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BOSTON MARATHON 2023

Natchanit Sirisantana

Bib: 30041•F

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Division (F18-39)
#0 / 4884
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
32:04
Rank: #24275
Start → 5K
32:04 | 10:19/mi
10K· 6.21 mi
1:03:30
Rank: #24108 (+167)
5K → 10K
31:26 | 10:07/mi
15K· 9.32 mi
1:35:03
Rank: #24009 (+99)
10K → 15K
31:33 | 10:09/mi
20K· 12.43 mi
2:07:24
Rank: #23917 (+92)
15K → 20K
32:21 | 10:25/mi
Half· 13.11 mi
2:14:23
Rank: #23902 (+15)
20K → Half
6:59 | 10:14/mi
25K· 15.53 mi
2:39:16
Rank: #23686 (+216)
Half → 25K
24:53 | 10:16/mi
30K· 18.64 mi
3:12:36
Rank: #23505 (+181)
25K → 30K
33:20 | 10:44/mi
20M
3:27:09
Rank: #23398 (+107)
30K → 20M
14:33 | 10:43/mi
21M
3:37:52
Rank: #23248 (+150)
20M → 21M
10:43 | 10:43/mi
35K· 21.75 mi
3:45:43
Rank: #23207 (+41)
21M → 35K
7:51 | 10:30/mi
23M
3:59:17
Rank: #23144 (+63)
35K → 23M
13:34 | 10:50/mi
24M
4:09:50
Rank: #23097 (+47)
23M → 24M
10:33 | 10:33/mi
40K· 24.85 mi
4:18:50
Rank: #23011 (+86)
24M → 40K
9:00 | 10:32/mi
25.2M
4:22:32
Rank: #22965 (+46)
40K → 25.2M
3:42 | 10:44/mi
Finish· 26.22 mi
4:32:02
Rank: #22884 (+81)
25.2M → Finish
9:30 | 9:19/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:14:23
Pace10:15 /mi
2nd Half
Distance13.11 mi
Time2:17:39
Pace10:30 /mi
📊Positive Split: 2.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:50:2832:0410:1932:04
10:19
-
10K
6.21 mi12:21:541:03:3010:1331:26
10:07
-0:12
15K
9.32 mi12:53:271:35:0310:1231:33
10:09
+0:02
20K
12.43 mi13:25:482:07:2410:1532:21
10:25
+0:16
Half
13.11 mi13:32:472:14:2310:156:59
10:14
-0:11
25K
15.53 mi13:57:402:39:1610:1524:53
10:16
+0:02
30K
18.64 mi14:31:003:12:3610:2033:20
10:44
+0:28
20M
20.00 mi14:45:333:27:0910:2114:33
10:43
-0:01
21M
21.00 mi14:56:163:37:5210:2210:43
10:43
0:00
35K
21.75 mi15:04:073:45:4310:237:51
10:30
-0:13
23M
23.00 mi15:17:413:59:1710:2413:34
10:50
+0:20
24M
24.00 mi15:28:144:09:5010:2510:33
10:33
-0:17
40K
24.85 mi15:37:144:18:5010:259:00
10:32
-0:01
25.2M
25.20 mi15:40:564:22:3210:253:42
10:44
+0:12
Finish
26.22 mi15:50:264:32:0210:239:30
9:19
-1:25

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

9:19 /mi

Average Pace

10:23 /mi

Slowest Pace

10:50 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:19:28

29% of race

Time at Steady Pace

3:12:34

71% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 10:23 /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 mi11:50:2832:0410:1932:04
10:19
#24275
10K
6.21 mi12:21:541:03:3010:1331:26
10:07
#24108
15K
9.32 mi12:53:271:35:0310:1231:33
10:09
#24009
20K
12.43 mi13:25:482:07:2410:1532:21
10:25
#23917
Half
13.11 mi13:32:472:14:2310:156:59
10:14
#23902
25K
15.53 mi13:57:402:39:1610:1524:53
10:16
#23686
30K
18.64 mi14:31:003:12:3610:2033:20
10:44
#23505
20M
20.00 mi14:45:333:27:0910:2114:33
10:43
#23398
21M
21.00 mi14:56:163:37:5210:2210:43
10:43
#23248
35K
21.75 mi15:04:073:45:4310:237:51
10:30
#23207
23M
23.00 mi15:17:413:59:1710:2413:34
10:50
#23144
24M
24.00 mi15:28:144:09:5010:2510:33
10:33
#23097
40K
24.85 mi15:37:144:18:5010:259:00
10:32
#23011
25.2M
25.20 mi15:40:564:22:3210:253:42
10:44
#22965
Finish
26.22 mi15:50:264:32:0210:239:30
9:19
#22884
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi24275100241002423790(Top 89%)9773(Top 86%)9773(Top 200%)
10K6.21 mi3.10 mi24108+1679952+729952+7223947(Top 90%)9856(Top 86%)9856(Top 202%)
15K9.32 mi3.11 mi24009+999897+559897+5523790(Top 89%)9773(Top 86%)9773(Top 200%)
20K12.43 mi3.11 mi23917+929841+569841+5623678(Top 89%)9731(Top 85%)9731(Top 199%)
Half13.11 mi0.68 mi23902+159833+89833+823738(Top 89%)9759(Top 85%)9759(Top 200%)
25K15.53 mi2.42 mi23686+2169727+1069727+10622769(Top 86%)9256(Top 81%)9256(Top 190%)
30K18.64 mi3.11 mi23505+1819648+799648+7922653(Top 85%)9274(Top 81%)9274(Top 190%)
20M20.00 mi1.36 mi23398+1079605+439605+4322186(Top 83%)9089(Top 80%)9089(Top 186%)
21M21.00 mi1.00 mi23248+1509532+739532+7320170(Top 76%)8022(Top 70%)8022(Top 164%)
35K21.75 mi0.75 mi23207+419520+129520+1222389(Top 84%)9265(Top 81%)9265(Top 190%)
23M23.00 mi1.25 mi23144+639496+249496+2422041(Top 83%)9096(Top 80%)9096(Top 186%)
24M24.00 mi1.00 mi23097+479484+129484+1222148(Top 83%)9187(Top 80%)9187(Top 188%)
40K24.85 mi0.85 mi23011+869449+359449+3521290(Top 80%)8771(Top 77%)8771(Top 180%)
25.2M25.20 mi0.35 mi22965+469423+269423+2619851(Top 75%)7992(Top 70%)7992(Top 164%)
Finish26.22 mi1.02 mi22884+819392+319392+3119489(Top 73%)7732(Top 68%)7732(Top 158%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 89%
×21stories
+97ft-345ft

Overall

23790

Females

9773

F18-39

9773

5K→10K

3.1 - 6.2 mi

Top 90%
×5stories
+79ft-138ft

Overall

23947

Females

9856

F18-39

9856

10K→15K

6.2 - 9.3 mi

Top 89%
×3stories
+67ft-78ft

Overall

23790

Females

9773

F18-39

9773

15K→20K

9.3 - 12.4 mi

Top 89%
×5stories
+106ft-86ft

Overall

23678

Females

9731

F18-39

9731

20K→Half

12.4 - 13.1 mi

Top 89%
×2stories
+19ft-37ft

Overall

23738

Females

9759

F18-39

9759

Half→25K

13.1 - 15.5 mi

Top 86%
×4stories
+66ft-88ft

Overall

22769

Females

9256

F18-39

9256

25K→30K

15.5 - 18.6 mi

Top 85%
×9stories
+181ft-148ft

Overall

22653

Females

9274

F18-39

9274

30K→20M

18.6 - 20.0 mi

Top 83%
×5stories
+64ft-50ft

Overall

22186

Females

9089

F18-39

9089

20M→21M

20.0 - 21.0 mi

Top 76%
×8stories
+106ft-24ft

Overall

20170

Females

8022

F18-39

8022

21M→35K

21.0 - 21.8 mi

Top 84%
×7stories
+17ft-86ft

Overall

22389

Females

9265

F18-39

9265

35K→23M

21.8 - 23.0 mi

Top 83%
×5stories
+23ft-63ft

Overall

22041

Females

9096

F18-39

9096

23M→24M

23.0 - 24.0 mi

Top 83%
×6stories
+12ft-82ft

Overall

22148

Females

9187

F18-39

9187

24M→40K

24.0 - 24.9 mi

Top 80%
×1story
+6ft-20ft

Overall

21290

Females

8771

F18-39

8771

40K→25.2M

24.9 - 25.2 mi

Top 75%
×1story
+13ft-16ft

Overall

19851

Females

7992

F18-39

7992

25.2M→Finish

25.2 - 26.2 mi

Top 73%
×2stories
+22ft-21ft

Overall

19489

Females

7732

F18-39

7732

Passing Analysis

Category:
Athletes Passed
1769
Passed By
378
Net Change
+1391
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24275
5K → 10K295128+167#24275#24108
10K → 15K17879+99#24108#24009
15K → 20K16270+92#24009#23917
20K → Half3520+15#23917#23902
Half → 25K2215+216#23902#23686
25K → 30K20322+181#23686#23505
30K → 20M1158+107#23505#23398
20M → 21M1500+150#23398#23248
21M → 35K5110+41#23248#23207
35K → 23M7815+63#23207#23144
23M → 24M6013+47#23144#23097
24M → 40K893+86#23097#23011
40K → 25.2M460+46#23011#22965
25.2M → Finish865+81#22965#22884
TOTALS1769378+1391
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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