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BOSTON MARATHON 2023

Melaine Balsdon

Bib: 18789•F

NY

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 48%
Gender (Female)
#0 / 11423
Top 31%
Masters (Masters Women)
#0 / 6539
Top 17%
Division (F45-49)
#0 / 1817
Top 18%
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
7:53/mi
24:29
↑ 97↓ 3451.5%
10K· 6.21 mi
7:46/mi
48:36
↑ 79↓ 1380.4%
15K· 9.32 mi
7:51/mi
1:12:58
↑ 67↓ 78
20K· 12.43 mi
8:01/mi
1:37:52
↑ 106↓ 860.1%
Half· 13.11 mi
7:45/mi
1:43:09
↑ 19↓ 370.5%
25K· 15.53 mi
8:05/mi
2:02:44
↑ 66↓ 880.2%
30K· 18.64 mi
8:23/mi
2:28:48
↑ 181↓ 1480.2%
20M
8:32/mi
2:40:23
↑ 64↓ 500.2%
21M
8:32/mi
2:48:55
↑ 106↓ 241.6%
35K· 21.75 mi
7:51/mi
2:54:47
↑ 17↓ 861.7%
23M
8:21/mi
3:05:14
↑ 23↓ 630.6%
24M
8:01/mi
3:13:15
↓ 821.3%
40K· 24.85 mi
8:17/mi
3:20:20
↓ 200.3%
25.2M
8:54/mi
3:23:24
↑ 13↓ 160.2%
Finish· 26.22 mi
7:56/mi
3:31:29
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:43:09
Pace7:52 /mi
2nd Half
Distance13.11 mi
Time1:48:20
Pace8:16 /mi
📊Positive Split: 5.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:4124:297:5324:29
7:53
-
10K
6.21 mi11:39:4848:367:4924:07
7:46
-0:07
15K
9.32 mi12:04:101:12:587:5024:22
7:51
+0:05
20K
12.43 mi12:29:041:37:527:5324:54
8:01
+0:10
Half
13.11 mi12:34:211:43:097:525:17
7:45
-0:16
25K
15.53 mi12:53:562:02:447:5419:35
8:05
+0:20
30K
18.64 mi13:20:002:28:487:5926:04
8:23
+0:18
20M
20.00 mi13:31:352:40:238:0111:35
8:32
+0:09
21M
21.00 mi13:40:072:48:558:038:32
8:32
0:00
35K
21.75 mi13:45:592:54:478:025:52
7:51
-0:41
23M
23.00 mi13:56:263:05:148:0310:27
8:21
+0:30
24M
24.00 mi14:04:273:13:158:038:01
8:01
-0:20
40K
24.85 mi14:11:323:20:208:047:05
8:17
+0:16
25.2M
25.20 mi14:14:363:23:248:043:04
8:54
+0:37
Finish
26.22 mi14:22:413:31:298:048:05
7:56
-0:58

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

7:45 /mi

Average Pace

8:04 /mi

Slowest Pace

8:54 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:08:18

89% of race

Time at Steady Pace

23:11

11% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:04 /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 mi11:15:4124:297:5324:29
7:53
#13096
10K
6.21 mi11:39:4848:367:4924:07
7:46
#12903
15K
9.32 mi12:04:101:12:587:5024:22
7:51
#12961
20K
12.43 mi12:29:041:37:527:5324:54
8:01
#13085
Half
13.11 mi12:34:211:43:097:525:17
7:45
#13025
25K
15.53 mi12:53:562:02:447:5419:35
8:05
#13047
30K
18.64 mi13:20:002:28:487:5926:04
8:23
#13153
20M
20.00 mi13:31:352:40:238:0111:35
8:32
#13199
21M
21.00 mi13:40:072:48:558:038:32
8:32
#13010
35K
21.75 mi13:45:592:54:478:025:52
7:51
#12925
23M
23.00 mi13:56:263:05:148:0310:27
8:21
#12869
24M
24.00 mi14:04:273:13:158:038:01
8:01
#12783
40K
24.85 mi14:11:323:20:208:047:05
8:17
#12738
25.2M
25.20 mi14:14:363:23:248:043:04
8:54
#12726
Finish
26.22 mi14:22:413:31:298:048:05
7:56
#12668
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi130963499349913082(Top 49%)3526(Top 31%)3526(Top 194%)
10K6.21 mi3.10 mi12903+1933384+1153384+11512808(Top 48%)3320(Top 29%)3320(Top 183%)
15K9.32 mi3.11 mi12961-583436-523436-5213082(Top 49%)3526(Top 31%)3526(Top 194%)
20K12.43 mi3.11 mi13085-1243534-983534-9813559(Top 51%)3845(Top 34%)3845(Top 212%)
Half13.11 mi0.68 mi13025+603499+353499+3512317(Top 46%)3109(Top 27%)3109(Top 171%)
25K15.53 mi2.42 mi13047-223522-233522-2313348(Top 50%)3832(Top 34%)3832(Top 211%)
30K18.64 mi3.11 mi13153-1063640-1183640-11813631(Top 51%)4106(Top 36%)4106(Top 226%)
20M20.00 mi1.36 mi13199-463681-413681-4113818(Top 52%)4317(Top 38%)4317(Top 238%)
21M21.00 mi1.00 mi13010+1893594+873594+8710633(Top 40%)2704(Top 24%)2704(Top 149%)
35K21.75 mi0.75 mi12925+853563+313563+3111015(Top 41%)2892(Top 25%)2892(Top 159%)
23M23.00 mi1.25 mi12869+563552+113552+1112239(Top 46%)3650(Top 32%)3650(Top 201%)
24M24.00 mi1.00 mi12783+863523+293523+2911392(Top 43%)3287(Top 29%)3287(Top 181%)
40K24.85 mi0.85 mi12738+453517+63517+611950(Top 45%)3640(Top 32%)3640(Top 200%)
25.2M25.20 mi0.35 mi12726+123513+43513+411968(Top 45%)3706(Top 32%)3706(Top 204%)
Finish26.22 mi1.02 mi12668+583500+133500+1311648(Top 44%)3519(Top 31%)3519(Top 194%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 49%
×21story building
+97ft-345ft

Overall

13082

Females

3526

F45-49

3526

5K→10K

3.1 - 6.2 mi

Top 48%
×5story building
+79ft-138ft

Overall

12808

Females

3320

F45-49

3320

10K→15K

6.2 - 9.3 mi

Top 49%
×3story building
+67ft-78ft

Overall

13082

Females

3526

F45-49

3526

15K→20K

9.3 - 12.4 mi

Top 51%
×5story building
+106ft-86ft

Overall

13559

Females

3845

F45-49

3845

20K→Half

12.4 - 13.1 mi

Top 46%
×2story building
+19ft-37ft

Overall

12317

Females

3109

F45-49

3109

Half→25K

13.1 - 15.5 mi

Top 50%
×4story building
+66ft-88ft

Overall

13348

Females

3832

F45-49

3832

25K→30K

15.5 - 18.6 mi

Top 51%
×9story building
+181ft-148ft

Overall

13631

Females

4106

F45-49

4106

30K→20M

18.6 - 20.0 mi

Top 52%
×5story building
+64ft-50ft

Overall

13818

Females

4317

F45-49

4317

20M→21M

20.0 - 21.0 mi

Top 40%
×8story building
+106ft-24ft

Overall

10633

Females

2704

F45-49

2704

21M→35K

21.0 - 21.8 mi

Top 41%
×7story building
+17ft-86ft

Overall

11015

Females

2892

F45-49

2892

35K→23M

21.8 - 23.0 mi

Top 46%
×5story building
+23ft-63ft

Overall

12239

Females

3650

F45-49

3650

23M→24M

23.0 - 24.0 mi

Top 43%
×6story building
+12ft-82ft

Overall

11392

Females

3287

F45-49

3287

24M→40K

24.0 - 24.9 mi

Top 45%
×1story
+6ft-20ft

Overall

11950

Females

3640

F45-49

3640

40K→25.2M

24.9 - 25.2 mi

Top 45%
×1story
+13ft-16ft

Overall

11968

Females

3706

F45-49

3706

25.2M→Finish

25.2 - 26.2 mi

Top 44%
×2story building
+22ft-21ft

Overall

11648

Females

3519

F45-49

3519

Passing Analysis

Category:
Athletes Passed
1915
Passed By
1487
Net Change
+428
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13096
5K → 10K421228+193#13096#12903
10K → 15K181239-58#12903#12961
15K → 20K140264-124#12961#13085
20K → Half7010+60#13085#13025
Half → 25K136158-22#13025#13047
25K → 30K156262-106#13047#13153
30K → 20M76122-46#13153#13199
20M → 21M20718+189#13199#13010
21M → 35K949+85#13010#12925
35K → 23M11054+56#12925#12869
23M → 24M11529+86#12869#12783
24M → 40K8237+45#12783#12738
40K → 25.2M3624+12#12738#12726
25.2M → Finish9133+58#12726#12668
TOTALS19151487+428
📊

Passing Visuals

Category:
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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