69

13714

25K→30K

15.5 - 18.6 mi

Top 79%
×9
+181ft-148ft

Overall

22892

Males

13570

M65-69

13570

30K→20M

18.6 - 20.0 mi

Top 79%
×5
+64ft-50ft

Overall

22836

Males

13467

M65-69

13467

20M→21M

20.0 - 21.0 mi

Top 78%
×8
+106ft-24ft

Overall

22569

Males

13303

M65-69

13303

21M→35K

21.0 - 21.8 mi

Top 78%
×7
+17ft-86ft

Overall

22494

Males

13204

M65-69

13204

35K→23M

21.8 - 23.0 mi

Top 77%
×5
+23ft-63ft

Overall

22258

Males

13041

M65-69

13041

23M→24M

23.0 - 24.0 mi

Top 77%
×6
+12ft-82ft

Overall

22380

Males

13073

M65-69

13073

24M→40K

24.0 - 24.9 mi

Top 77%
×1
+6ft-20ft

Overall

22250

Males

12942

M65-69

12942

40K→25.2M

24.9 - 25.2 mi

Top 73%
×1
+13ft-16ft

Overall

21136

Males

12433

M65-69

12433

25.2M→FINISH

25.2 - 26.2 mi

Top 83%
×2
+22ft-21ft

Overall

24120

Males

13853

M65-69

13853

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
934
Passed By
1483
Net Change
-1555
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21077
5K → 10K74200-662#21077#21739
10K → 15K91200-207#21739#21946
15K → 20K66200-442#21946#22388
20K → HALF1287-75#22388#22463
HALF → 25K84200-143#22463#22606
25K → 30K150200-87#22606#22693
30K → 20M8475+9#22693#22684
20M → 21M7460+14#22684#22670
21M → 35K3530+5#22670#22665
35K → 23M8859+29#22665#22636
23M → 24M5842+16#22636#22620
24M → 40K6140+21#22620#22599
40K → 25.2M356+29#22599#22570
25.2M → FINISH2284-62#22570#22632
TOTALS9341483-1555
📊

Passing Analysis Visualizations

Explore your passing analysis through 5 different visualizations. Scroll to discover each one.

Time:
Category:

📈Position Graph

Loading...

🎨Heatmap Timeline

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Qualifying & Age Grade

See how your performance stacks up against qualifying standards

OTQ

Olympic Trials Qualifying analysis available

Activity Data

Upload your GPX file to see detailed activity metrics

Upload your GPX file

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

.gpx files up to 10MB

Export & Support

Download your data, get help, and share your feedback

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
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing