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BOSTON MARATHON 2023

Natasha Bliss

Bib: 165•F

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 6%
Gender (Female)
#0 / 11423
Top 0.7%
Masters (Masters Women)
#0 / 6539
Top 0.2%
Division (F40-44)
#0 / 1878
Top 0.4%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
18:59
Rank: #926
Start → 5K
18:59 | 6:07/mi
10K· 6.21 mi
38:43
Rank: #1308 (-382)
5K → 10K
19:44 | 6:21/mi
15K· 9.32 mi
58:47
Rank: #1616 (-308)
10K → 15K
20:04 | 6:28/mi
20K· 12.43 mi
1:18:57
Rank: #1735 (-119)
15K → 20K
20:10 | 6:29/mi
Half· 13.11 mi
1:23:17
Rank: #1750 (-15)
20K → Half
4:20 | 6:21/mi
25K· 15.53 mi
1:39:02
Rank: #1791 (-41)
Half → 25K
15:45 | 6:30/mi
30K· 18.64 mi
1:59:35
Rank: #1807 (-16)
25K → 30K
20:33 | 6:37/mi
20M
2:08:33
Rank: #1785 (+22)
30K → 20M
8:58 | 6:36/mi
21M
2:15:30
Rank: #1776 (+9)
20M → 21M
6:57 | 6:57/mi
35K· 21.75 mi
2:20:18
Rank: #1783 (-7)
21M → 35K
4:48 | 6:25/mi
23M
2:28:43
Rank: #1788 (-5)
35K → 23M
8:25 | 6:43/mi
24M
2:35:11
Rank: #1772 (+16)
23M → 24M
6:28 | 6:28/mi
40K· 24.85 mi
2:40:48
Rank: #1748 (+24)
24M → 40K
5:37 | 6:34/mi
25.2M
2:43:14
Rank: #1749 (-1)
40K → 25.2M
2:26 | 7:03/mi
Finish· 26.22 mi
2:49:42
Rank: #1730 (+19)
25.2M → Finish
6:28 | 6:21/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:23:17
Pace6:21 /mi
2nd Half
Distance13.11 mi
Time1:26:25
Pace6:36 /mi
📊Positive Split: 3.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:05:5918:596:0718:59
6:07
-
10K
6.21 mi10:25:4338:436:1419:44
6:21
+0:14
15K
9.32 mi10:45:4758:476:1820:04
6:28
+0:07
20K
12.43 mi11:05:571:18:576:2120:10
6:29
+0:01
Half
13.11 mi11:10:171:23:176:214:20
6:21
-0:08
25K
15.53 mi11:26:021:39:026:2315:45
6:30
+0:09
30K
18.64 mi11:46:351:59:356:2520:33
6:37
+0:07
20M
20.00 mi11:55:332:08:336:268:58
6:36
-0:01
21M
21.00 mi12:02:302:15:306:276:57
6:57
+0:21
35K
21.75 mi12:07:182:20:186:274:48
6:25
-0:32
23M
23.00 mi12:15:432:28:436:288:25
6:43
+0:18
24M
24.00 mi12:22:112:35:116:286:28
6:28
-0:15
40K
24.85 mi12:27:482:40:486:285:37
6:34
+0:06
25.2M
25.20 mi12:30:142:43:146:292:26
7:03
+0:29
Finish
26.22 mi12:36:422:49:426:296:28
6:21
-0:42

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

6:07 /mi

Average Pace

6:29 /mi

Slowest Pace

7:03 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:40:19

94% of race

Time at Steady Pace

9:23

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:28 /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 mi10:05:5918:596:0718:59
6:07
#926
10K
6.21 mi10:25:4338:436:1419:44
6:21
#1308
15K
9.32 mi10:45:4758:476:1820:04
6:28
#1616
20K
12.43 mi11:05:571:18:576:2120:10
6:29
#1735
Half
13.11 mi11:10:171:23:176:214:20
6:21
#1750
25K
15.53 mi11:26:021:39:026:2315:45
6:30
#1791
30K
18.64 mi11:46:351:59:356:2520:33
6:37
#1807
20M
20.00 mi11:55:332:08:336:268:58
6:36
#1785
21M
21.00 mi12:02:302:15:306:276:57
6:57
#1776
35K
21.75 mi12:07:182:20:186:274:48
6:25
#1783
23M
23.00 mi12:15:432:28:436:288:25
6:43
#1788
24M
24.00 mi12:22:112:35:116:286:28
6:28
#1772
40K
24.85 mi12:27:482:40:486:285:37
6:34
#1748
25.2M
25.20 mi12:30:142:43:146:292:26
7:03
#1749
Finish
26.22 mi12:36:422:49:426:296:28
6:21
#1730
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi92653532414(Top 9%)96(Top 0.8%)96(Top 5%)
10K6.21 mi3.10 mi1308-38264-1164-111997(Top 8%)83(Top 0.7%)83(Top 4%)
15K9.32 mi3.11 mi1616-30871-771-72414(Top 9%)96(Top 0.8%)96(Top 5%)
20K12.43 mi3.11 mi1735-11974-374-32242(Top 8%)89(Top 0.8%)89(Top 5%)
Half13.11 mi0.68 mi1750-1576-276-22043(Top 8%)77(Top 0.7%)77(Top 4%)
25K15.53 mi2.42 mi1791-4177-177-12165(Top 8%)86(Top 0.8%)86(Top 5%)
30K18.64 mi3.11 mi1807-1677772024(Top 8%)86(Top 0.8%)86(Top 5%)
20M20.00 mi1.36 mi1785+2277771871(Top 7%)86(Top 0.8%)86(Top 5%)
21M21.00 mi1.00 mi1776+974+374+31948(Top 7%)98(Top 0.9%)98(Top 5%)
35K21.75 mi0.75 mi1783-774742072(Top 8%)102(Top 0.9%)102(Top 5%)
23M23.00 mi1.25 mi1788-577-377-32291(Top 9%)129(Top 1%)129(Top 7%)
24M24.00 mi1.00 mi1772+1676+176+11990(Top 7%)121(Top 1%)121(Top 6%)
40K24.85 mi0.85 mi1748+2476761829(Top 7%)108(Top 0.9%)108(Top 6%)
25.2M25.20 mi0.35 mi1749-177-177-12006(Top 8%)118(Top 1%)118(Top 6%)
Finish26.22 mi1.02 mi1730+1976+176+11833(Top 7%)115(Top 1%)115(Top 6%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 9%
×21stories
+97ft-345ft

Overall

2414

Females

96

F40-44

96

5K→10K

3.1 - 6.2 mi

Top 8%
×5stories
+79ft-138ft

Overall

1997

Females

83

F40-44

83

10K→15K

6.2 - 9.3 mi

Top 9%
×3stories
+67ft-78ft

Overall

2414

Females

96

F40-44

96

15K→20K

9.3 - 12.4 mi

Top 8%
×5stories
+106ft-86ft

Overall

2242

Females

89

F40-44

89

20K→Half

12.4 - 13.1 mi

Top 8%
×2stories
+19ft-37ft

Overall

2043

Females

77

F40-44

77

Half→25K

13.1 - 15.5 mi

Top 8%
×4stories
+66ft-88ft

Overall

2165

Females

86

F40-44

86

25K→30K

15.5 - 18.6 mi

Top 8%
×9stories
+181ft-148ft

Overall

2024

Females

86

F40-44

86

30K→20M

18.6 - 20.0 mi

Top 7%
×5stories
+64ft-50ft

Overall

1871

Females

86

F40-44

86

20M→21M

20.0 - 21.0 mi

Top 7%
×8stories
+106ft-24ft

Overall

1948

Females

98

F40-44

98

21M→35K

21.0 - 21.8 mi

Top 8%
×7stories
+17ft-86ft

Overall

2072

Females

102

F40-44

102

35K→23M

21.8 - 23.0 mi

Top 9%
×5stories
+23ft-63ft

Overall

2291

Females

129

F40-44

129

23M→24M

23.0 - 24.0 mi

Top 7%
×6stories
+12ft-82ft

Overall

1990

Females

121

F40-44

121

24M→40K

24.0 - 24.9 mi

Top 7%
×1story
+6ft-20ft

Overall

1829

Females

108

F40-44

108

40K→25.2M

24.9 - 25.2 mi

Top 8%
×1story
+13ft-16ft

Overall

2006

Females

118

F40-44

118

25.2M→Finish

25.2 - 26.2 mi

Top 7%
×2stories
+22ft-21ft

Overall

1833

Females

115

F40-44

115

Passing Analysis

Category:
Athletes Passed
348
Passed By
1152
Net Change
-804
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#926
5K → 10K0382-382#926#1308
10K → 15K6314-308#1308#1616
15K → 20K20139-119#1616#1735
20K → Half823-15#1735#1750
Half → 25K2061-41#1750#1791
25K → 30K5268-16#1791#1807
30K → 20M4220+22#1807#1785
20M → 21M3324+9#1785#1776
21M → 35K1825-7#1776#1783
35K → 23M2934-5#1783#1788
23M → 24M3115+16#1788#1772
24M → 40K3713+24#1772#1748
40K → 25.2M1112-1#1748#1749
25.2M → Finish4122+19#1749#1730
TOTALS3481152-804
📊

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