San Francisco Marathon logo
SF MARATHON 1ST HALF 2026

Michael Stellfox

Lansing, IL

Bib: 13240 M 34

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 6575
Top 17%
Gender (Male)
#0 / 3619
Top 25%
Division (M30-34)
#0 / 772
Top 26%
Race Day Weather
59°/49°F
scattered clouds

⏱️ Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
10 ft elev
2M
9:18/mi
18:36
→ flat
12 ft elev
4M
9:25/mi
37:25
↑ 67↓ 69
10 ft elev
6M
9:07/mi
55:40
↑ 1231.1%
126 ft elev
8M
10:01/mi
1:15:43
↑ 166↓ 531.1%
246 ft elev
9.6M
6:44/mi
1:26:29
↑ 68↓ 1931.5%
126 ft elev
10M
15:19/mi
1:32:36
↓ 241.1%
90 ft elev
10.5M
4:12/mi
1:34:42
↓ 732.7%
18 ft elev
12M
10:38/mi
1:50:39
↑ 2803.2%
272 ft elev
Finish· 13.11 mi
7:50/mi
1:59:20
↑ 14↓ 891.3%
205 ft elev
Course Elevation
10–277 ft
≈
×22story building
•▲ 774 ft climb · ▼ 557 ft descent

The Course

Is this your race?

Claim it for a free AI report

A coach's-eye read of your race — emailed to you, free.

Half Splits

1st Half· via 6MFaster
Distance6.00 mi
Time55:40
Pace9:17 /mi
2nd Half
Distance7.11 mi
Time1:03:40
Pace8:57 /mi
📊Positive Split: 14.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
2M
2.00 mi06:59:1718:369:1818:36
9:18
-
4M
4.00 mi07:18:0637:259:2118:49
9:25
+0:07
6M
6.00 mi07:36:2155:409:1718:15
9:07
-0:18
8M
8.00 mi07:56:241:15:439:2820:03
10:01
+0:54
9.6M
9.60 mi08:07:101:26:299:0110:46
6:44
-3:17
10M
10.00 mi08:13:171:32:369:166:07
15:19
+8:35
10.5M
10.50 mi08:15:231:34:429:012:06
4:12
-11:07
12M
12.00 mi08:31:201:50:399:1315:57
10:38
+6:26
Finish
13.11 mi08:40:011:59:209:068:41
7:50
-2:48

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

4:12 /mi

Average Pace

9:06 /mi

Slowest Pace

15:19 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

21:33

18% of race

Time at Steady Pace

1:31:40

77% of race

Time at Slower Pace

6:07

5% of race

Average Pace: 9:06 /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...
0mi3.3mi6.6mi9.8mi13.1mi
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
2M
2.00 mi06:59:1718:369:1818:36
9:18
#1935
4M
4.00 mi07:18:0637:259:2118:49
9:25
#1952
6M
6.00 mi07:36:2155:409:1718:15
9:07
#1812
8M
8.00 mi07:56:241:15:439:2820:03
10:01
#1948
9.6M
9.60 mi08:07:101:26:299:0110:46
6:44
#1564
10M
10.00 mi08:13:171:32:369:166:07
15:19
#1505
10.5M
10.50 mi08:15:231:34:429:012:06
4:12
#1496
12M
12.00 mi08:31:201:50:399:1315:57
10:38
#1219
Finish
13.11 mi08:40:011:59:209:068:41
7:50
#1111
Faster pace
Steady pace
Slower pace
Featured Segment

Garmin Challenge

Top 13%
Garmin Challenge
Course map with the garmin challenge highlighted
Garmin Challenge · 9.6–10.5 mi · © Mapbox © OpenStreetMap

8:13

Segment Time

9:08/mi

Pace

0.90 mi

Distance

Overall

853

Men

688

Division

155

See the full Garmin Challenge leaderboard

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM30-34Seg. OverallSeg. MalesSeg. M30-34
2M2.00 mi2.00 mi19351424315455(Top 7%)371(Top 10%)77(Top 10%)
4M4.00 mi2.00 mi1952-171445-21316-11998(Top 30%)1473(Top 41%)316(Top 41%)
6M6.00 mi2.00 mi1812+1401358+87297+191580(Top 24%)1208(Top 33%)269(Top 35%)
8M8.00 mi2.00 mi1948-1361453-95319-222409(Top 37%)1743(Top 48%)372(Top 48%)
9.6M9.60 mi1.60 mi1564+3841206+247270+49491(Top 7%)374(Top 10%)92(Top 12%)
10M10.00 mi0.40 mi1505+591166+40261+9862(Top 13%)674(Top 19%)149(Top 19%)
10.5M10.50 mi0.50 mi1496+91160+62611037(Top 16%)822(Top 23%)186(Top 24%)
12M12.00 mi1.50 mi1219+277965+195207+54455(Top 7%)371(Top 10%)77(Top 10%)
Finish13.11 mi1.11 mi1111+108893+72198+9473(Top 7%)397(Top 11%)88(Top 11%)

Segment Performance Analysis

10.5M→12M

0.0 - 2.0 mi

Top 7%
~flat
+5ft-3ft

Overall

455

Males

371

M30-34

78

2M→4M

2.0 - 4.0 mi

Top 30%
×4story building
+67ft-69ft

Overall

1998

Males

1473

M30-34

318

4M→6M

4.0 - 6.0 mi

Top 24%
×9story building
+123ft-9ft

Overall

1580

Males

1208

M30-34

270

6M→8M

6.0 - 8.0 mi

Top 37%
×12story building
+166ft-53ft

Overall

2409

Males

1743

M30-34

373

8M→9.6M

8.0 - 9.6 mi

Top 7%
×13story building
+68ft-193ft

Overall

491

Males

374

M30-34

93

9.6M→10M

9.6 - 10.0 mi

Top 13%
×2story building
+0ft-24ft

Overall

862

Males

674

M30-34

150

10M→10.5M

10.0 - 10.5 mi

Top 16%
×6story building
+1ft-73ft

Overall

1037

Males

822

M30-34

187

10.5M→12M

10.5 - 12.0 mi

Top 7%
×21story building
+280ft-26ft

Overall

455

Males

371

M30-34

78

12M→Finish

12.0 - 13.1 mi

Top 7%
×7story building
+14ft-89ft

Overall

473

Males

397

M30-34

88

Passing Analysis

Category:
Athletes Passed
1179*
Passed By
355
Net Change
+824
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 2M----#1935
2M → 4M92109-17#1935#1952
4M → 6M15919+140#1952#1812
6M → 8M70*206-136#1812#1948
8M → 9.6M3884+384#1948#1564
9.6M → 10M645+59#1564#1505
10M → 10.5M101+9#1505#1496
10.5M → 12M28811+277#1496#1219
12M → Finish108*0+108#1219#1111
TOTALS1179*355+824

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

📊

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

Official Timing Data

The San Francisco Marathon

The San Francisco Marathon

Race Place Events

Race Place Events