Boston Marathon logo
BOSTON MARATHON 2023

Alexander Krausler

Bib: 31238•M

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 50%
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
7:31/mi
23:22
↑ 97↓ 3451.5%
10K· 6.21 mi
7:05/mi
45:23
↑ 79↓ 1380.4%
15K· 9.32 mi
7:25/mi
1:08:24
↑ 67↓ 78
20K· 12.43 mi
7:39/mi
1:32:09
↑ 106↓ 860.1%
Half· 13.11 mi
7:27/mi
1:37:14
↑ 19↓ 370.5%
25K· 15.53 mi
7:57/mi
1:56:30
↑ 66↓ 880.2%
30K· 18.64 mi
8:58/mi
2:24:23
↑ 181↓ 1480.2%
20M
8:39/mi
2:36:08
↑ 64↓ 500.2%
21M
9:53/mi
2:46:01
↑ 106↓ 241.6%
35K· 21.75 mi
8:19/mi
2:52:14
↑ 17↓ 861.7%
23M
10:17/mi
3:05:07
↑ 23↓ 630.6%
24M
8:59/mi
3:14:06
↓ 821.3%
40K· 24.85 mi
8:53/mi
3:21:42
↓ 200.3%
25.2M
9:23/mi
3:24:56
↑ 13↓ 160.2%
Finish· 26.22 mi
8:47/mi
3:33:53
↑ 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
Time1:37:14
Pace7:25 /mi
2nd Half
Distance13.11 mi
Time1:56:39
Pace8:54 /mi
📊Positive Split: 20.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:43:0223:227:3123:22
7:31
-
10K
6.21 mi12:05:0345:237:1822:01
7:05
-0:26
15K
9.32 mi12:28:041:08:247:2023:01
7:25
+0:20
20K
12.43 mi12:51:491:32:097:2523:45
7:39
+0:14
Half
13.11 mi12:56:541:37:147:255:05
7:27
-0:12
25K
15.53 mi13:16:101:56:307:3019:16
7:57
+0:30
30K
18.64 mi13:44:032:24:237:4527:53
8:58
+1:01
20M
20.00 mi13:55:482:36:087:4811:45
8:39
-0:19
21M
21.00 mi14:05:412:46:017:549:53
9:53
+1:14
35K
21.75 mi14:11:542:52:147:556:13
8:19
-1:34
23M
23.00 mi14:24:473:05:078:0312:53
10:17
+1:58
24M
24.00 mi14:33:463:14:068:058:59
8:59
-1:18
40K
24.85 mi14:41:223:21:428:077:36
8:53
-0:06
25.2M
25.20 mi14:44:363:24:568:083:14
9:23
+0:30
Finish
26.22 mi14:53:333:33:538:108:57
8:47
-0:36

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

7:05 /mi

Average Pace

8:10 /mi

Slowest Pace

10:17 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:56:30

54% of race

Time at Steady Pace

1:11:23

33% of race

Time at Slower Pace

26:00

12% of race

Average Pace: 8:09 /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 mi11:43:0223:227:3123:22
7:31
#9806
10K
6.21 mi12:05:0345:237:1822:01
7:05
#8468
15K
9.32 mi12:28:041:08:247:2023:01
7:25
#8759
20K
12.43 mi12:51:491:32:097:2523:45
7:39
#9113
Half
13.11 mi12:56:541:37:147:255:05
7:27
#9142
25K
15.53 mi13:16:101:56:307:3019:16
7:57
#9648
30K
18.64 mi13:44:032:24:237:4527:53
8:58
#11136
20M
20.00 mi13:55:482:36:087:4811:45
8:39
#11415
21M
21.00 mi14:05:412:46:017:549:53
9:53
#11913
35K
21.75 mi14:11:542:52:147:556:13
8:19
#11993
23M
23.00 mi14:24:473:05:078:0312:53
10:17
#12832
24M
24.00 mi14:33:463:14:068:058:59
8:59
#13040
40K
24.85 mi14:41:223:21:428:077:36
8:53
#13112
25.2M
25.20 mi14:44:363:24:568:083:14
9:23
#13122
Finish
26.22 mi14:53:333:33:538:108:57
8:47
#13309
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi9806804180419412(Top 35%)7816(Top 52%)7816(Top 148%)
10K6.21 mi3.10 mi8468+13387256+7857256+7857367(Top 28%)6511(Top 43%)6511(Top 123%)
15K9.32 mi3.11 mi8759-2917416-1607416-1609412(Top 35%)7816(Top 52%)7816(Top 148%)
20K12.43 mi3.11 mi9113-3547620-2047620-20410460(Top 39%)8324(Top 55%)8324(Top 158%)
Half13.11 mi0.68 mi9142-297639-197639-199831(Top 37%)8024(Top 53%)8024(Top 152%)
25K15.53 mi2.42 mi9648-5067930-2917930-29112274(Top 46%)9025(Top 59%)9025(Top 171%)
30K18.64 mi3.11 mi11136-14888636-7068636-70617020(Top 64%)10922(Top 72%)10922(Top 207%)
20M20.00 mi1.36 mi11415-2798733-978733-9714533(Top 55%)9787(Top 64%)9787(Top 185%)
21M21.00 mi1.00 mi11913-4988938-2058938-20517548(Top 66%)11022(Top 73%)11022(Top 209%)
35K21.75 mi0.75 mi11993-808962-248962-2414121(Top 53%)9476(Top 62%)9476(Top 179%)
23M23.00 mi1.25 mi12832-8399289-3279289-32720797(Top 78%)12365(Top 81%)12365(Top 234%)
24M24.00 mi1.00 mi13040-2089348-599348-5917124(Top 64%)10670(Top 70%)10670(Top 202%)
40K24.85 mi0.85 mi13112-729358-109358-1015521(Top 58%)9904(Top 65%)9904(Top 187%)
25.2M25.20 mi0.35 mi13122-109353+59353+514502(Top 54%)9458(Top 62%)9458(Top 179%)
Finish26.22 mi1.02 mi13309-1879411-589411-5816913(Top 64%)10564(Top 70%)10564(Top 200%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 35%
×21story building
+97ft-345ft

Overall

9412

Males

7816

M18-39

7816

5K→10K

3.1 - 6.2 mi

Top 28%
×5story building
+79ft-138ft

Overall

7367

Males

6511

M18-39

6511

10K→15K

6.2 - 9.3 mi

Top 35%
×3story building
+67ft-78ft

Overall

9412

Males

7816

M18-39

7816

15K→20K

9.3 - 12.4 mi

Top 39%
×5story building
+106ft-86ft

Overall

10460

Males

8324

M18-39

8324

20K→Half

12.4 - 13.1 mi

Top 37%
×2story building
+19ft-37ft

Overall

9831

Males

8024

M18-39

8024

Half→25K

13.1 - 15.5 mi

Top 46%
×4story building
+66ft-88ft

Overall

12274

Males

9025

M18-39

9025

25K→30K

15.5 - 18.6 mi

Top 64%
×9story building
+181ft-148ft

Overall

17020

Males

10922

M18-39

10922

30K→20M

18.6 - 20.0 mi

Top 55%
×5story building
+64ft-50ft

Overall

14533

Males

9787

M18-39

9787

20M→21M

20.0 - 21.0 mi

Top 66%
×8story building
+106ft-24ft

Overall

17548

Males

11022

M18-39

11022

21M→35K

21.0 - 21.8 mi

Top 53%
×7story building
+17ft-86ft

Overall

14121

Males

9476

M18-39

9476

35K→23M

21.8 - 23.0 mi

Top 78%
×5story building
+23ft-63ft

Overall

20797

Males

12365

M18-39

12365

23M→24M

23.0 - 24.0 mi

Top 64%
×6story building
+12ft-82ft

Overall

17124

Males

10670

M18-39

10670

24M→40K

24.0 - 24.9 mi

Top 58%
×1story
+6ft-20ft

Overall

15521

Males

9904

M18-39

9904

40K→25.2M

24.9 - 25.2 mi

Top 54%
×1story
+13ft-16ft

Overall

14502

Males

9458

M18-39

9458

25.2M→Finish

25.2 - 26.2 mi

Top 64%
×2story building
+22ft-21ft

Overall

16913

Males

10564

M18-39

10564

Passing Analysis

Category:
Athletes Passed
1698
Passed By
5200
Net Change
-3503
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9806
5K → 10K135618+1338#9806#8468
10K → 15K62353-291#8468#8759
15K → 20K42396-354#8759#9113
20K → Half1544-29#9113#9142
Half → 25K33539-506#9142#9648
25K → 30K91496-1488#9648#11136
30K → 20M27306-279#11136#11415
20M → 21M13511-498#11415#11913
21M → 35K25105-80#11913#11993
35K → 23M4843-839#11993#12832
23M → 24M23231-208#12832#13040
24M → 40K41113-72#13040#13112
40K → 25.2M3444-10#13112#13122
25.2M → Finish14201-187#13122#13309
TOTALS16985200-3503
📊

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