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BOSTON MARATHON 2025

Iris Flak

Bib: 19211•F

SC

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 30%
Gender (Female)
#0 / 12228
Top 13%
Masters (Masters Women)
#0 / 6759
Top 4%
Division (F45-49)
#0 / 1813
Top 5%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:36
Rank: #10112
Start → 5K
22:36 | 7:16/mi
10K· 6.21 mi
44:14
Rank: #8782 (+1330)
5K → 10K
21:38 | 6:58/mi
15K· 9.32 mi
1:06:00
Rank: #8341 (+441)
10K → 15K
21:46 | 7:00/mi
20K· 12.43 mi
1:28:32
Rank: #8340 (+1)
15K → 20K
22:32 | 7:15/mi
Half· 13.11 mi
1:33:30
Rank: #8400 (-60)
20K → Half
4:58 | 7:17/mi
25K· 15.53 mi
1:51:48
Rank: #8653 (-253)
Half → 25K
18:18 | 7:33/mi
30K· 18.64 mi
2:15:15
Rank: #8472 (+181)
25K → 30K
23:27 | 7:33/mi
20M
2:25:50
Rank: #8468 (+4)
30K → 20M
10:35 | 7:47/mi
21M
2:34:01
Rank: #8415 (+53)
20M → 21M
8:11 | 8:11/mi
35K· 21.75 mi
2:39:28
Rank: #8333 (+82)
21M → 35K
5:27 | 7:17/mi
23M
2:49:09
Rank: #8258 (+75)
35K → 23M
9:41 | 7:44/mi
24M
2:57:04
Rank: #8317 (-59)
23M → 24M
7:55 | 7:55/mi
40K· 24.85 mi
3:03:54
Rank: #8351 (-34)
24M → 40K
6:50 | 8:00/mi
25.2M
3:06:58
Rank: #8393 (-42)
40K → 25.2M
3:04 | 8:54/mi
Finish· 26.22 mi
3:15:04
Rank: #8584 (-191)
25.2M → Finish
8:06 | 7:57/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:33:30
Pace7:08 /mi
2nd Half
Distance13.11 mi
Time1:41:34
Pace7:45 /mi
📊Positive Split: 8.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:4022:367:1622:36
7:16
-
10K
6.21 mi11:36:1844:147:0721:38
6:58
-0:18
15K
9.32 mi11:58:041:06:007:0521:46
7:00
+0:02
20K
12.43 mi12:20:361:28:327:0722:32
7:15
+0:15
Half
13.11 mi12:25:341:33:307:084:58
7:17
+0:02
25K
15.53 mi12:43:521:51:487:1218:18
7:33
+0:16
30K
18.64 mi13:07:192:15:157:1523:27
7:33
0:00
20M
20.00 mi13:17:542:25:507:1710:35
7:47
+0:14
21M
21.00 mi13:26:052:34:017:208:11
8:11
+0:24
35K
21.75 mi13:31:322:39:287:205:27
7:17
-0:54
23M
23.00 mi13:41:132:49:097:219:41
7:44
+0:27
24M
24.00 mi13:49:082:57:047:237:55
7:55
+0:11
40K
24.85 mi13:55:583:03:547:246:50
8:00
+0:05
25.2M
25.20 mi13:59:023:06:587:253:04
8:54
+0:54
Finish
26.22 mi14:07:083:15:047:278:06
7:57
-0:57

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

6:58 /mi

Average Pace

7:27 /mi

Slowest Pace

8:54 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:38:57

51% of race

Time at Steady Pace

1:02:01

32% of race

Time at Slower Pace

34:06

17% of race

Average Pace: 7:26 /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 mi11:14:4022:367:1622:36
7:16
#10112
10K
6.21 mi11:36:1844:147:0721:38
6:58
#8782
15K
9.32 mi11:58:041:06:007:0521:46
7:00
#8341
20K
12.43 mi12:20:361:28:327:0722:32
7:15
#8340
Half
13.11 mi12:25:341:33:307:084:58
7:17
#8400
25K
15.53 mi12:43:521:51:487:1218:18
7:33
#8653
30K
18.64 mi13:07:192:15:157:1523:27
7:33
#8472
20M
20.00 mi13:17:542:25:507:1710:35
7:47
#8468
21M
21.00 mi13:26:052:34:017:208:11
8:11
#8415
35K
21.75 mi13:31:322:39:287:205:27
7:17
#8333
23M
23.00 mi13:41:132:49:097:219:41
7:44
#8258
24M
24.00 mi13:49:082:57:047:237:55
7:55
#8317
40K
24.85 mi13:55:583:03:547:246:50
8:00
#8351
25.2M
25.20 mi13:59:023:06:587:253:04
8:54
#8393
Finish
26.22 mi14:07:083:15:047:278:06
7:57
#8584
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 mi10112185618567678(Top 27%)928(Top 8%)928(Top 51%)
10K6.21 mi3.10 mi8782+13301290+5661290+5667693(Top 27%)902(Top 7%)902(Top 50%)
15K9.32 mi3.11 mi8341+4411136+1541136+1547678(Top 27%)928(Top 8%)928(Top 51%)
20K12.43 mi3.11 mi8340+11160-241160-248662(Top 30%)1380(Top 11%)1380(Top 76%)
Half13.11 mi0.68 mi8400-601190-301190-309867(Top 35%)1883(Top 15%)1883(Top 104%)
25K15.53 mi2.42 mi8653-2531301-1111301-11110376(Top 37%)2280(Top 19%)2280(Top 126%)
30K18.64 mi3.11 mi8472+1811290+111290+118063(Top 28%)1420(Top 12%)1420(Top 78%)
20M20.00 mi1.36 mi8468+41319-291319-298952(Top 32%)1959(Top 16%)1959(Top 108%)
21M21.00 mi1.00 mi8415+531336-171336-178497(Top 30%)1932(Top 16%)1932(Top 107%)
35K21.75 mi0.75 mi8333+821319+171319+177186(Top 25%)1363(Top 11%)1363(Top 75%)
23M23.00 mi1.25 mi8258+751334-151334-158123(Top 29%)1869(Top 15%)1869(Top 103%)
24M24.00 mi1.00 mi8317-591393-591393-5910678(Top 38%)3119(Top 26%)3119(Top 172%)
40K24.85 mi0.85 mi8351-341444-511444-5110147(Top 36%)2987(Top 24%)2987(Top 165%)
25.2M25.20 mi0.35 mi8393-421480-361480-3611200(Top 39%)3574(Top 29%)3574(Top 197%)
Finish26.22 mi1.02 mi8584-1911584-1041584-10412539(Top 44%)4196(Top 34%)4196(Top 231%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 27%
×21stories
+97ft-345ft

Overall

7678

Females

928

F45-49

928

5K→10K

3.1 - 6.2 mi

Top 27%
×5stories
+79ft-138ft

Overall

7693

Females

902

F45-49

902

10K→15K

6.2 - 9.3 mi

Top 27%
×3stories
+67ft-78ft

Overall

7678

Females

928

F45-49

928

15K→20K

9.3 - 12.4 mi

Top 30%
×5stories
+106ft-86ft

Overall

8662

Females

1380

F45-49

1380

20K→Half

12.4 - 13.1 mi

Top 35%
×2stories
+19ft-37ft

Overall

9867

Females

1883

F45-49

1883

Half→25K

13.1 - 15.5 mi

Top 37%
×4stories
+66ft-88ft

Overall

10376

Females

2280

F45-49

2280

25K→30K

15.5 - 18.6 mi

Top 28%
×9stories
+181ft-148ft

Overall

8063

Females

1420

F45-49

1420

30K→20M

18.6 - 20.0 mi

Top 32%
×5stories
+64ft-50ft

Overall

8952

Females

1959

F45-49

1959

20M→21M

20.0 - 21.0 mi

Top 30%
×8stories
+106ft-24ft

Overall

8497

Females

1932

F45-49

1932

21M→35K

21.0 - 21.8 mi

Top 25%
×7stories
+17ft-86ft

Overall

7186

Females

1363

F45-49

1363

35K→23M

21.8 - 23.0 mi

Top 29%
×5stories
+23ft-63ft

Overall

8123

Females

1869

F45-49

1869

23M→24M

23.0 - 24.0 mi

Top 38%
×6stories
+12ft-82ft

Overall

10678

Females

3119

F45-49

3119

24M→40K

24.0 - 24.9 mi

Top 36%
×1story
+6ft-20ft

Overall

10147

Females

2987

F45-49

2987

40K→25.2M

24.9 - 25.2 mi

Top 39%
×1story
+13ft-16ft

Overall

11200

Females

3574

F45-49

3574

25.2M→Finish

25.2 - 26.2 mi

Top 44%
×2stories
+22ft-21ft

Overall

12539

Females

4196

F45-49

4196

Passing Analysis

Category:
Athletes Passed
2985*
Passed By
1457
Net Change
+1528
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10112
5K → 10K1339*9+1330#10112#8782
10K → 15K45615+441#8782#8341
15K → 20K168167+1#8341#8340
20K → Half969-60#8340#8400
Half → 25K77330-253#8400#8653
25K → 30K298117+181#8653#8472
30K → 20M10197+4#8472#8468
20M → 21M11966+53#8468#8415
21M → 35K9816+82#8415#8333
35K → 23M15075+75#8333#8258
23M → 24M60119-59#8258#8317
24M → 40K6397-34#8317#8351
40K → 25.2M2870-42#8351#8393
25.2M → Finish19210-191#8393#8584
TOTALS2985*1457+1528

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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